Geochemical major-oxide, minor-oxide, trace-element, and rare-earth-element data from rocks and streams sediments collected in 2012 in the Ray Mountains area, Beaver, Bettles, Livengood, and Tanana quadrangles, Alaska

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Frequently anticipated questions:


What does this data set describe?

Title:
Geochemical major-oxide, minor-oxide, trace-element, and rare-earth-element data from rocks and streams sediments collected in 2012 in the Ray Mountains area, Beaver, Bettles, Livengood, and Tanana quadrangles, Alaska
Abstract:
Mineral-resources personnel from the Alaska Division of Geological & Geophysical Surveys (DGGS) carried out a helicopter-supported geological and geochemical resource assessment project in the Beaver, Bettles, Livengood, and Tanana quadrangles from June 23 through August 5, 2012. The objectives of DGGS's resource assessment are to improve the trace-element geochemical coverage of selected watersheds; to obtain modern, quantitative geochemical analyses; to understand the petrogenesis of the granites; and to better document established mineral occurrences. Stream-sediment, pan-concentrate, and rock sampling were conducted as part of the State's Rare Earth Elements and Strategic Minerals Assessment project, which is designed to evaluate Alaska's potential for these resources. Highlights of this sampling project include documenting patterns of variable REE enrichment in the granites, and identifying bedrock samples of greisen and oxidized breccias with enriched REE, and stream sediments with enriched REEs that have a pattern of variation that mimics that of the granites.
Supplemental_Information:
This data distribution package consists of multiple CSV files which provide sample locations and descriptions, geochemical data, analytical methods, and instrumentation detection limits for analysis of the samples collected for this project. For each analytical data type, a primary table presents the analytical results, sample locations, and other information about each sample. A secondary table provides detailed information about the methods and detection limits of the instrumentation used to analyze the data. The DGGS metadata standard extends the FGDC standard to include elements that are required to facilitate our internal data management. These elements, referred to as "layers," group and describe files that have intrinsic logical or topological relationships. Attribute information for each layer is included in this metadata file under the "Entity_and_Attribute_Information" section. The metadata layer provides the metadata, codesets, or other documentation files applicable to all layers. The data layer(s) are titled: >pan-con-trace-element-ree: trace-element and rare-earth-element analysis of pan-concentrate samples >rock-major-minor-oxide-trace-element-ree: major- and minor-oxide, trace-element, and rare-earth-element analysis of pulverized rock samples >rock-trace-element-ree: trace-element and rare-earth-element analysis of pulverized rock samples >slab-xrf-major-minor-oxide-trace-element: major- and minor-oxide and trace-element analysis of rock-slab samples >stream-sed-trace-element-ree: trace-element and rare-earth-element analysis of stream-sediment and soil samples >sample-location-details-no-suitable-media: list of visited locations in which samples were not collected for reasons noted
  1. How should this data set be cited?

    Bachmann, E.N., Blessington, M.J., Freeman, L.K., Newberry, R.J., Tuzzolino, A.L., Wright, T.C., and Wylie, William, 2013, Geochemical major-oxide, minor-oxide, trace-element, and rare-earth-element data from rocks and streams sediments collected in 2012 in the Ray Mountains area, Beaver, Bettles, Livengood, and Tanana quadrangles, Alaska: Raw Data File RDF 2013-5, Alaska Division of Geological & Geophysical Surveys, Fairbanks, Alaska, United States.

    Online Links:

    Other_Citation_Details: 4 p.

  2. What geographic area does the data set cover?

    West_Bounding_Coordinate: -151.717019
    East_Bounding_Coordinate: -149.756801
    North_Bounding_Coordinate: 66.79450811
    South_Bounding_Coordinate: 65.627367

  3. What does it look like?

  4. Does the data set describe conditions during a particular time period?

    Calendar_Date: 2012
    Currentness_Reference: ground condition

  5. What is the general form of this data set?

    Geospatial_Data_Presentation_Form: ASCII tabular files, report

  6. How does the data set represent geographic features?

    1. How are geographic features stored in the data set?

      This is a point data set.

    2. What coordinate system is used to represent geographic features?

      The horizontal datum used is North American Datum of 1927.
      The ellipsoid used is North American Datum of 1927.
      The semi-major axis of the ellipsoid used is 6378206.4.
      The flattening of the ellipsoid used is 1/294.9786982.

  7. How does the data set describe geographic features?

    rdf2013-5-pan-con-trace-element-ree.csv, rdf2013-5-pan-con-trace-element-ree-limits.csv
    Trace-element and rare-earth-element analysis of pan-concentrate samples. (Source: Alaska Division of Geological & Geophysical Surveys)

    Station
    Label assigned to identify the field location where a sample was collected. For this project a unique station value was created for all visited sites that yielded samples. However, the "Station" identifier does not uniquely identify each sample; in some cases, multiple samples were collected from the same site for different purposes. In other cases, a station number may be duplicated because the lab provided multiple analyses for a particular sample. (Source: Alaska Division of Geological & Geophysical Surveys)

    Generic example of a station identifier: 20YYAAA9999X: YY=last two digits of year, AAA=geologist's initials (one to three characters), 9999=unique station number, X= optional alpha character which indicates that multiple samples were collected at a given location or that multiple observations were recorded in the project database. The initials used by the geologists who collected samples for this project are: AT = Amy L. Tuzzolino; BW = William (aka Bill) Wylie; LF = Larry Freeman; RN = Rainer Newberry; MJB = Michael J. Blessington; MBW = Melanie B. Werdon; CW = T. Colby Wright; and EB = Erik N. Bachmann.

    Latitude
    Latitude, NAD27 (Source: Alaska Division of Geological & Geophysical Surveys)

    Range of values
    Minimum:65.63976624
    Maximum:66.79450811
    Units:decimal degrees

    Longitude
    Longitude, NAD27 (Source: Alaska Division of Geological & Geophysical Surveys)

    Range of values
    Minimum:-151.7149775
    Maximum:-149.9250977
    Units:decimal degrees

    Weight_g
    Sample weight in grams (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex)

    Range of values
    Minimum:4
    Maximum:90
    Units:grams

    Stream_W
    The estimated average width of stream at the sample site. (Source: Alaska Division of Geological & Geophysical Surveys)

    ValueDefinition
    NULLBlank (NULL) field values indicate that this data was not recorded by the sample collector.

    Range of values
    Minimum:0.2
    Maximum:60
    Units:meters

    Stream_D
    The estimated depth of stream at the sample site. (Source: Alaska Division of Geological & Geophysical Surveys)

    ValueDefinition
    NULLBlank (NULL) field values indicate that this data was not recorded by the sample collector.

    Range of values
    Minimum:0.1
    Maximum:105
    Units:meters

    Stream_Spd
    Qualitative description of the stream flow rate and stream channel morphology at the field station where the sample was collected.. (Source: Alaska Division of Geological & Geophysical Surveys)

    ValueDefinition
    NULLBlank (NULL) field values indicate that this data was not recorded by the sample collector.
    stagnantno apparent current, bed is composed of organics, silt or sand, and banks are composed of silt and organics, no gravel is present.
    slowslow current, few riffles, bed and banks are composed of gravel and sand, minor cobbles and silt, organics may be present.
    swiftfast moving water, many riffles, bed and bank are composed of cobbles and gravel with minor sand.
    tumblingstep-wise flows with plunges and pools, bed and banks are composed of boulders and cobbles with minor gravel and finer sediment.
    slow-stagnantvery slow current with stagnant pools, bed is comprised of sand and banks are composed of silt; organics and a small amount of gravel may be present.
    swift-slowvaried flow rate and channel morphology, bed and banks are composed of gravel and sand, banks are composed of sand, silt and minor gravel; cobbles and organics may be present.
    tumbling-swift-slowvaried flow rate and channel morphology with intermittent step-wise plunges and pools, bed and banks are variable and may be composed of boulders, cobbles, gravel, sand, or silt organics may be present.
    tumbling-slowslow current with few riffles and intermittent step-wise plunges and pools, bed and banks are variable and may be composed of cobbles, gravel, sand, or silt, organics may be present.
    tumbling-swiftfast moving water with many riffles and intermittent step-wise flows with plunges and pools, bed and banks are composed of boulders and cobbles with minor gravel and finer sediment.

    Stream_Ord
    Relative magnitude of the stream based on its position within the tributary hierarchy of the drainage basin.. (Source: Alaska Division of Geological & Geophysical Surveys)

    ValueDefinition
    NULLBlank (NULL) field values indicate that this data was not recorded by the sample collector.

    Formal codeset
    Codeset Name:Numeric values were assigned according to Strahler, A. N. (1957) classification system.
    Codeset Source:Strahler, A. N. (1957), Quantitative analysis of watershed geomorphology: Transactions of the American Geophysical Union Vol 38, p. 913-920.

    Stream_Sit
    The type of material that forms the bed and banks of the sampled stream channel.. (Source: Alaska Division of Geological & Geophysical Surveys)

    ValueDefinition
    NULLBlank (NULL) field values indicate that this data was not recorded by the sample collector.
    alluviumNatural unconsolidated aggregate deposited by rivers, streams and creeks.
    colluviumNatural unconsolidated aggregate resulting from down slope movement of loose rocks and soil.
    bedrockSolid in situ rock and boulders that have not been transported.

    Grain_Size
    Estimated classification of the size of material that is the source of the sample. (Source: Alaska Division of Geological & Geophysical Surveys)

    ValueDefinition
    NULLBlank (NULL) field values indicate that this data was not recorded by the sample collector.

    Formal codeset
    Codeset Name:Unified Soil Classification System (USCS)
    Codeset Source:United States Army Engineer Waterways Experiment Station (1960), The Unified Soil Classification System: Technical Memorandum No. 3-357, U.S. Army Engineer Waterways Experiment Station, Vicksburg, MS.

    Source
    Description of depositional environment of the specific sample site. (Source: Alaska Division of Geological & Geophysical Surveys)

    ValueDefinition
    NULLBlank (NULL) field values indicate that this data was not recorded by the sample collector.
    point-barGravel or sand deposited at the downstream end of a gravel bar.
    boulder/log-eddyGravel or sand deposited downstream of an obstruction such as a log or boulder.
    gravel-armorSediment trapped below pebble or cobble pavement at the leading edge of a gravel bar.
    moss-matSand or gravel trapped in a moss mat in the main channel or bank of a creek.
    plunge-poolSand or gravel deposited at the edge of a pool below a water fall.

    Num_Sites
    Number of sample sites at the station. (Source: Alaska Division of Geological & Geophysical Surveys)

    ValueDefinition
    NULLBlank (NULL) field values indicate that this data was not recorded by the sample collector.

    Range of values
    Minimum:1
    Maximum:6

    Dist_Samp
    The distance between the creek bed and the sample site. (Source: Alaska Division of Geological & Geophysical Surveys)

    ValueDefinition
    NULLBlank (NULL) field values indicate that this data was not recorded by the sample collector.

    Range of values
    Minimum:0.5
    Maximum:20
    Units:meters

    Sed_Colors
    Primary and, if applicable, secondary color of chemical or biogenic precipitate on the stream bed material qualitatively assigned by the sampler, no color palate or guide is used.. (Source: Alaska Division of Geological & Geophysical Surveys)

    ValueDefinition
    NULLBlank (NULL) field values indicate that this data was not recorded by the sample collector.

    The color selection values used in this table are: "black"; "black, brown"; "black, orange"; "brown"; "brown, black"; "brown, orange"; "brown, white"; "orange"; "orange, brown"; "orange, red"; "white";

    Intensity
    Intensity of the chemical or biogenic precipitate on the stream bed material qualitatively assigned by the sampler. (Source: Alaska Division of Geological & Geophysical Surveys)

    ValueDefinition
    NULLBlank (NULL) field values indicate that this data was not recorded by the sample collector.
    weakPrecipitate binds otherwise unconsolidated deposits.
    heavyObscures the texture and color of the stream bed materials.
    moderateObscures the color of the stream bed materials.

    Description
    Description of the sample. (Source: Alaska Division of Geological & Geophysical Surveys)

    ValueDefinition
    NULLBlank (NULL) field values indicate that this data was not recorded by the sample collector.

    Characters 1 to 254 of a brief sample and/or station description.

    Descrip_2
    Extension of the sample and/or station description for descriptions which are greater than 254 characters in length. (Source: Alaska Division of Geological & Geophysical Surveys)

    ValueDefinition
    NULLBlank (NULL) field values indicate that this data was not recorded by the sample collector.

    Characters greater than 255 of the sample and/or station description.

    Ba_ppm_1
    Barium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Mass Spectroscopy (ICP-MS), Lithium metaborate fusion - HNO3-HCl dissolution; Lower detection limit = 0.5 ppm; Upper detection limit = 10000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex.)

    ValueDefinition
    NULLBlank (NULL) field values indicate that this chemical species was not requested or not analyzed.

    Range of values
    Minimum:76.7
    Maximum:4930
    Units:parts per million

    Ce_ppm_1
    Cerium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Mass Spectroscopy (ICP-MS), Lithium metaborate fusion - HNO3-HCl dissolution; Lower detection limit = 0.5 ppm; Upper detection limit = 10000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex.)

    ValueDefinition
    -2Above detection limit.
    NULLBlank (NULL) field values indicate that this chemical species was not requested or not analyzed.

    Range of values
    Minimum:24.8
    Maximum:8440
    Units:parts per million

    Ce_ppm_2
    Cerium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Mass Spectroscopy (ICP-MS), Lithium metaborate fusion - HNO3-HCl dissolution; Lower detection limit = 3 ppm; Upper detection limit = 50000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. High sample to volume ratios were utilized to improve precision. Certified high grade rare earth reference materials are used as part of the standard protocol. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex.)

    ValueDefinition
    NULLBlank (NULL) field values indicate that this chemical species was not requested or not analyzed.

    Range of values
    Minimum:20800
    Maximum:20800
    Units:parts per million

    Cr_ppm_1
    Chromium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Mass Spectroscopy (ICP-MS), Lithium metaborate fusion - HNO3-HCl dissolution; Lower detection limit = 10 ppm; Upper detection limit = 10000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex.)

    ValueDefinition
    -2Above detection limit.
    NULLBlank (NULL) field values indicate that this chemical species was not requested or not analyzed.

    Range of values
    Minimum:10
    Maximum:7400
    Units:parts per million

    Cs_ppm
    Cesium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Mass Spectroscopy (ICP-MS), Lithium metaborate fusion - HNO3-HCl dissolution; Lower detection limit = 0.01 ppm; Upper detection limit = 10000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex.)

    ValueDefinition
    NULLBlank (NULL) field values indicate that this chemical species was not requested or not analyzed.

    Range of values
    Minimum:0.92
    Maximum:72.8
    Units:parts per million

    Dy_ppm_1
    Dysprosium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Mass Spectroscopy (ICP-MS), Lithium metaborate fusion - HNO3-HCl dissolution; Lower detection limit = 0.05 ppm; Upper detection limit = 1000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex.)

    ValueDefinition
    -2Above detection limit.
    NULLBlank (NULL) field values indicate that this chemical species was not requested or not analyzed.

    Range of values
    Minimum:1.84
    Maximum:417
    Units:parts per million

    Dy_ppm_2
    Dysprosium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Mass Spectroscopy (ICP-MS), Lithium metaborate fusion - HNO3-HCl dissolution; Lower detection limit = 0.3 ppm; Upper detection limit = 5000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. High sample to volume ratios were utilized to improve precision. Certified high grade rare earth reference materials are used as part of the standard protocol. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex.)

    ValueDefinition
    NULLBlank (NULL) field values indicate that this chemical species was not requested or not analyzed.

    Range of values
    Minimum:1150
    Maximum:1150
    Units:parts per million

    Er_ppm_1
    Erbium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Mass Spectroscopy (ICP-MS), Lithium metaborate fusion - HNO3-HCl dissolution; Lower detection limit = 0.03 ppm; Upper detection limit = 1000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex.)

    ValueDefinition
    NULLBlank (NULL) field values indicate that this chemical species was not requested or not analyzed.

    Range of values
    Minimum:1.14
    Maximum:684
    Units:parts per million

    Er_ppm_2
    Erbium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Mass Spectroscopy (ICP-MS), Lithium metaborate fusion - HNO3-HCl dissolution; Lower detection limit = 0.2 ppm; Upper detection limit = 5000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. High sample to volume ratios were utilized to improve precision. Certified high grade rare earth reference materials are used as part of the standard protocol. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex.)

    ValueDefinition
    NULLBlank (NULL) field values indicate that this chemical species was not requested or not analyzed.

    Range of values
    Minimum:716
    Maximum:716
    Units:parts per million

    Eu_ppm_1
    Europium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Mass Spectroscopy (ICP-MS), Lithium metaborate fusion - HNO3-HCl dissolution; Lower detection limit = 0.03 ppm; Upper detection limit = 1000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex.)

    ValueDefinition
    NULLBlank (NULL) field values indicate that this chemical species was not requested or not analyzed.

    Range of values
    Minimum:0.19
    Maximum:19.3
    Units:parts per million

    Eu_ppm_2
    Europium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Mass Spectroscopy (ICP-MS), Lithium metaborate fusion - HNO3-HCl dissolution; Lower detection limit = 0.2 ppm; Upper detection limit = 5000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. High sample to volume ratios were utilized to improve precision. Certified high grade rare earth reference materials are used as part of the standard protocol. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex.)

    ValueDefinition
    NULLBlank (NULL) field values indicate that this chemical species was not requested or not analyzed.

    Range of values
    Minimum:10.7
    Maximum:10.7
    Units:parts per million

    Ga_ppm_1
    Gallium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Mass Spectroscopy (ICP-MS), Lithium metaborate fusion - HNO3-HCl dissolution; Lower detection limit = 1 ppm; Upper detection limit = 1000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex.)

    ValueDefinition
    NULLBlank (NULL) field values indicate that this chemical species was not requested or not analyzed.

    Range of values
    Minimum:4.8
    Maximum:87.8
    Units:parts per million

    Gd_ppm_1
    Gadolinium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Mass Spectroscopy (ICP-MS), Lithium metaborate fusion - HNO3-HCl dissolution; Lower detection limit = 0.05 ppm; Upper detection limit = 1000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex.)

    ValueDefinition
    NULLBlank (NULL) field values indicate that this chemical species was not requested or not analyzed.

    Range of values
    Minimum:1.83
    Maximum:932
    Units:parts per million

    Gd_ppm_2
    Gadolinium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Mass Spectroscopy (ICP-MS), Lithium metaborate fusion - HNO3-HCl dissolution; Lower detection limit = 0.3 ppm; Upper detection limit = 5000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. High sample to volume ratios were utilized to improve precision. Certified high grade rare earth reference materials are used as part of the standard protocol. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex.)

    ValueDefinition
    NULLBlank (NULL) field values indicate that this chemical species was not requested or not analyzed.

    Range of values
    Minimum:1080
    Maximum:1080
    Units:parts per million

    Hf_ppm_1
    Hafnium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Mass Spectroscopy (ICP-MS), Lithium metaborate fusion - HNO3-HCl dissolution; Lower detection limit = 0.2 ppm; Upper detection limit = 10000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex.)

    ValueDefinition
    NULLBlank (NULL) field values indicate that this chemical species was not requested or not analyzed.

    Range of values
    Minimum:2.6
    Maximum:300
    Units:parts per million

    Hf_ppm_2
    Hafnium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Mass Spectroscopy (ICP-MS), Lithium metaborate fusion - HNO3-HCl dissolution; Lower detection limit = 1 ppm; Upper detection limit = 50000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. High sample to volume ratios were utilized to improve precision. Certified high grade rare earth reference materials are used as part of the standard protocol. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex.)

    ValueDefinition
    NULLBlank (NULL) field values indicate that this chemical species was not requested or not analyzed.

    Range of values
    Minimum:843
    Maximum:843
    Units:parts per million

    Ho_ppm_1
    Holmium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Mass Spectroscopy (ICP-MS), Lithium metaborate fusion - HNO3-HCl dissolution; Lower detection limit = 0.01 ppm; Upper detection limit = 1000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex.)

    ValueDefinition
    NULLBlank (NULL) field values indicate that this chemical species was not requested or not analyzed.

    Range of values
    Minimum:0.39
    Maximum:214
    Units:parts per million

    Ho_ppm_2
    Holmium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Mass Spectroscopy (ICP-MS), Lithium metaborate fusion - HNO3-HCl dissolution; Lower detection limit = 0.05 ppm; Upper detection limit = 5000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. High sample to volume ratios were utilized to improve precision. Certified high grade rare earth reference materials are used as part of the standard protocol. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex.)

    ValueDefinition
    NULLBlank (NULL) field values indicate that this chemical species was not requested or not analyzed.

    Range of values
    Minimum:248
    Maximum:248
    Units:parts per million

    La_ppm_1
    Lanthanum values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Mass Spectroscopy (ICP-MS), Lithium metaborate fusion - HNO3-HCl dissolution; Lower detection limit = 0.5 ppm; Upper detection limit = 10000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex.)

    ValueDefinition
    NULLBlank (NULL) field values indicate that this chemical species was not requested or not analyzed.

    Range of values
    Minimum:14.6
    Maximum:9870
    Units:parts per million

    La_ppm_2
    Lanthanum values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Mass Spectroscopy (ICP-MS), Lithium metaborate fusion - HNO3-HCl dissolution; Lower detection limit = 3 ppm; Upper detection limit = 50000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. High sample to volume ratios were utilized to improve precision. Certified high grade rare earth reference materials are used as part of the standard protocol. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex.)

    ValueDefinition
    NULLBlank (NULL) field values indicate that this chemical species was not requested or not analyzed.

    Range of values
    Minimum:10050
    Maximum:10050
    Units:parts per million

    Lu_ppm_1
    Lutetium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Mass Spectroscopy (ICP-MS), Lithium metaborate fusion - HNO3-HCl dissolution; Lower detection limit = 0.01 ppm; Upper detection limit = 1000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex.)

    ValueDefinition
    NULLBlank (NULL) field values indicate that this chemical species was not requested or not analyzed.

    Range of values
    Minimum:0.18
    Maximum:99.4
    Units:parts per million

    Lu_ppm_2
    Lutetium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Mass Spectroscopy (ICP-MS), Lithium metaborate fusion - HNO3-HCl dissolution; Lower detection limit = 0.05 ppm; Upper detection limit = 5000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. High sample to volume ratios were utilized to improve precision. Certified high grade rare earth reference materials are used as part of the standard protocol. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex.)

    ValueDefinition
    NULLBlank (NULL) field values indicate that this chemical species was not requested or not analyzed.

    Range of values
    Minimum:113
    Maximum:113
    Units:parts per million

    Nb_ppm_1
    Niobium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Mass Spectroscopy (ICP-MS), Lithium metaborate fusion - HNO3-HCl dissolution; Lower detection limit = 0.2 ppm; Upper detection limit = 2500 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex.)

    ValueDefinition
    NULLBlank (NULL) field values indicate that this chemical species was not requested or not analyzed.

    Range of values
    Minimum:5.6
    Maximum:965
    Units:parts per million

    Nb_ppm_2
    Niobium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Mass Spectroscopy (ICP-MS), Lithium metaborate fusion - HNO3-HCl dissolution; Lower detection limit = 1 ppm; Upper detection limit = 5000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. High sample to volume ratios were utilized to improve precision. Certified high grade rare earth reference materials are used as part of the standard protocol. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex.)

    ValueDefinition
    NULLBlank (NULL) field values indicate that this chemical species was not requested or not analyzed.

    Range of values
    Minimum:1250
    Maximum:1250
    Units:parts per million

    Nd_ppm_1
    Neodymium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Mass Spectroscopy (ICP-MS), Lithium metaborate fusion - HNO3-HCl dissolution; Lower detection limit = 0.1 ppm; Upper detection limit = 10000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex.)

    ValueDefinition
    NULLBlank (NULL) field values indicate that this chemical species was not requested or not analyzed.

    Range of values
    Minimum:11.5
    Maximum:7180
    Units:parts per million

    Nd_ppm_2
    Neodymium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Mass Spectroscopy (ICP-MS), Lithium metaborate fusion - HNO3-HCl dissolution; Lower detection limit = 0.5 ppm; Upper detection limit = 50000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. High sample to volume ratios were utilized to improve precision. Certified high grade rare earth reference materials are used as part of the standard protocol. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex.)

    ValueDefinition
    NULLBlank (NULL) field values indicate that this chemical species was not requested or not analyzed.

    Range of values
    Minimum:7420
    Maximum:7420
    Units:parts per million

    Pr_ppm_1
    Praseodymium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Mass Spectroscopy (ICP-MS), Lithium metaborate fusion - HNO3-HCl dissolution; Lower detection limit = 0.03 ppm; Upper detection limit = 1000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex.)

    ValueDefinition
    -2Above detection limit.
    NULLBlank (NULL) field values indicate that this chemical species was not requested or not analyzed.

    Range of values
    Minimum:3.16
    Maximum:954
    Units:parts per million

    Pr_ppm_2
    Praseodymium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Mass Spectroscopy (ICP-MS), Lithium metaborate fusion - HNO3-HCl dissolution; Lower detection limit = 0.2 ppm; Upper detection limit = 5000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. High sample to volume ratios were utilized to improve precision. Certified high grade rare earth reference materials are used as part of the standard protocol. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex.)

    ValueDefinition
    NULLBlank (NULL) field values indicate that this chemical species was not requested or not analyzed.

    Range of values
    Minimum:2220
    Maximum:2220
    Units:parts per million

    Rb_ppm_1
    Rubidium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Mass Spectroscopy (ICP-MS), Lithium metaborate fusion - HNO3-HCl dissolution; Lower detection limit = 0.2 ppm; Upper detection limit = 10000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex.)

    ValueDefinition
    NULLBlank (NULL) field values indicate that this chemical species was not requested or not analyzed.

    Range of values
    Minimum:25.7
    Maximum:612
    Units:parts per million

    Rb_ppm_2
    Rubidium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Mass Spectroscopy (ICP-MS), Lithium metaborate fusion - HNO3-HCl dissolution; Lower detection limit = 1 ppm; Upper detection limit = 50000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. High sample to volume ratios were utilized to improve precision. Certified high grade rare earth reference materials are used as part of the standard protocol. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex.)

    ValueDefinition
    NULLBlank (NULL) field values indicate that this chemical species was not requested or not analyzed.

    Range of values
    Minimum:65
    Maximum:65
    Units:parts per million

    Sm_ppm_1
    Samarium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Mass Spectroscopy (ICP-MS), Lithium metaborate fusion - HNO3-HCl dissolution; Lower detection limit = 0.03 ppm; Upper detection limit = 1000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex.)

    ValueDefinition
    -2Above detection limit.
    NULLBlank (NULL) field values indicate that this chemical species was not requested or not analyzed.

    Range of values
    Minimum:2.3
    Maximum:526
    Units:parts per million

    Sm_ppm_2
    Samarium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Mass Spectroscopy (ICP-MS), Lithium metaborate fusion - HNO3-HCl dissolution; Lower detection limit = 0.2 ppm; Upper detection limit = 5000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. High sample to volume ratios were utilized to improve precision. Certified high grade rare earth reference materials are used as part of the standard protocol. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex.)

    ValueDefinition
    NULLBlank (NULL) field values indicate that this chemical species was not requested or not analyzed.

    Range of values
    Minimum:1295
    Maximum:1295
    Units:parts per million

    Sn_ppm_1
    Tin values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Mass Spectroscopy (ICP-MS), Lithium metaborate fusion - HNO3-HCl dissolution; Lower detection limit = 1 ppm; Upper detection limit = 10000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex.)

    ValueDefinition
    -2Above detection limit.
    NULLBlank (NULL) field values indicate that this chemical species was not requested or not analyzed.

    Range of values
    Minimum:2
    Maximum:8600
    Units:parts per million

    Sn_ppm_2
    Tin values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Mass Spectroscopy (ICP-MS), Lithium metaborate fusion - HNO3-HCl dissolution; Lower detection limit = 5 ppm; Upper detection limit = 50000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. High sample to volume ratios were utilized to improve precision. Certified high grade rare earth reference materials are used as part of the standard protocol. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex.)

    ValueDefinition
    NULLBlank (NULL) field values indicate that this chemical species was not requested or not analyzed.

    Range of values
    Minimum:6740
    Maximum:6740
    Units:parts per million

    Sr_ppm_1
    Strontium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Mass Spectroscopy (ICP-MS), Lithium metaborate fusion - HNO3-HCl dissolution; Lower detection limit = 0.1 ppm; Upper detection limit = 10000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex.)

    ValueDefinition
    NULLBlank (NULL) field values indicate that this chemical species was not requested or not analyzed.

    Range of values
    Minimum:7.9
    Maximum:681
    Units:parts per million

    Ta_ppm_1
    Tantalum values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Mass Spectroscopy (ICP-MS), Lithium metaborate fusion - HNO3-HCl dissolution; Lower detection limit = 0.1 ppm; Upper detection limit = 2500 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex.)

    ValueDefinition
    NULLBlank (NULL) field values indicate that this chemical species was not requested or not analyzed.

    Range of values
    Minimum:0.6
    Maximum:235
    Units:parts per million

    Ta_ppm_2
    Tantalum values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Mass Spectroscopy (ICP-MS), Lithium metaborate fusion - HNO3-HCl dissolution; Lower detection limit = 0.5 ppm; Upper detection limit = 5000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. High sample to volume ratios were utilized to improve precision. Certified high grade rare earth reference materials are used as part of the standard protocol. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex.)

    ValueDefinition
    NULLBlank (NULL) field values indicate that this chemical species was not requested or not analyzed.

    Range of values
    Minimum:185
    Maximum:185
    Units:parts per million

    Tb_ppm_1
    Terbium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Mass Spectroscopy (ICP-MS), Lithium metaborate fusion - HNO3-HCl dissolution; Lower detection limit = 0.01 ppm; Upper detection limit = 1000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex.)

    ValueDefinition
    NULLBlank (NULL) field values indicate that this chemical species was not requested or not analyzed.

    Range of values
    Minimum:0.31
    Maximum:154.5
    Units:parts per million

    Tb_ppm_2
    Terbium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Mass Spectroscopy (ICP-MS), Lithium metaborate fusion - HNO3-HCl dissolution; Lower detection limit = 0.05 ppm; Upper detection limit = 5000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. High sample to volume ratios were utilized to improve precision. Certified high grade rare earth reference materials are used as part of the standard protocol. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex.)

    ValueDefinition
    NULLBlank (NULL) field values indicate that this chemical species was not requested or not analyzed.

    Range of values
    Minimum:178.5
    Maximum:178.5
    Units:parts per million

    Th_ppm_1
    Thorium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Mass Spectroscopy (ICP-MS), Lithium metaborate fusion - HNO3-HCl dissolution; Lower detection limit = 0.05 ppm; Upper detection limit = 1000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex.)

    ValueDefinition
    -2Above detection limit.
    NULLBlank (NULL) field values indicate that this chemical species was not requested or not analyzed.

    Range of values
    Minimum:6.29
    Maximum:902
    Units:parts per million

    Th_ppm_2
    Thorium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Mass Spectroscopy (ICP-MS), Lithium metaborate fusion - HNO3-HCl dissolution; Lower detection limit = 0.3 ppm; Upper detection limit = 5000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. High sample to volume ratios were utilized to improve precision. Certified high grade rare earth reference materials are used as part of the standard protocol. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex.)

    ValueDefinition
    -2Above detection limit.
    NULLBlank (NULL) field values indicate that this chemical species was not requested or not analyzed.

    Tl_ppm_1
    Thallium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Mass Spectroscopy (ICP-MS), Lithium metaborate fusion - HNO3-HCl dissolution; Lower detection limit = 0.5 ppm; Upper detection limit = 1000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex.)

    ValueDefinition
    -1Below detection limit.

    Range of values
    Minimum:0.5
    Maximum:3
    Units:parts per million

    Tm_ppm_1
    Thulium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Mass Spectroscopy (ICP-MS), Lithium metaborate fusion - HNO3-HCl dissolution; Lower detection limit = 0.01 ppm; Upper detection limit = 1000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex.)

    ValueDefinition
    NULLBlank (NULL) field values indicate that this chemical species was not requested or not analyzed.

    Range of values
    Minimum:0.19
    Maximum:108
    Units:parts per million

    Tm_ppm_2
    Thulium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Mass Spectroscopy (ICP-MS), Lithium metaborate fusion - HNO3-HCl dissolution; Lower detection limit = 0.05 ppm; Upper detection limit = 5000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. High sample to volume ratios were utilized to improve precision. Certified high grade rare earth reference materials are used as part of the standard protocol. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex.)

    ValueDefinition
    NULLBlank (NULL) field values indicate that this chemical species was not requested or not analyzed.

    Range of values
    Minimum:111.5
    Maximum:111.5
    Units:parts per million

    U_ppm_1
    Uranium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Mass Spectroscopy (ICP-MS), Lithium metaborate fusion - HNO3-HCl dissolution; Lower detection limit = 0.05 ppm; Upper detection limit = 1000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex.)

    ValueDefinition
    NULLBlank (NULL) field values indicate that this chemical species was not requested or not analyzed.

    Range of values
    Minimum:1.64
    Maximum:547
    Units:parts per million

    U_ppm_2
    Uranium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Mass Spectroscopy (ICP-MS), Lithium metaborate fusion - HNO3-HCl dissolution; Lower detection limit = 0.3 ppm; Upper detection limit = 5000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. High sample to volume ratios were utilized to improve precision. Certified high grade rare earth reference materials are used as part of the standard protocol. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex.)

    ValueDefinition
    NULLBlank (NULL) field values indicate that this chemical species was not requested or not analyzed.

    Range of values
    Minimum:619
    Maximum:619
    Units:parts per million

    V_ppm_1
    Vanadium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Mass Spectroscopy (ICP-MS), Lithium metaborate fusion - HNO3-HCl dissolution; Lower detection limit = 5 ppm; Upper detection limit = 10000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex.)

    ValueDefinition
    -1Below detection limit.

    Range of values
    Minimum:7
    Maximum:438
    Units:parts per million

    W_ppm_1
    Tungsten values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Mass Spectroscopy (ICP-MS), Lithium metaborate fusion - HNO3-HCl dissolution; Lower detection limit = 1 ppm; Upper detection limit = 10000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex.)

    ValueDefinition
    NULLBlank (NULL) field values indicate that this chemical species was not requested or not analyzed.

    Range of values
    Minimum:2
    Maximum:2900
    Units:parts per million

    W_ppm_2
    Tungsten values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Mass Spectroscopy (ICP-MS), Lithium metaborate fusion - HNO3-HCl dissolution; Lower detection limit = 5 ppm; Upper detection limit = 50000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. High sample to volume ratios were utilized to improve precision. Certified high grade rare earth reference materials are used as part of the standard protocol. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex.)

    ValueDefinition
    NULLBlank (NULL) field values indicate that this chemical species was not requested or not analyzed.

    Range of values
    Minimum:2620
    Maximum:2620
    Units:parts per million

    Y_ppm_1
    Yttrium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Mass Spectroscopy (ICP-MS), Lithium metaborate fusion - HNO3-HCl dissolution; Lower detection limit = 0.5 ppm; Upper detection limit = 10000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex.)

    ValueDefinition
    NULLBlank (NULL) field values indicate that this chemical species was not requested or not analyzed.

    Range of values
    Minimum:11.2
    Maximum:6660
    Units:parts per million

    Y_ppm_2
    Yttrium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Mass Spectroscopy (ICP-MS), Lithium metaborate fusion - HNO3-HCl dissolution; Lower detection limit = 3 ppm; Upper detection limit = 50000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. High sample to volume ratios were utilized to improve precision. Certified high grade rare earth reference materials are used as part of the standard protocol. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex.)

    ValueDefinition
    NULLBlank (NULL) field values indicate that this chemical species was not requested or not analyzed.

    Range of values
    Minimum:6780
    Maximum:6780
    Units:parts per million

    Yb_ppm_1
    Ytterbium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Mass Spectroscopy (ICP-MS), Lithium metaborate fusion - HNO3-HCl dissolution; Lower detection limit = 0.03 ppm; Upper detection limit = 1000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex.)

    ValueDefinition
    NULLBlank (NULL) field values indicate that this chemical species was not requested or not analyzed.

    Range of values
    Minimum:1.22
    Maximum:687
    Units:parts per million

    Yb_ppm_2
    Ytterbium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Mass Spectroscopy (ICP-MS), Lithium metaborate fusion - HNO3-HCl dissolution; Lower detection limit = 0.2 ppm; Upper detection limit = 5000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. High sample to volume ratios were utilized to improve precision. Certified high grade rare earth reference materials are used as part of the standard protocol. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex.)

    ValueDefinition
    NULLBlank (NULL) field values indicate that this chemical species was not requested or not analyzed.

    Range of values
    Minimum:748
    Maximum:748
    Units:parts per million

    Zr_ppm_1
    Zirconium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Mass Spectroscopy (ICP-MS), Lithium metaborate fusion - HNO3-HCl dissolution; Lower detection limit = 2 ppm; Upper detection limit = 10000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex.)

    ValueDefinition
    -2Above detection limit.
    NULLBlank (NULL) field values indicate that this chemical species was not requested or not analyzed.

    Range of values
    Minimum:84
    Maximum:7150
    Units:parts per million

    Zr_ppm_2
    Zirconium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Mass Spectroscopy (ICP-MS), Lithium metaborate fusion - HNO3-HCl dissolution; Lower detection limit = 10 ppm; Upper detection limit = 50000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. High sample to volume ratios were utilized to improve precision. Certified high grade rare earth reference materials are used as part of the standard protocol. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex.)

    ValueDefinition
    NULLBlank (NULL) field values indicate that this chemical species was not requested or not analyzed.

    Range of values
    Minimum:26700
    Maximum:26700
    Units:parts per million

    Au_ppm
    Gold values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy (ICP-AES), Fire assay - aqua regia; Lower detection limit = 0.001 ppm; Upper detection limit = 10 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex.)

    ValueDefinition
    -1Below detection limit.
    -4Insufficient sample.
    NULLBlank (NULL) field values indicate that this chemical species was not requested or not analyzed.

    Range of values
    Minimum:0.001
    Maximum:6.02
    Units:parts per million

    Pt_ppm
    Platinum values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy (ICP-AES), Fire assay - aqua regia; Lower detection limit = 0.005 ppm; Upper detection limit = 10 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex.)

    ValueDefinition
    -1Below detection limit.
    -4Insufficient sample.
    NULLBlank (NULL) field values indicate that this chemical species was not requested or not analyzed.

    Range of values
    Minimum:0.005
    Maximum:0.038
    Units:parts per million

    Pd_ppm
    Palladium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy (ICP-AES), Fire assay - aqua regia; Lower detection limit = 0.001 ppm; Upper detection limit = 10 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex.)

    ValueDefinition
    -1Below detection limit.
    -4Insufficient sample.
    NULLBlank (NULL) field values indicate that this chemical species was not requested or not analyzed.

    Range of values
    Minimum:0.001
    Maximum:0.006
    Units:parts per million

    Ag_ppm
    Silver values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy (ICP-AES), HF-HNO3-HClO4-HCl; Lower detection limit = 0.5 ppm; Upper detection limit = 100 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex.)

    ValueDefinition
    -1Below detection limit.

    Range of values
    Minimum:0.5
    Maximum:2.8
    Units:parts per million

    Al_pct
    Aluminum values measured in percent (pct); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy (ICP-AES), HF-HNO3-HClO4-HCl; Lower detection limit = 0.01 pct; Upper detection limit = 50 pct; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex.)

    ValueDefinition
    NULLBlank (NULL) field values indicate that this chemical species was not requested or not analyzed.

    Range of values
    Minimum:1.59
    Maximum:10.05
    Units:percent

    As_ppm
    Arsenic values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy (ICP-AES), HF-HNO3-HClO4-HCl; Lower detection limit = 5 ppm; Upper detection limit = 10000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex.)

    ValueDefinition
    -1Below detection limit.

    Range of values
    Minimum:5
    Maximum:134
    Units:parts per million

    Ba_ppm_2
    Barium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy (ICP-AES), HF-HNO3-HClO4-HCl; Lower detection limit = 10 ppm; Upper detection limit = 10000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex.)

    ValueDefinition
    NULLBlank (NULL) field values indicate that this chemical species was not requested or not analyzed.

    Range of values
    Minimum:80
    Maximum:4540
    Units:parts per million

    Be_ppm
    Beryllium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy (ICP-AES), HF-HNO3-HClO4-HCl; Lower detection limit = 0.5 ppm; Upper detection limit = 1000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex.)

    ValueDefinition
    NULLBlank (NULL) field values indicate that this chemical species was not requested or not analyzed.

    Range of values
    Minimum:0.8
    Maximum:195
    Units:parts per million

    Bi_ppm
    Bismuth values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy (ICP-AES), HF-HNO3-HClO4-HCl; Lower detection limit = 2 ppm; Upper detection limit = 10000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex.)

    ValueDefinition
    -1Below detection limit.

    Range of values
    Minimum:2
    Maximum:79
    Units:parts per million

    Ca_pct
    Calcium values measured in percent (pct); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy (ICP-AES), HF-HNO3-HClO4-HCl; Lower detection limit = 0.01 pct; Upper detection limit = 50 pct; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex.)

    ValueDefinition
    NULLBlank (NULL) field values indicate that this chemical species was not requested or not analyzed.

    Range of values
    Minimum:0.02
    Maximum:6.77
    Units:percent

    Cd_ppm
    Cadmium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy (ICP-AES), HF-HNO3-HClO4-HCl; Lower detection limit = 0.5 ppm; Upper detection limit = 1000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex.)

    ValueDefinition
    -1Below detection limit.

    Range of values
    Minimum:0.5
    Maximum:1.4
    Units:parts per million

    Co_ppm
    Cobalt values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy (ICP-AES), HF-HNO3-HClO4-HCl; Lower detection limit = 1 ppm; Upper detection limit = 10000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex.)

    ValueDefinition
    NULLBlank (NULL) field values indicate that this chemical species was not requested or not analyzed.

    Range of values
    Minimum:1
    Maximum:66
    Units:parts per million

    Cr_ppm_2
    Chromium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy (ICP-AES), HF-HNO3-HClO4-HCl; Lower detection limit = 1 ppm; Upper detection limit = 10000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex.)

    ValueDefinition
    -2Above detection limit.
    NULLBlank (NULL) field values indicate that this chemical species was not requested or not analyzed.

    Range of values
    Minimum:3
    Maximum:8710
    Units:parts per million

    Cu_ppm
    Copper values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy (ICP-AES), HF-HNO3-HClO4-HCl; Lower detection limit = 1 ppm; Upper detection limit = 10000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex.)

    ValueDefinition
    -1Below detection limit.

    Range of values
    Minimum:1
    Maximum:43
    Units:parts per million

    Fe_pct
    Iron values measured in percent (pct); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy (ICP-AES), HF-HNO3-HClO4-HCl; Lower detection limit = 0.01 pct; Upper detection limit = 50 pct; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex.)

    ValueDefinition
    NULLBlank (NULL) field values indicate that this chemical species was not requested or not analyzed.

    Range of values
    Minimum:0.67
    Maximum:18.6
    Units:percent

    Ga_ppm_2
    Gallium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy (ICP-AES), HF-HNO3-HClO4-HCl; Lower detection limit = 10 ppm; Upper detection limit = 10000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex.)

    ValueDefinition
    -1Below detection limit.

    Range of values
    Minimum:10
    Maximum:30
    Units:parts per million

    K_pct
    Potassium values measured in percent (pct); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy (ICP-AES), HF-HNO3-HClO4-HCl; Lower detection limit = 0.01 pct; Upper detection limit = 10 pct; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex.)

    ValueDefinition
    NULLBlank (NULL) field values indicate that this chemical species was not requested or not analyzed.

    Range of values
    Minimum:0.44
    Maximum:4.35
    Units:percent

    La_ppm_3
    Lanthanum values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy (ICP-AES), HF-HNO3-HClO4-HCl; Lower detection limit = 10 ppm; Upper detection limit = 10000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex.)

    ValueDefinition
    NULLBlank (NULL) field values indicate that this chemical species was not requested or not analyzed.

    Range of values
    Minimum:10
    Maximum:8120
    Units:parts per million

    Mg_pct
    Magnesium values measured in percent (pct); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy (ICP-AES), HF-HNO3-HClO4-HCl; Lower detection limit = 0.01 pct; Upper detection limit = 50 pct; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex.)

    ValueDefinition
    NULLBlank (NULL) field values indicate that this chemical species was not requested or not analyzed.

    Range of values
    Minimum:0.03
    Maximum:3.74
    Units:percent

    Mn_ppm
    Manganese values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy (ICP-AES), HF-HNO3-HClO4-HCl; Lower detection limit = 5 ppm; Upper detection limit = 100000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex.)

    ValueDefinition
    NULLBlank (NULL) field values indicate that this chemical species was not requested or not analyzed.

    Range of values
    Minimum:127
    Maximum:24800
    Units:parts per million

    Mo_ppm
    Molybdenum values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy (ICP-AES), HF-HNO3-HClO4-HCl; Lower detection limit = 1 ppm; Upper detection limit = 10000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex.)

    ValueDefinition
    -1Below detection limit.

    Range of values
    Minimum:1
    Maximum:23
    Units:parts per million

    Na_pct
    Sodium values measured in percent (pct); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy (ICP-AES), HF-HNO3-HClO4-HCl; Lower detection limit = 0.01 pct; Upper detection limit = 10 pct; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex.)

    ValueDefinition
    NULLBlank (NULL) field values indicate that this chemical species was not requested or not analyzed.

    Range of values
    Minimum:0.04
    Maximum:2.92
    Units:percent

    Ni_ppm
    Nickel values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy (ICP-AES), HF-HNO3-HClO4-HCl; Lower detection limit = 1 ppm; Upper detection limit = 10000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex.)

    ValueDefinition
    -1Below detection limit.

    Range of values
    Minimum:1
    Maximum:202
    Units:parts per million

    P_ppm
    Phosphorus values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy (ICP-AES), HF-HNO3-HClO4-HCl; Lower detection limit = 10 ppm; Upper detection limit = 10000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex.)

    ValueDefinition
    -2Above detection limit.
    NULLBlank (NULL) field values indicate that this chemical species was not requested or not analyzed.

    Range of values
    Minimum:50
    Maximum:5190
    Units:parts per million

    Pb_ppm
    Lead values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy (ICP-AES), HF-HNO3-HClO4-HCl; Lower detection limit = 2 ppm; Upper detection limit = 10000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex.)

    ValueDefinition
    -2Above detection limit.
    NULLBlank (NULL) field values indicate that this chemical species was not requested or not analyzed.

    Range of values
    Minimum:5
    Maximum:95
    Units:parts per million

    S_pct
    Sulfur values measured in percent (pct); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy (ICP-AES), HF-HNO3-HClO4-HCl; Lower detection limit = 0.01 pct; Upper detection limit = 10 pct; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex.)

    ValueDefinition
    -1Below detection limit.

    Range of values
    Minimum:0.01
    Maximum:0.17
    Units:percent

    Sb_ppm
    Antimony values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy (ICP-AES), HF-HNO3-HClO4-HCl; Lower detection limit = 5 ppm; Upper detection limit = 10000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex.)

    ValueDefinition
    -1Below detection limit.

    Range of values
    Minimum:5
    Maximum:28
    Units:parts per million

    Sc_ppm
    Scandium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy (ICP-AES), HF-HNO3-HClO4-HCl; Lower detection limit = 1 ppm; Upper detection limit = 10000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex.)

    ValueDefinition
    NULLBlank (NULL) field values indicate that this chemical species was not requested or not analyzed.

    Range of values
    Minimum:1
    Maximum:49
    Units:parts per million

    Sr_ppm_2
    Strontium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy (ICP-AES), HF-HNO3-HClO4-HCl; Lower detection limit = 1 ppm; Upper detection limit = 10000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex.)

    ValueDefinition
    NULLBlank (NULL) field values indicate that this chemical species was not requested or not analyzed.

    Range of values
    Minimum:12
    Maximum:713
    Units:parts per million

    Th_ppm_3
    Thorium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy (ICP-AES), HF-HNO3-HClO4-HCl; Lower detection limit = 20 ppm; Upper detection limit = 10000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex.)

    ValueDefinition
    -1Below detection limit.

    Range of values
    Minimum:20
    Maximum:4020
    Units:parts per million

    Ti_pct
    Titanium values measured in percent (pct); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy (ICP-AES), HF-HNO3-HClO4-HCl; Lower detection limit = 0.01 pct; Upper detection limit = 10 pct; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex.)

    ValueDefinition
    -2Above detection limit.
    NULLBlank (NULL) field values indicate that this chemical species was not requested or not analyzed.

    Range of values
    Minimum:0.05
    Maximum:9.82
    Units:percent

    Tl_ppm_2
    Thallium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy (ICP-AES), HF-HNO3-HClO4-HCl; Lower detection limit = 10 ppm; Upper detection limit = 10000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex.)

    ValueDefinition
    -1Below detection limit.

    Range of values
    Minimum:10
    Maximum:20
    Units:parts per million

    U_ppm_3
    Uranium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy (ICP-AES), HF-HNO3-HClO4-HCl; Lower detection limit = 10 ppm; Upper detection limit = 10000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex.)

    ValueDefinition
    -1Below detection limit.

    Range of values
    Minimum:10
    Maximum:410
    Units:parts per million

    V_ppm_2
    Vanadium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy (ICP-AES), HF-HNO3-HClO4-HCl; Lower detection limit = 1 ppm; Upper detection limit = 10000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex.)

    ValueDefinition
    NULLBlank (NULL) field values indicate that this chemical species was not requested or not analyzed.

    Range of values
    Minimum:6
    Maximum:348
    Units:parts per million

    W_ppm_3
    Tungsten values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy (ICP-AES), HF-HNO3-HClO4-HCl; Lower detection limit = 10 ppm; Upper detection limit = 10000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex.)

    ValueDefinition
    -1Below detection limit.

    Range of values
    Minimum:10
    Maximum:2610
    Units:parts per million

    Zn_ppm
    Zinc values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy (ICP-AES), HF-HNO3-HClO4-HCl; Lower detection limit = 2 ppm; Upper detection limit = 10000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex.)

    ValueDefinition
    NULLBlank (NULL) field values indicate that this chemical species was not requested or not analyzed.

    Range of values
    Minimum:10
    Maximum:502
    Units:parts per million

    rdf2013-5-rock-major-minor-oxide-trace-element-ree.csv, rdf2013-5-rock-major-minor-oxide-trace-element-ree-limits.csv
    Major- and minor-oxide, trace-element, and rare-earth-element analysis of pulverized rock samples . (Source: Alaska Division of Geological & Geophysical Surveys)

    Station
    Label assigned to identify the field location where a sample was collected. For this project a unique station value was created for all visited sites that yielded samples. However, the "Station" identifier does not uniquely identify each sample; in some cases, multiple samples were collected from the same site for different purposes. In other cases, a station number may be duplicated because the lab provided multiple analyses for a particular sample. (Source: Alaska Division of Geological & Geophysical Surveys)

    Generic example of a station identifier: 20YYAAA9999X: YY=last two digits of year, AAA=geologist's initials (one to three characters), 9999=unique station number, X= optional alpha character which indicates that multiple samples were collected at a given location or that multiple observations were recorded in the project database. The initials used by the geologists who collected samples for this project are: AT = Amy L. Tuzzolino; BW = William (aka Bill) Wylie; LF = Larry Freeman; RN = Rainer Newberry; MJB = Michael J. Blessington; MBW = Melanie B. Werdon; CW = T. Colby Wright; and EB = Erik N. Bachmann.

    Latitude
    Latitude, NAD27 (Source: Alaska Division of Geological & Geophysical Surveys)

    Range of values
    Minimum:65.713882
    Maximum:66.74655
    Units:decimal degrees

    Longitude
    Longitude, NAD27 (Source: Alaska Division of Geological & Geophysical Surveys)

    Range of values
    Minimum:-151.69061
    Maximum:-149.769035
    Units:decimal degrees

    Weight_kg
    Sample weight in kilograms (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex)

    Range of values
    Minimum:0.28
    Maximum:7.46
    Units:kilograms

    Map_Unit_Name
    When possible, we indicate our interpretation of the geologic map unit associated with rock samples. Map unit names are derived from nomenclature or map unit labeling provided in pre-existing literature. Questionable unit interpretations are noted in the corresponding "Description" field of the table. (Source: Alaska Division of Geological & Geophysical Surveys)

    ValueDefinition
    unknownThe map unit could not be determined.
    Bonanza PlutonField context and/or geochemical analysis indicate that this sample is associated with the Bonanza Pluton unit described in Patton, W.W., Jr. and Miller, T.P., 1973, Bedrock geologic map of Bettles and southern part of Wiseman quadrangles, Alaska: U.S. Geological Survey Miscellaneous Field Studies Map 492, 1 sheet, scale 1:250,000
    Coal Creek PlutonField context and/or geochemical analysis indicate that this sample is associated with the Coal Creek Pluton unit described in Barker, J.C. and Foley, J.Y., 1986, Tin reconnaissance of the Kanuti and Hodzana Rivers uplands, central Alaska: U.S. Bureau of Mines Information Circular 9104, 27 p.
    Fort Hamlin Hills PlutonField context and/or geochemical analysis indicate that this sample is associated with the Fort Hamlin Hills Pluton unit described in Barker, J.C. and Foley, J.Y., 1986, Tin reconnaissance of the Kanuti and Hodzana Rivers uplands, central Alaska: U.S. Bureau of Mines Information Circular 9104, 27 p.
    Hot Springs PlutonField context and/or geochemical analysis indicate that this sample is associated with the Hot Springs Pluton unit described in Patton, W.W., Jr. and Miller, T.P., 1973, Bedrock geologic map of Bettles and southern part of Wiseman quadrangles, Alaska: U.S. Geological Survey Miscellaneous Field Studies Map 492, 1 sheet, scale 1:250,000
    Kanuti PlutonField context and/or geochemical analysis indicate that this sample is associated with the Kanuti Pluton unit described in Miller, Thomas P., 1989, Contrasting plutonic rock suites of the Yukon-Koyukuk Basin and the Ruby Geanticline, Alaska: Journal of Geophysical Research, vol. 94, no. B11, p. 969-987
    Ray Mountains PlutonField context and/or geochemical analysis indicate that this sample is associated with the Ray Mountains Pluton unit described in Miller, Thomas P., 1989, Contrasting plutonic rock suites of the Yukon-Koyukuk Basin and the Ruby Geanticline, Alaska: Journal of Geophysical Research, vol. 94, no. B11, p. 969-987
    Ray River PlutonField context and/or geochemical analysis indicate that this sample is associated with the Ray River Pluton unit described in Barker, J.C. and Foley, J.Y., 1986, Tin reconnaissance of the Kanuti and Hodzana Rivers uplands, central Alaska: U.S. Bureau of Mines Information Circular 9104, 27 p.
    Ruby TerraneField context and/or geochemical analysis indicate that this sample is associated with the Ruby Terrane unit described in Jones, D.L., Silberling, N.J., Coney, P.J., and Plafker, George, 1987, Lithotectonic terrane map of Alaska (west of the 141st meridian): U.S. Geological Survey Miscellaneous Field Studies Map 1874-A, 1 sheet, scale 1:2,500,000
    Sithylemenkat PlutonField context and/or geochemical analysis indicate that this sample is associated with the Sithylemenkat Pluton unit described in Patton, W.W., Jr. and Miller, T.P., 1970, Preliminary geologic investigations in the Kanuti River region, Alaska: U.S. Geological Survey Bulletin 1312-J, p. J1-J10.
    Tozitna TerraneField context and/or geochemical analysis indicate that this sample is associated with the Tozitna Terrane unit described in Jones, D.L., Silberling, N.J., Coney, P.J., and Plafker, George, 1987, Lithotectonic terrane map of Alaska (west of the 141st meridian): U.S. Geological Survey Miscellaneous Field Studies Map 1874-A, 1 sheet, scale 1:2,500,000

    Description
    Description of the sample. (Source: Alaska Division of Geological & Geophysical Surveys)

    Characters 1 to 254 of a brief sample and/or station description.

    Descrip_2
    Extension of the sample and/or station description for descriptions which are greater than 254 characters in length. (Source: Alaska Division of Geological & Geophysical Surveys)

    ValueDefinition
    NULLBlank (NULL) field values indicate that this data was not recorded by the sample collector.

    Characters greater than 255 of the sample and/or station description.

    SiO2_pct
    Silicon dioxide values measured in percent (pct); Method: X-Ray Fluorescence (XRF), Lithium Borate Fusion; Lower detection limit = 0.01 pct; Upper detection limit = 100 pct; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex.)

    Range of values
    Minimum:45.33
    Maximum:76.76
    Units:percent

    Al2O3_pct
    Aluminum oxide values measured in percent (pct); Method: X-Ray Fluorescence (XRF), Lithium Borate Fusion; Lower detection limit = 0.01 pct; Upper detection limit = 100 pct; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex.)

    Range of values
    Minimum:11.64
    Maximum:22.22
    Units:percent

    Fe2O3_pct
    Iron oxide (+3) values measured in percent (pct); Method: X-Ray Fluorescence (XRF), Lithium Borate Fusion; Lower detection limit = 0.01 pct; Upper detection limit = 100 pct; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex.)

    Range of values
    Minimum:0.61
    Maximum:11
    Units:percent

    CaO_pct
    Calcium Oxide values measured in percent (pct); Method: X-Ray Fluorescence (XRF), Lithium Borate Fusion; Lower detection limit = 0.01 pct; Upper detection limit = 100 pct; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex.)

    Range of values
    Minimum:0.05
    Maximum:16.19
    Units:percent

    MgO_pct
    Magnesium oxide values measured in percent (pct); Method: X-Ray Fluorescence (XRF), Lithium Borate Fusion; Lower detection limit = 0.01 pct; Upper detection limit = 100 pct; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex.)

    Range of values
    Minimum:0.03
    Maximum:12.28
    Units:percent

    Na2O_pct
    Sodium Oxide values measured in percent (pct); Method: X-Ray Fluorescence (XRF), Lithium Borate Fusion; Lower detection limit = 0.01 pct; Upper detection limit = 100 pct; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex.)

    Range of values
    Minimum:0.86
    Maximum:4.09
    Units:percent

    K2O_pct
    Potassium oxide values measured in percent (pct); Method: X-Ray Fluorescence (XRF), Lithium Borate Fusion; Lower detection limit = 0.01 pct; Upper detection limit = 100 pct; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex.)

    Range of values
    Minimum:0.02
    Maximum:7.81
    Units:percent

    Cr2O3_pct
    Chromium Oxide values measured in percent (pct); Method: X-Ray Fluorescence (XRF), Lithium Borate Fusion; Lower detection limit = 0.01 pct; Upper detection limit = 100 pct; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex.)

    ValueDefinition
    -1Below detection limit.

    Range of values
    Minimum:0.01
    Maximum:0.11
    Units:percent

    TiO2_pct
    Titanium dioxide values measured in percent (pct); Method: X-Ray Fluorescence (XRF), Lithium Borate Fusion; Lower detection limit = 0.01 pct; Upper detection limit = 100 pct; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex.)

    Range of values
    Minimum:0.03
    Maximum:1.76
    Units:percent

    MnO_pct
    Manganese oxide values measured in percent (pct); Method: X-Ray Fluorescence (XRF), Lithium Borate Fusion; Lower detection limit = 0.01 pct; Upper detection limit = 100 pct; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex.)

    Range of values
    Minimum:0.01
    Maximum:0.2
    Units:percent

    P2O5_pct
    Phosphorus oxide values measured in percent (pct); Method: X-Ray Fluorescence (XRF), Lithium Borate Fusion; Lower detection limit = 0.01 pct; Upper detection limit = 100 pct; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. Note: the reported values may be below instrumentation detection limits. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex.)

    Range of values
    Minimum:0.009
    Maximum:0.855
    Units:percent

    SrO_pct
    Strontium Oxide values measured in percent (pct); Method: X-Ray Fluorescence (XRF), Lithium Borate Fusion; Lower detection limit = 0.01 pct; Upper detection limit = 100 pct; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex.)

    ValueDefinition
    -1Below detection limit.

    Range of values
    Minimum:0.01
    Maximum:0.12
    Units:percent

    BaO_pct
    Barium Oxide values measured in percent (pct); Method: X-Ray Fluorescence (XRF), Lithium Borate Fusion; Lower detection limit = 0.01 pct; Upper detection limit = 100 pct; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex.)

    ValueDefinition
    -1Below detection limit.

    Range of values
    Minimum:0.01
    Maximum:0.22
    Units:percent

    LOI_pct
    Loss on Ignition values measured in percent (pct); Method: X-Ray Fluorescence (XRF), Lithium Borate Fusion; Lower detection limit = 0.01 pct; Upper detection limit = 100 pct; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex.)

    Range of values
    Minimum:0.29
    Maximum:3.79
    Units:percent

    Total_pct
    Total values measured in percent (pct); Method: X-Ray Fluorescence (XRF), Lithium Borate Fusion; Lower detection limit = 0.01 pct; Upper detection limit = 100 pct; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex.)

    Range of values
    Minimum:98.16
    Maximum:99.99
    Units:percent

    Ba_ppm
    Barium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Mass Spectroscopy (ICP-MS), Lithium metaborate fusion - HNO3-HCl dissolution; Lower detection limit = 0.5 ppm; Upper detection limit = 10000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex.)

    Range of values
    Minimum:5
    Maximum:2000
    Units:parts per million

    Ce_ppm
    Cerium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Mass Spectroscopy (ICP-MS), Lithium metaborate fusion - HNO3-HCl dissolution; Lower detection limit = 0.5 ppm; Upper detection limit = 10000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex.)

    Range of values
    Minimum:1
    Maximum:244
    Units:parts per million

    Cr_ppm
    Chromium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Mass Spectroscopy (ICP-MS), Lithium metaborate fusion - HNO3-HCl dissolution; Lower detection limit = 10 ppm; Upper detection limit = 10000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex.)

    ValueDefinition
    -1Below detection limit.

    Range of values
    Minimum:10
    Maximum:800
    Units:parts per million

    Cs_ppm
    Cesium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Mass Spectroscopy (ICP-MS), Lithium metaborate fusion - HNO3-HCl dissolution; Lower detection limit = 0.01 ppm; Upper detection limit = 10000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex.)

    Range of values
    Minimum:0.55
    Maximum:95.8
    Units:parts per million

    Dy_ppm
    Dysprosium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Mass Spectroscopy (ICP-MS), Lithium metaborate fusion - HNO3-HCl dissolution; Lower detection limit = 0.05 ppm; Upper detection limit = 1000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex.)

    Range of values
    Minimum:0.53
    Maximum:17.25
    Units:parts per million

    Er_ppm
    Erbium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Mass Spectroscopy (ICP-MS), Lithium metaborate fusion - HNO3-HCl dissolution; Lower detection limit = 0.03 ppm; Upper detection limit = 1000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex.)

    Range of values
    Minimum:0.3
    Maximum:11.95
    Units:parts per million

    Eu_ppm
    Europium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Mass Spectroscopy (ICP-MS), Lithium metaborate fusion - HNO3-HCl dissolution; Lower detection limit = 0.03 ppm; Upper detection limit = 1000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex.)

    Range of values
    Minimum:0.04
    Maximum:2.91
    Units:parts per million

    Ga_ppm
    Gallium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Mass Spectroscopy (ICP-MS), Lithium metaborate fusion - HNO3-HCl dissolution; Lower detection limit = 0.1 ppm; Upper detection limit = 1000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex.)

    Range of values
    Minimum:13.6
    Maximum:25.4
    Units:parts per million

    Gd_ppm
    Gadolinium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Mass Spectroscopy (ICP-MS), Lithium metaborate fusion - HNO3-HCl dissolution; Lower detection limit = 0.05 ppm; Upper detection limit = 1000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex.)

    Range of values
    Minimum:0.55
    Maximum:16.3
    Units:parts per million

    Hf_ppm
    Hafnium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Mass Spectroscopy (ICP-MS), Lithium metaborate fusion - HNO3-HCl dissolution; Lower detection limit = 0.2 ppm; Upper detection limit = 10000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex.)

    ValueDefinition
    -1Below detection limit.

    Range of values
    Minimum:1.7
    Maximum:14.8
    Units:parts per million

    Ho_ppm
    Holmium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Mass Spectroscopy (ICP-MS), Lithium metaborate fusion - HNO3-HCl dissolution; Lower detection limit = 0.01 ppm; Upper detection limit = 1000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex.)

    Range of values
    Minimum:0.11
    Maximum:3.8
    Units:parts per million

    La_ppm
    Lanthanum values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Mass Spectroscopy (ICP-MS), Lithium metaborate fusion - HNO3-HCl dissolution; Lower detection limit = 0.5 ppm; Upper detection limit = 10000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex.)

    ValueDefinition
    -1Below detection limit.

    Range of values
    Minimum:4.2
    Maximum:132.5
    Units:parts per million

    Lu_ppm
    Lutetium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Mass Spectroscopy (ICP-MS), Lithium metaborate fusion - HNO3-HCl dissolution; Lower detection limit = 0.01 ppm; Upper detection limit = 1000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex.)

    Range of values
    Minimum:0.04
    Maximum:1.9
    Units:parts per million

    Nb_ppm
    Niobium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Mass Spectroscopy (ICP-MS), Lithium metaborate fusion - HNO3-HCl dissolution; Lower detection limit = 0.2 ppm; Upper detection limit = 2500 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex.)

    ValueDefinition
    -1Below detection limit.

    Range of values
    Minimum:1.5
    Maximum:48.5
    Units:parts per million

    Nd_ppm
    Neodymium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Mass Spectroscopy (ICP-MS), Lithium metaborate fusion - HNO3-HCl dissolution; Lower detection limit = 0.1 ppm; Upper detection limit = 10000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex.)

    Range of values
    Minimum:1
    Maximum:97
    Units:parts per million

    Pr_ppm
    Praseodymium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Mass Spectroscopy (ICP-MS), Lithium metaborate fusion - HNO3-HCl dissolution; Lower detection limit = 0.03 ppm; Upper detection limit = 1000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex.)

    Range of values
    Minimum:0.18
    Maximum:29.3
    Units:parts per million

    Rb_ppm
    Rubidium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Mass Spectroscopy (ICP-MS), Lithium metaborate fusion - HNO3-HCl dissolution; Lower detection limit = 0.2 ppm; Upper detection limit = 10000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex.)

    Range of values
    Minimum:1.4
    Maximum:896
    Units:parts per million

    Sm_ppm
    Samarium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Mass Spectroscopy (ICP-MS), Lithium metaborate fusion - HNO3-HCl dissolution; Lower detection limit = 0.03 ppm; Upper detection limit = 1000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex.)

    Range of values
    Minimum:0.41
    Maximum:15.95
    Units:parts per million

    Sn_ppm
    Tin values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Mass Spectroscopy (ICP-MS), Lithium metaborate fusion - HNO3-HCl dissolution; Lower detection limit = 1 ppm; Upper detection limit = 10000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex.)

    ValueDefinition
    -1Below detection limit.

    Range of values
    Minimum:1
    Maximum:101
    Units:parts per million

    Sr_ppm
    Strontium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Mass Spectroscopy (ICP-MS), Lithium metaborate fusion - HNO3-HCl dissolution; Lower detection limit = 0.1 ppm; Upper detection limit = 10000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex.)

    Range of values
    Minimum:5.4
    Maximum:1135
    Units:parts per million

    Ta_ppm
    Tantalum values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Mass Spectroscopy (ICP-MS), Lithium metaborate fusion - HNO3-HCl dissolution; Lower detection limit = 0.1 ppm; Upper detection limit = 2500 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex.)

    ValueDefinition
    -1Below detection limit.

    Range of values
    Minimum:0.1
    Maximum:15
    Units:parts per million

    Tb_ppm
    Terbium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Mass Spectroscopy (ICP-MS), Lithium metaborate fusion - HNO3-HCl dissolution; Lower detection limit = 0.01 ppm; Upper detection limit = 1000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex.)

    Range of values
    Minimum:0.09
    Maximum:2.98
    Units:parts per million

    Th_ppm
    Thorium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Mass Spectroscopy (ICP-MS), Lithium metaborate fusion - HNO3-HCl dissolution; Lower detection limit = 0.05 ppm; Upper detection limit = 1000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex.)

    Range of values
    Minimum:0.06
    Maximum:88.3
    Units:parts per million

    Tl_ppm
    Thallium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Mass Spectroscopy (ICP-MS), Lithium metaborate fusion - HNO3-HCl dissolution; Lower detection limit = 0.5 ppm; Upper detection limit = 1000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex.)

    ValueDefinition
    -1Below detection limit.

    Range of values
    Minimum:0.8
    Maximum:4.2
    Units:parts per million

    Tm_ppm
    Thulium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Mass Spectroscopy (ICP-MS), Lithium metaborate fusion - HNO3-HCl dissolution; Lower detection limit = 0.01 ppm; Upper detection limit = 1000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex.)

    Range of values
    Minimum:0.05
    Maximum:1.9
    Units:parts per million

    U_ppm
    Uranium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Mass Spectroscopy (ICP-MS), Lithium metaborate fusion - HNO3-HCl dissolution; Lower detection limit = 0.05 ppm; Upper detection limit = 1000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex.)

    ValueDefinition
    -1Below detection limit.

    Range of values
    Minimum:0.2
    Maximum:22.4
    Units:parts per million

    V_ppm
    Vanadium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Mass Spectroscopy (ICP-MS), Lithium metaborate fusion - HNO3-HCl dissolution; Lower detection limit = 5 ppm; Upper detection limit = 10000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex.)

    ValueDefinition
    -1Below detection limit.

    Range of values
    Minimum:5
    Maximum:272
    Units:parts per million

    W_ppm
    Tungsten values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Mass Spectroscopy (ICP-MS), Lithium metaborate fusion - HNO3-HCl dissolution; Lower detection limit = 1 ppm; Upper detection limit = 10000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex.)

    ValueDefinition
    -1Below detection limit.

    Range of values
    Minimum:1
    Maximum:25
    Units:parts per million

    Y_ppm
    Yttrium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Mass Spectroscopy (ICP-MS), Lithium metaborate fusion - HNO3-HCl dissolution; Lower detection limit = 0.5 ppm; Upper detection limit = 10000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex.)

    Range of values
    Minimum:2.8
    Maximum:121
    Units:parts per million

    Yb_ppm
    Ytterbium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Mass Spectroscopy (ICP-MS), Lithium metaborate fusion - HNO3-HCl dissolution; Lower detection limit = 0.03 ppm; Upper detection limit = 1000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex.)

    Range of values
    Minimum:0.25
    Maximum:12.95
    Units:parts per million

    Zr_ppm
    Zirconium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Mass Spectroscopy (ICP-MS), Lithium metaborate fusion - HNO3-HCl dissolution; Lower detection limit = 2 ppm; Upper detection limit = 10000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex.)

    Range of values
    Minimum:4
    Maximum:499
    Units:parts per million

    rdf2013-5-rock-trace-element-ree.csv, rdf2013-5-rock-trace-element-ree-limits.csv
    Trace-element and rare-earth-element analysis of pulverized rock samples. (Source: Alaska Division of Geological & Geophysical Surveys)

    Station
    Label assigned to identify the field location where a sample was collected. For this project a unique station value was created for all visited sites that yielded samples. However, the "Station" identifier does not uniquely identify each sample; in some cases, multiple samples were collected from the same site for different purposes. In other cases, a station number may be duplicated because the lab provided multiple analyses for a particular sample. (Source: Alaska Division of Geological & Geophysical Surveys)

    Generic example of a station identifier: 20YYAAA9999X: YY=last two digits of year, AAA=geologist's initials (one to three characters), 9999=unique station number, X= optional alpha character which indicates that multiple samples were collected at a given location or that multiple observations were recorded in the project database. The initials used by the geologists who collected samples for this project are: AT = Amy L. Tuzzolino; BW = William (aka Bill) Wylie; LF = Larry Freeman; RN = Rainer Newberry; MJB = Michael J. Blessington; MBW = Melanie B. Werdon; CW = T. Colby Wright; and EB = Erik N. Bachmann.

    Latitude
    Latitude, NAD27 (Source: Alaska Division of Geological & Geophysical Surveys)

    Range of values
    Minimum:65.716771
    Maximum:66.78137
    Units:decimal degrees

    Longitude
    Longitude, NAD27 (Source: Alaska Division of Geological & Geophysical Surveys)

    Range of values
    Minimum:-151.527516
    Maximum:-149.800553
    Units:decimal degrees

    Weight_kg
    Sample weight in kilograms (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex)

    Range of values
    Minimum:0.07
    Maximum:3.68
    Units:kilograms

    Description
    Description of the sample. (Source: Alaska Division of Geological & Geophysical Surveys)

    Characters 1 to 254 of a brief sample and/or station description.

    Descrip_2
    Extension of the sample and/or station description for descriptions which are greater than 254 characters in length. (Source: Alaska Division of Geological & Geophysical Surveys)

    ValueDefinition
    NULLBlank (NULL) field values indicate that this data was not recorded by the sample collector.

    Characters greater than 255 of the sample and/or station description.

    Ba_ppm_1
    Barium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Mass Spectroscopy (ICP-MS), Lithium metaborate fusion - HNO3-HCl dissolution; Lower detection limit = 0.5 ppm; Upper detection limit = 10000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex.)

    Range of values
    Minimum:2.7
    Maximum:5690
    Units:parts per million

    Ce_ppm
    Cerium values measured in parts per million (ppm); Method: X-Ray Fluorescence (XRF), Lithium Borate Fusion; Lower detection limit = 0.5 ppm; Upper detection limit = 10000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex.)

    ValueDefinition
    -1Below detection limit.

    Range of values
    Minimum:0.5
    Maximum:504
    Units:parts per million

    Cr_ppm_1
    Chromium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Mass Spectroscopy (ICP-MS), Lithium metaborate fusion - HNO3-HCl dissolution; Lower detection limit = 10 ppm; Upper detection limit = 10000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex.)

    ValueDefinition
    -1Below detection limit.

    Range of values
    Minimum:10
    Maximum:380
    Units:parts per million

    Cs_ppm
    Cesium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Mass Spectroscopy (ICP-MS), Lithium metaborate fusion - HNO3-HCl dissolution; Lower detection limit = 0.01 ppm; Upper detection limit = 10000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex.)

    Range of values
    Minimum:0.12
    Maximum:118
    Units:parts per million

    Dy_ppm
    Dysprosium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Mass Spectroscopy (ICP-MS), Lithium metaborate fusion - HNO3-HCl dissolution; Lower detection limit = 0.05 ppm; Upper detection limit = 1000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex.)

    ValueDefinition
    -1Below detection limit.

    Range of values
    Minimum:0.05
    Maximum:63.5
    Units:parts per million

    Er_ppm
    Erbium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Mass Spectroscopy (ICP-MS), Lithium metaborate fusion - HNO3-HCl dissolution; Lower detection limit = 0.03 ppm; Upper detection limit = 1000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex.)

    ValueDefinition
    -1Below detection limit.

    Range of values
    Minimum:0.03
    Maximum:60.1
    Units:parts per million

    Eu_ppm
    Europium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Mass Spectroscopy (ICP-MS), Lithium metaborate fusion - HNO3-HCl dissolution; Lower detection limit = 0.03 ppm; Upper detection limit = 1000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex.)

    ValueDefinition
    -1Below detection limit.

    Range of values
    Minimum:0.03
    Maximum:2.94
    Units:parts per million

    Ga_ppm_1
    Gallium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Mass Spectroscopy (ICP-MS), Lithium metaborate fusion - HNO3-HCl dissolution; Lower detection limit = 0.1 ppm; Upper detection limit = 1000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex.)

    Range of values
    Minimum:0.6
    Maximum:64.6
    Units:parts per million

    Gd_ppm
    Gadolinium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Mass Spectroscopy (ICP-MS), Lithium metaborate fusion - HNO3-HCl dissolution; Lower detection limit = 0.05 ppm; Upper detection limit = 1000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex.)

    ValueDefinition
    -1Below detection limit.

    Range of values
    Minimum:0.05
    Maximum:30.1
    Units:parts per million

    Hf_ppm
    Hafnium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Mass Spectroscopy (ICP-MS), Lithium metaborate fusion - HNO3-HCl dissolution; Lower detection limit = 0.2 ppm; Upper detection limit = 10000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex.)

    ValueDefinition
    -1Below detection limit.

    Range of values
    Minimum:0.2
    Maximum:11.7
    Units:parts per million

    Ho_ppm
    Holmium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Mass Spectroscopy (ICP-MS), Lithium metaborate fusion - HNO3-HCl dissolution; Lower detection limit = 0.01 ppm; Upper detection limit = 1000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex.)

    Range of values
    Minimum:0.01
    Maximum:16.05
    Units:parts per million

    La_ppm_1
    Lanthanum values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Mass Spectroscopy (ICP-MS), Lithium metaborate fusion - HNO3-HCl dissolution; Lower detection limit = 0.5 ppm; Upper detection limit = 10000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex.)

    ValueDefinition
    -1Below detection limit.

    Range of values
    Minimum:0.6
    Maximum:542
    Units:parts per million

    Lu_ppm
    Lutetium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Mass Spectroscopy (ICP-MS), Lithium metaborate fusion - HNO3-HCl dissolution; Lower detection limit = 0.01 ppm; Upper detection limit = 1000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex.)

    ValueDefinition
    -1Below detection limit.

    Range of values
    Minimum:0.01
    Maximum:10.85
    Units:parts per million

    Nb_ppm
    Niobium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Mass Spectroscopy (ICP-MS), Lithium metaborate fusion - HNO3-HCl dissolution; Lower detection limit = 0.2 ppm; Upper detection limit = 2500 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex.)

    Range of values
    Minimum:0.2
    Maximum:86.4
    Units:parts per million

    Nb_pct
    Niobium values measured in percent (pct); Method: X-Ray Fluorescence (XRF), Lithium Borate Fusion; Lower detection limit = 0.01 pct; Upper detection limit = 10 pct; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex.)

    ValueDefinition
    -1Below detection limit.
    NULLBlank (NULL) field values indicate that this chemical species was not requested or not analyzed.

    Nd_ppm
    Neodymium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Mass Spectroscopy (ICP-MS), Lithium metaborate fusion - HNO3-HCl dissolution; Lower detection limit = 0.1 ppm; Upper detection limit = 10000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex.)

    Range of values
    Minimum:0.1
    Maximum:294
    Units:parts per million

    Pr_ppm
    Praseodymium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Mass Spectroscopy (ICP-MS), Lithium metaborate fusion - HNO3-HCl dissolution; Lower detection limit = 0.03 ppm; Upper detection limit = 1000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex.)

    Range of values
    Minimum:0.03
    Maximum:94.6
    Units:parts per million

    Rb_ppm
    Rubidium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Mass Spectroscopy (ICP-MS), Lithium metaborate fusion - HNO3-HCl dissolution; Lower detection limit = 0.2 ppm; Upper detection limit = 10000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex.)

    Range of values
    Minimum:0.9
    Maximum:1905
    Units:parts per million

    Sm_ppm
    Samarium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Mass Spectroscopy (ICP-MS), Lithium metaborate fusion - HNO3-HCl dissolution; Lower detection limit = 0.03 ppm; Upper detection limit = 1000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex.)

    Range of values
    Minimum:0.03
    Maximum:38.9
    Units:parts per million

    Sn_ppm
    Tin values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Mass Spectroscopy (ICP-MS), Lithium metaborate fusion - HNO3-HCl dissolution; Lower detection limit = 1 ppm; Upper detection limit = 10000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex.)

    ValueDefinition
    -1Below detection limit.
    -2Above detection limit.

    Range of values
    Minimum:1
    Maximum:8540
    Units:parts per million

    Sn_pct
    Tin values measured in percent (pct); Method: X-Ray Fluorescence (XRF), Lithium Borate Fusion; Lower detection limit = 0.01 pct; Upper detection limit = 60 pct; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex.)

    ValueDefinition
    NULLBlank (NULL) field values indicate that this chemical species was not requested or not analyzed.

    Range of values
    Minimum:1.01
    Maximum:2.57
    Units:percent

    Sr_ppm_1
    Strontium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Mass Spectroscopy (ICP-MS), Lithium metaborate fusion - HNO3-HCl dissolution; Lower detection limit = 0.1 ppm; Upper detection limit = 10000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex.)

    Range of values
    Minimum:0.2
    Maximum:1140
    Units:parts per million

    Ta_ppm
    Tantalum values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Mass Spectroscopy (ICP-MS), Lithium metaborate fusion - HNO3-HCl dissolution; Lower detection limit = 0.1 ppm; Upper detection limit = 2500 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex.)

    ValueDefinition
    -1Below detection limit.

    Range of values
    Minimum:0.1
    Maximum:39
    Units:parts per million

    Tb_ppm
    Terbium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Mass Spectroscopy (ICP-MS), Lithium metaborate fusion - HNO3-HCl dissolution; Lower detection limit = 0.01 ppm; Upper detection limit = 1000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex.)

    ValueDefinition
    -1Below detection limit.

    Range of values
    Minimum:0.01
    Maximum:7.72
    Units:parts per million

    Th_ppm_1
    Thorium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Mass Spectroscopy (ICP-MS), Lithium metaborate fusion - HNO3-HCl dissolution; Lower detection limit = 0.05 ppm; Upper detection limit = 1000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex.)

    Range of values
    Minimum:0.09
    Maximum:120.5
    Units:parts per million

    Tl_ppm_1
    Thallium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Mass Spectroscopy (ICP-MS), Lithium metaborate fusion - HNO3-HCl dissolution; Lower detection limit = 0.5 ppm; Upper detection limit = 1000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex.)

    ValueDefinition
    -1Below detection limit.

    Range of values
    Minimum:0.5
    Maximum:10.2
    Units:parts per million

    Tm_ppm
    Thulium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Mass Spectroscopy (ICP-MS), Lithium metaborate fusion - HNO3-HCl dissolution; Lower detection limit = 0.01 ppm; Upper detection limit = 1000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex.)

    ValueDefinition
    -1Below detection limit.

    Range of values
    Minimum:0.01
    Maximum:10.4
    Units:parts per million

    U_ppm_1
    Uranium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Mass Spectroscopy (ICP-MS), Lithium metaborate fusion - HNO3-HCl dissolution; Lower detection limit = 0.05 ppm; Upper detection limit = 1000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex.)

    ValueDefinition
    -2Above detection limit.

    Range of values
    Minimum:0.06
    Maximum:668
    Units:parts per million

    V_ppm_1
    Vanadium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Mass Spectroscopy (ICP-MS), Lithium metaborate fusion - HNO3-HCl dissolution; Lower detection limit = 5 ppm; Upper detection limit = 10000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex.)

    ValueDefinition
    -1Below detection limit.

    Range of values
    Minimum:5
    Maximum:540
    Units:parts per million

    W_ppm_1
    Tungsten values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Mass Spectroscopy (ICP-MS), Lithium metaborate fusion - HNO3-HCl dissolution; Lower detection limit = 1 ppm; Upper detection limit = 10000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex.)

    ValueDefinition
    -1Below detection limit.
    -2Above detection limit.

    Range of values
    Minimum:1
    Maximum:4240
    Units:parts per million

    Y_ppm
    Yttrium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Mass Spectroscopy (ICP-MS), Lithium metaborate fusion - HNO3-HCl dissolution; Lower detection limit = 0.5 ppm; Upper detection limit = 10000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex.)

    ValueDefinition
    -1Below detection limit.

    Range of values
    Minimum:0.6
    Maximum:572
    Units:parts per million

    Yb_ppm
    Ytterbium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Mass Spectroscopy (ICP-MS), Lithium metaborate fusion - HNO3-HCl dissolution; Lower detection limit = 0.03 ppm; Upper detection limit = 1000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex.)

    ValueDefinition
    -1Below detection limit.

    Range of values
    Minimum:0.03
    Maximum:70.5
    Units:parts per million

    Zr_ppm
    Zirconium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Mass Spectroscopy (ICP-MS), Lithium metaborate fusion - HNO3-HCl dissolution; Lower detection limit = 2 ppm; Upper detection limit = 10000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex.)

    ValueDefinition
    -1Below detection limit.

    Range of values
    Minimum:2
    Maximum:422
    Units:parts per million

    Au_ppm_1
    Gold values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy (ICP-AES), Fire assay - aqua regia; Lower detection limit = 0.001 ppm; Upper detection limit = 10 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex.)

    ValueDefinition
    -1Below detection limit.
    NULLBlank (NULL) field values indicate that this chemical species was not requested or not analyzed.

    Range of values
    Minimum:0.001
    Maximum:0.14
    Units:parts per million

    Au_ppm_2
    Gold values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy (ICP-AES), Fire assay - aqua regia; Lower detection limit = 0.001 ppm; Upper detection limit = 10 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex.)

    ValueDefinition
    -1Below detection limit.
    NULLBlank (NULL) field values indicate that this chemical species was not requested or not analyzed.

    Range of values
    Minimum:0.001
    Maximum:0.005
    Units:parts per million

    Pt_ppm
    Platinum values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy (ICP-AES), Fire assay - aqua regia; Lower detection limit = 0.005 ppm; Upper detection limit = 10 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex.)

    ValueDefinition
    -1Below detection limit.
    NULLBlank (NULL) field values indicate that this chemical species was not requested or not analyzed.

    Range of values
    Minimum:0.005
    Maximum:0.011
    Units:parts per million

    Pd_ppm
    Palladium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy (ICP-AES), Fire assay - aqua regia; Lower detection limit = 0.001 ppm; Upper detection limit = 10 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex.)

    ValueDefinition
    -1Below detection limit.
    NULLBlank (NULL) field values indicate that this chemical species was not requested or not analyzed.

    Range of values
    Minimum:0.001
    Maximum:0.013
    Units:parts per million

    Ag_ppm
    Silver values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy (ICP-AES), HF-HNO3-HClO4-HCl; Lower detection limit = 0.5 ppm; Upper detection limit = 100 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex.)

    ValueDefinition
    -1Below detection limit.

    Range of values
    Minimum:0.5
    Maximum:52.3
    Units:parts per million

    Al_pct
    Aluminum values measured in percent (pct); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy (ICP-AES), HF-HNO3-HClO4-HCl; Lower detection limit = 0.01 pct; Upper detection limit = 50 pct; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex.)

    Range of values
    Minimum:0.04
    Maximum:12.85
    Units:percent

    As_ppm
    Arsenic values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy (ICP-AES), HF-HNO3-HClO4-HCl; Lower detection limit = 5 ppm; Upper detection limit = 10000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex.)

    ValueDefinition
    -1Below detection limit.

    Range of values
    Minimum:5
    Maximum:8240
    Units:parts per million

    Ba_ppm_2
    Barium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy (ICP-AES), HF-HNO3-HClO4-HCl; Lower detection limit = 10 ppm; Upper detection limit = 10000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex.)

    ValueDefinition
    -1Below detection limit.

    Range of values
    Minimum:10
    Maximum:5230
    Units:parts per million

    Be_ppm
    Beryllium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy (ICP-AES), HF-HNO3-HClO4-HCl; Lower detection limit = 0.5 ppm; Upper detection limit = 1000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex.)

    ValueDefinition
    -1Below detection limit.

    Range of values
    Minimum:0.5
    Maximum:205
    Units:parts per million

    Bi_ppm
    Bismuth values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy (ICP-AES), HF-HNO3-HClO4-HCl; Lower detection limit = 2 ppm; Upper detection limit = 10000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex.)

    ValueDefinition
    -1Below detection limit.

    Range of values
    Minimum:2
    Maximum:955
    Units:parts per million

    Ca_pct
    Calcium values measured in percent (pct); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy (ICP-AES), HF-HNO3-HClO4-HCl; Lower detection limit = 0.01 pct; Upper detection limit = 50 pct; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex.)

    ValueDefinition
    -1Below detection limit.

    Range of values
    Minimum:0.01
    Maximum:15.5
    Units:percent

    Cd_ppm
    Cadmium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy (ICP-AES), HF-HNO3-HClO4-HCl; Lower detection limit = 0.5 ppm; Upper detection limit = 1000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex.)

    ValueDefinition
    -1Below detection limit.

    Range of values
    Minimum:0.5
    Maximum:208
    Units:parts per million

    Co_ppm
    Cobalt values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy (ICP-AES), HF-HNO3-HClO4-HCl; Lower detection limit = 1 ppm; Upper detection limit = 10000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex.)

    ValueDefinition
    -1Below detection limit.

    Range of values
    Minimum:1
    Maximum:51
    Units:parts per million

    Cr_ppm_2
    Chromium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy (ICP-AES), HF-HNO3-HClO4-HCl; Lower detection limit = 1 ppm; Upper detection limit = 10000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex.)

    ValueDefinition
    -1Below detection limit.

    Range of values
    Minimum:1
    Maximum:245
    Units:parts per million

    Cu_ppm
    Copper values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy (ICP-AES), HF-HNO3-HClO4-HCl; Lower detection limit = 1 ppm; Upper detection limit = 10000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex.)

    ValueDefinition
    -1Below detection limit.

    Range of values
    Minimum:1
    Maximum:1300
    Units:parts per million

    Fe_pct
    Iron values measured in percent (pct); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy (ICP-AES), HF-HNO3-HClO4-HCl; Lower detection limit = 0.01 pct; Upper detection limit = 50 pct; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex.)

    Range of values
    Minimum:0.28
    Maximum:27.2
    Units:percent

    Ga_ppm_2
    Gallium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy (ICP-AES), HF-HNO3-HClO4-HCl; Lower detection limit = 10 ppm; Upper detection limit = 10000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex.)

    ValueDefinition
    -1Below detection limit.

    Range of values
    Minimum:10
    Maximum:60
    Units:parts per million

    K_pct
    Potassium values measured in percent (pct); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy (ICP-AES), HF-HNO3-HClO4-HCl; Lower detection limit = 0.01 pct; Upper detection limit = 10 pct; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex.)

    Range of values
    Minimum:0.01
    Maximum:6.04
    Units:percent

    La_ppm_2
    Lanthanum values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy (ICP-AES), HF-HNO3-HClO4-HCl; Lower detection limit = 10 ppm; Upper detection limit = 10000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex.)

    ValueDefinition
    -1Below detection limit.

    Range of values
    Minimum:10
    Maximum:440
    Units:parts per million

    Mg_pct
    Magnesium values measured in percent (pct); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy (ICP-AES), HF-HNO3-HClO4-HCl; Lower detection limit = 0.01 pct; Upper detection limit = 50 pct; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex.)

    ValueDefinition
    -1Below detection limit.

    Range of values
    Minimum:0.01
    Maximum:6.07
    Units:percent

    Mn_ppm
    Manganese values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy (ICP-AES), HF-HNO3-HClO4-HCl; Lower detection limit = 5 ppm; Upper detection limit = 100000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex.)

    Range of values
    Minimum:32
    Maximum:31800
    Units:parts per million

    Mo_ppm
    Molybdenum values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy (ICP-AES), HF-HNO3-HClO4-HCl; Lower detection limit = 1 ppm; Upper detection limit = 10000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex.)

    ValueDefinition
    -1Below detection limit.

    Range of values
    Minimum:1
    Maximum:491
    Units:parts per million

    Na_pct
    Sodium values measured in percent (pct); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy (ICP-AES), HF-HNO3-HClO4-HCl; Lower detection limit = 0.01 pct; Upper detection limit = 10 pct; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex.)

    ValueDefinition
    -1Below detection limit.

    Range of values
    Minimum:0.01
    Maximum:4.51
    Units:percent

    Ni_ppm
    Nickel values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy (ICP-AES), HF-HNO3-HClO4-HCl; Lower detection limit = 1 ppm; Upper detection limit = 10000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex.)

    ValueDefinition
    -1Below detection limit.

    Range of values
    Minimum:1
    Maximum:203
    Units:parts per million

    P_ppm
    Phosphorus values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy (ICP-AES), HF-HNO3-HClO4-HCl; Lower detection limit = 10 ppm; Upper detection limit = 10000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex.)

    ValueDefinition
    -1Below detection limit.

    Range of values
    Minimum:10
    Maximum:1990
    Units:parts per million

    Pb_ppm
    Lead values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy (ICP-AES), HF-HNO3-HClO4-HCl; Lower detection limit = 2 ppm; Upper detection limit = 10000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. Note: the reported values may be above instrumentation detection limits. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex.)

    ValueDefinition
    -1Below detection limit.

    Range of values
    Minimum:2
    Maximum:23900
    Units:parts per million

    Pb_pct
    Lead values measured in percent (pct); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy (ICP-AES), HNO3-HClO4-HF+HCl; Lower detection limit = 0.001 pct; Upper detection limit = 20 pct; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex.)

    ValueDefinition
    NULLBlank (NULL) field values indicate that this chemical species was not requested or not analyzed.

    Range of values
    Minimum:1.31
    Maximum:2.39
    Units:percent

    S_pct
    Sulfur values measured in percent (pct); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy (ICP-AES), HF-HNO3-HClO4-HCl; Lower detection limit = 0.01 pct; Upper detection limit = 10 pct; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex.)

    ValueDefinition
    -1Below detection limit.

    Range of values
    Minimum:0.01
    Maximum:3.02
    Units:percent

    Sb_ppm
    Antimony values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy (ICP-AES), HF-HNO3-HClO4-HCl; Lower detection limit = 5 ppm; Upper detection limit = 10000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex.)

    ValueDefinition
    -1Below detection limit.

    Range of values
    Minimum:5
    Maximum:760
    Units:parts per million

    Sc_ppm
    Scandium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy (ICP-AES), HF-HNO3-HClO4-HCl; Lower detection limit = 1 ppm; Upper detection limit = 10000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex.)

    ValueDefinition
    -1Below detection limit.

    Range of values
    Minimum:1
    Maximum:48
    Units:parts per million

    Sr_ppm_2
    Strontium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy (ICP-AES), HF-HNO3-HClO4-HCl; Lower detection limit = 1 ppm; Upper detection limit = 10000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex.)

    ValueDefinition
    -1Below detection limit.

    Range of values
    Minimum:1
    Maximum:1270
    Units:parts per million

    Th_ppm_2
    Thorium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy (ICP-AES), HF-HNO3-HClO4-HCl; Lower detection limit = 20 ppm; Upper detection limit = 10000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex.)

    ValueDefinition
    -1Below detection limit.

    Range of values
    Minimum:20
    Maximum:110
    Units:parts per million

    Ti_pct
    Titanium values measured in percent (pct); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy (ICP-AES), HF-HNO3-HClO4-HCl; Lower detection limit = 0.01 pct; Upper detection limit = 10 pct; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex.)

    ValueDefinition
    -1Below detection limit.

    Range of values
    Minimum:0.01
    Maximum:1.23
    Units:percent

    Tl_ppm_2
    Thallium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy (ICP-AES), HF-HNO3-HClO4-HCl; Lower detection limit = 10 ppm; Upper detection limit = 10000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex.)

    ValueDefinition
    -1Below detection limit.

    Range of values
    Minimum:10
    Maximum:10
    Units:parts per million

    U_ppm_2
    Uranium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy (ICP-AES), HF-HNO3-HClO4-HCl; Lower detection limit = 10 ppm; Upper detection limit = 10000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex.)

    ValueDefinition
    -1Below detection limit.

    Range of values
    Minimum:10
    Maximum:1280
    Units:parts per million

    U_pct
    Uranium values measured in percent (pct); Method: X-Ray Fluorescence (XRF), Lithium Borate Fusion; Lower detection limit = 0.01 pct; Upper detection limit = 15 pct; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex.)

    ValueDefinition
    NULLBlank (NULL) field values indicate that this chemical species was not requested or not analyzed.

    Range of values
    Minimum:0.14
    Maximum:0.15
    Units:percent

    V_ppm_2
    Vanadium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy (ICP-AES), HF-HNO3-HClO4-HCl; Lower detection limit = 1 ppm; Upper detection limit = 10000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex.)

    ValueDefinition
    -1Below detection limit.

    Range of values
    Minimum:1
    Maximum:438
    Units:parts per million

    W_ppm_2
    Tungsten values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy (ICP-AES), HF-HNO3-HClO4-HCl; Lower detection limit = 10 ppm; Upper detection limit = 10000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex.)

    ValueDefinition
    -1Below detection limit.
    -2Above detection limit.

    Range of values
    Minimum:10
    Maximum:7040
    Units:parts per million

    W_pct
    Tungsten values measured in percent (pct); Method: X-Ray Fluorescence (XRF), Lithium Borate Fusion; Lower detection limit = 0.01 pct; Upper detection limit = 50 pct; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex.)

    ValueDefinition
    NULLBlank (NULL) field values indicate that this chemical species was not requested or not analyzed.

    Range of values
    Minimum:1.06
    Maximum:1.89
    Units:percent

    Zn_ppm
    Zinc values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy (ICP-AES), HF-HNO3-HClO4-HCl; Lower detection limit = 2 ppm; Upper detection limit = 10000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. Note: the reported values may be above instrumentation detection limits. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex.)

    ValueDefinition
    -1Below detection limit.

    Range of values
    Minimum:2
    Maximum:19700
    Units:parts per million

    Zn_pct
    Zinc values measured in percent (pct); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy (ICP-AES), HNO3-HClO4-HF+HCl; Lower detection limit = 0.001 pct; Upper detection limit = 30 pct; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex.)

    ValueDefinition
    NULLBlank (NULL) field values indicate that this chemical species was not requested or not analyzed.

    Range of values
    Minimum:1.97
    Maximum:1.97
    Units:percent

    rdf2013-5-slab-xrf-major-minor-oxide-trace-element.csv, rdf2013-5-slab-xrf-major-minor-oxide-trace-element-limits.csv
    Major- and minor-oxide and trace-element analysis of rock-slab samples. (Source: Alaska Division of Geological & Geophysical Surveys)

    Station
    Label assigned to identify the field location where a sample was collected. For this project a unique station value was created for all visited sites that yielded samples. However, the "Station" identifier does not uniquely identify each sample; in some cases, multiple samples were collected from the same site for different purposes. In other cases, a station number may be duplicated because the lab provided multiple analyses for a particular sample. (Source: Alaska Division of Geological & Geophysical Surveys)

    Generic example of a station identifier: 20YYAAA9999X: YY=last two digits of year, AAA=geologist's initials (one to three characters), 9999=unique station number, X= optional alpha character which indicates that multiple samples were collected at a given location or that multiple observations were recorded in the project database. The initials used by the geologists who collected samples for this project are: AT = Amy L. Tuzzolino; BW = William (aka Bill) Wylie; LF = Larry Freeman; RN = Rainer Newberry; MJB = Michael J. Blessington; MBW = Melanie B. Werdon; CW = T. Colby Wright; and EB = Erik N. Bachmann.

    Latitude
    Latitude, NAD27 (Source: Alaska Division of Geological & Geophysical Surveys)

    Range of values
    Minimum:65.685163
    Maximum:66.788106
    Units:decimal degrees

    Longitude
    Longitude, NAD27 (Source: Alaska Division of Geological & Geophysical Surveys)

    Range of values
    Minimum:-151.543808
    Maximum:-149.816176
    Units:decimal degrees

    Map_Unit_Name
    When possible, we indicate our interpretation of the geologic map unit associated with rock samples. Map unit names are derived from nomenclature or map unit labeling provided in pre-existing literature. Questionable unit interpretations are noted in the corresponding "Description" field of the table. (Source: Alaska Division of Geological & Geophysical Surveys)

    ValueDefinition
    unknownThe map unit could not be determined.
    Bonanza PlutonField context and/or geochemical analysis indicate that this sample is associated with the Bonanza Pluton unit described in Patton, W.W., Jr. and Miller, T.P., 1973, Bedrock geologic map of Bettles and southern part of Wiseman quadrangles, Alaska: U.S. Geological Survey Miscellaneous Field Studies Map 492, 1 sheet, scale 1:250,000
    Coal Creek PlutonField context and/or geochemical analysis indicate that this sample is associated with the Coal Creek Pluton unit described in Barker, J.C. and Foley, J.Y., 1986, Tin reconnaissance of the Kanuti and Hodzana Rivers uplands, central Alaska: U.S. Bureau of Mines Information Circular 9104, 27 p.
    Fort Hamlin Hills PlutonField context and/or geochemical analysis indicate that this sample is associated with the Fort Hamlin Hills Pluton unit described in Barker, J.C. and Foley, J.Y., 1986, Tin reconnaissance of the Kanuti and Hodzana Rivers uplands, central Alaska: U.S. Bureau of Mines Information Circular 9104, 27 p.
    Hot Springs PlutonField context and/or geochemical analysis indicate that this sample is associated with the Hot Springs Pluton unit described in Patton, W.W., Jr. and Miller, T.P., 1973, Bedrock geologic map of Bettles and southern part of Wiseman quadrangles, Alaska: U.S. Geological Survey Miscellaneous Field Studies Map 492, 1 sheet, scale 1:250,000
    Kanuti PlutonField context and/or geochemical analysis indicate that this sample is associated with the Kanuti Pluton unit described in Miller, Thomas P., 1989, Contrasting plutonic rock suites of the Yukon-Koyukuk Basin and the Ruby Geanticline, Alaska: Journal of Geophysical Research, vol. 94, no. B11, p. 969-987
    Ray Mountains PlutonField context and/or geochemical analysis indicate that this sample is associated with the Ray Mountains Pluton unit described in Miller, Thomas P., 1989, Contrasting plutonic rock suites of the Yukon-Koyukuk Basin and the Ruby Geanticline, Alaska: Journal of Geophysical Research, vol. 94, no. B11, p. 969-987
    Ray River PlutonField context and/or geochemical analysis indicate that this sample is associated with the Ray River Pluton unit described in Barker, J.C. and Foley, J.Y., 1986, Tin reconnaissance of the Kanuti and Hodzana Rivers uplands, central Alaska: U.S. Bureau of Mines Information Circular 9104, 27 p.
    Ruby TerraneField context and/or geochemical analysis indicate that this sample is associated with the Ruby Terrane unit described in Jones, D.L., Silberling, N.J., Coney, P.J., and Plafker, George, 1987, Lithotectonic terrane map of Alaska (west of the 141st meridian): U.S. Geological Survey Miscellaneous Field Studies Map 1874-A, 1 sheet, scale 1:2,500,000
    Sithylemenkat PlutonField context and/or geochemical analysis indicate that this sample is associated with the Sithylemenkat Pluton unit described in Patton, W.W., Jr. and Miller, T.P., 1970, Preliminary geologic investigations in the Kanuti River region, Alaska: U.S. Geological Survey Bulletin 1312-J, p. J1-J10.
    TbField context and/or geochemical analysis indicate that this sample is associated with the Tb unit described in Albanese, M.D., 1987, A basalt flow in the Fort Hamlin Hills, Bettles A-1 Quadrangle, Alaska: Alaska Division of Geological & Geophysical Surveys Public Data File 87-25, 11 p.
    Tozitna TerraneField context and/or geochemical analysis indicate that this sample is associated with the Tozitna Terrane unit described in Jones, D.L., Silberling, N.J., Coney, P.J., and Plafker, George, 1987, Lithotectonic terrane map of Alaska (west of the 141st meridian): U.S. Geological Survey Miscellaneous Field Studies Map 1874-A, 1 sheet, scale 1:2,500,000
    TvField context and/or geochemical analysis indicate that this sample is associated with the Tv unit described in Patton, W.W., Jr. and Miller, T.P., 1970, Preliminary geologic investigations in the Kanuti River region, Alaska: U.S. Geological Survey Bulletin 1312-J, p. J1-J10 (corresponds to map unit TVk)
    unnamed dikeField context and/or geochemical analysis indicate that this sample is associated with the unnamed dike unit described in Patton, W.W., Jr., Miller, T.P., and Box, S.E., 1989, Dalton Highway road log from Yukon Crossing (Mile 56) to South Fork Koyukuk River (Mile 15.2), in Mull, C.G. and Adams, K.E., ed., Bedrock geology of the eastern Koyukuk Basin, central Brooks Range, and east-central Arctic Slope along the Dalton Highway, Yukon River to Prudhoe Bay, Alaska: Alaska Division of Geological & Geophysical Surveys Guidebook 7-7A, p. 59-73.(see discussion of Prospect Creek area)

    Description
    Description of the sample. (Source: Alaska Division of Geological & Geophysical Surveys)

    Characters 1 to 254 of a brief sample and/or station description.

    Descrip_2
    Extension of the sample and/or station description for descriptions which are greater than 254 characters in length. (Source: Alaska Division of Geological & Geophysical Surveys)

    ValueDefinition
    NULLBlank (NULL) field values indicate that this data was not recorded by the sample collector.

    Characters greater than 255 of the sample and/or station description.

    SiO2_pct
    Silicon dioxide values measured in percent (pct); Method: X-Ray Fluorescence (XRF); Lower detection limit = 0.1 pct; Upper detection limit = 100 pct; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Alaska Division of Geological & Geophysical Surveys and University of Alaska Fairbanks, Department of Geology & Geophysics.)

    Range of values
    Minimum:25.3
    Maximum:93.64
    Units:percent

    Al2O3_pct
    Aluminum oxide values measured in percent (pct); Method: X-Ray Fluorescence (XRF); Lower detection limit = 0.05 pct; Upper detection limit = 75 pct; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Alaska Division of Geological & Geophysical Surveys and University of Alaska Fairbanks, Department of Geology & Geophysics.)

    Range of values
    Minimum:2.2
    Maximum:20.72
    Units:percent

    BaO_pct
    Barium Oxide values measured in percent (pct); Method: X-Ray Fluorescence (XRF); Lower detection limit = 0.03 pct; Upper detection limit = 75 pct; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. Note: the reported values may be below instrumentation detection limits. (Source: Alaska Division of Geological & Geophysical Surveys and University of Alaska Fairbanks, Department of Geology & Geophysics.)

    ValueDefinition
    -1Below detection limit.

    Range of values
    Minimum:0.01
    Maximum:1.38
    Units:percent

    CaO_pct
    Calcium Oxide values measured in percent (pct); Method: X-Ray Fluorescence (XRF); Lower detection limit = 0.02 pct; Upper detection limit = 75 pct; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Alaska Division of Geological & Geophysical Surveys and University of Alaska Fairbanks, Department of Geology & Geophysics.)

    Range of values
    Minimum:0.03
    Maximum:17
    Units:percent

    FeO_pct
    Iron oxide (+2) values measured in percent (pct); Method: X-Ray Fluorescence (XRF); Lower detection limit = 0.03 pct; Upper detection limit = 75 pct; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Alaska Division of Geological & Geophysical Surveys and University of Alaska Fairbanks, Department of Geology & Geophysics.)

    ValueDefinition
    -1Below detection limit.

    Range of values
    Minimum:0.07
    Maximum:48.1
    Units:percent

    K2O_pct
    Potassium oxide values measured in percent (pct); Method: X-Ray Fluorescence (XRF); Lower detection limit = 0.02 pct; Upper detection limit = 75 pct; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Alaska Division of Geological & Geophysical Surveys and University of Alaska Fairbanks, Department of Geology & Geophysics.)

    Range of values
    Minimum:0.69
    Maximum:10.92
    Units:percent

    MgO_pct
    Magnesium oxide values measured in percent (pct); Method: X-Ray Fluorescence (XRF); Lower detection limit = 0.05 pct; Upper detection limit = 75 pct; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. Note: the reported values may be below instrumentation detection limits. (Source: Alaska Division of Geological & Geophysical Surveys and University of Alaska Fairbanks, Department of Geology & Geophysics.)

    Range of values
    Minimum:0.02
    Maximum:8.8
    Units:percent

    MnO_pct
    Manganese oxide values measured in percent (pct); Method: X-Ray Fluorescence (XRF); Lower detection limit = 0.03 pct; Upper detection limit = 75 pct; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. Note: the reported values may be below instrumentation detection limits. (Source: Alaska Division of Geological & Geophysical Surveys and University of Alaska Fairbanks, Department of Geology & Geophysics.)

    ValueDefinition
    -1Below detection limit.

    Range of values
    Minimum:0.01
    Maximum:2.36
    Units:percent

    Na2O_pct
    Sodium Oxide values measured in percent (pct); Method: X-Ray Fluorescence (XRF); Lower detection limit = 0.02 pct; Upper detection limit = 75 pct; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. Note: the reported values may be below instrumentation detection limits. (Source: Alaska Division of Geological & Geophysical Surveys and University of Alaska Fairbanks, Department of Geology & Geophysics.)

    Range of values
    Minimum:0.01
    Maximum:6.36
    Units:percent

    P2O5_pct
    Phosphorus oxide values measured in percent (pct); Method: X-Ray Fluorescence (XRF); Lower detection limit = 0.03 pct; Upper detection limit = 75 pct; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. Note: the reported values may be below instrumentation detection limits. (Source: Alaska Division of Geological & Geophysical Surveys and University of Alaska Fairbanks, Department of Geology & Geophysics.)

    ValueDefinition
    -1Below detection limit.

    Range of values
    Minimum:0.01
    Maximum:1.14
    Units:percent

    TiO2_pct
    Titanium dioxide values measured in percent (pct); Method: X-Ray Fluorescence (XRF); Lower detection limit = 0.02 pct; Upper detection limit = 75 pct; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. Note: the reported values may be below instrumentation detection limits. (Source: Alaska Division of Geological & Geophysical Surveys and University of Alaska Fairbanks, Department of Geology & Geophysics.)

    Range of values
    Minimum:0.01
    Maximum:3.68
    Units:percent

    F_pct
    Fluorine values measured in percent (pct); Method: X-Ray Fluorescence (XRF); Lower detection limit = 0.01 pct; Upper detection limit = 10 pct; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Alaska Division of Geological & Geophysical Surveys and University of Alaska Fairbanks, Department of Geology & Geophysics.)

    ValueDefinition
    -1Below detection limit.

    Range of values
    Minimum:0.01
    Maximum:0.53
    Units:percent

    Cl_pct
    Chlorine values measured in percent (pct); Method: X-Ray Fluorescence (XRF); Lower detection limit = 0.01 pct; Upper detection limit = 10 pct; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Alaska Division of Geological & Geophysical Surveys and University of Alaska Fairbanks, Department of Geology & Geophysics.)

    ValueDefinition
    -1Below detection limit.

    Range of values
    Minimum:0.01
    Maximum:0.38
    Units:percent

    S_pct
    Sulfur values measured in percent (pct); Method: X-Ray Fluorescence (XRF); Lower detection limit = 0.007 pct; Upper detection limit = 50 pct; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Alaska Division of Geological & Geophysical Surveys and University of Alaska Fairbanks, Department of Geology & Geophysics.)

    ValueDefinition
    -1Below detection limit.

    Range of values
    Minimum:0.01
    Maximum:3.48
    Units:percent

    Total_pct
    Total values measured in percent (pct); Method: X-Ray Fluorescence (XRF); Lower detection limit = 0.01 pct; Upper detection limit = 100 pct; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. Note: the reported values may be slightly above or below 100% due to instrumental error. (Source: Alaska Division of Geological & Geophysical Surveys and University of Alaska Fairbanks, Department of Geology & Geophysics.)

    Range of values
    Minimum:96.6
    Maximum:101.79
    Units:percent

    Ag_ppm
    Silver values measured in parts per million (ppm); Method: X-Ray Fluorescence (XRF); Lower detection limit = 10 ppm; Upper detection limit = 10000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Alaska Division of Geological & Geophysical Surveys and University of Alaska Fairbanks, Department of Geology & Geophysics.)

    ValueDefinition
    -1Below detection limit.

    Range of values
    Minimum:122
    Maximum:122
    Units:parts per million

    As_ppm
    Arsenic values measured in parts per million (ppm); Method: X-Ray Fluorescence (XRF); Lower detection limit = 4 ppm; Upper detection limit = 750000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. Note: the reported values may be below instrumentation detection limits. (Source: Alaska Division of Geological & Geophysical Surveys and University of Alaska Fairbanks, Department of Geology & Geophysics.)

    ValueDefinition
    -1Below detection limit.

    Range of values
    Minimum:0.11
    Maximum:301
    Units:parts per million

    Bi_ppm
    Bismuth values measured in parts per million (ppm); Method: X-Ray Fluorescence (XRF); Lower detection limit = 2 ppm; Upper detection limit = 750000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Alaska Division of Geological & Geophysical Surveys and University of Alaska Fairbanks, Department of Geology & Geophysics.)

    ValueDefinition
    -1Below detection limit.

    Range of values
    Minimum:32.5
    Maximum:256
    Units:parts per million

    Cr_ppm
    Chromium values measured in parts per million (ppm); Method: X-Ray Fluorescence (XRF); Lower detection limit = 30 ppm; Upper detection limit = 750000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Alaska Division of Geological & Geophysical Surveys and University of Alaska Fairbanks, Department of Geology & Geophysics.)

    ValueDefinition
    -1Below detection limit.

    Range of values
    Minimum:39.6
    Maximum:421
    Units:parts per million

    Cu_ppm
    Copper values measured in parts per million (ppm); Method: X-Ray Fluorescence (XRF); Lower detection limit = 7 ppm; Upper detection limit = 750000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. Note: the reported values may be below instrumentation detection limits. (Source: Alaska Division of Geological & Geophysical Surveys and University of Alaska Fairbanks, Department of Geology & Geophysics.)

    ValueDefinition
    -1Below detection limit.

    Range of values
    Minimum:0.9
    Maximum:3410
    Units:parts per million

    Ga_ppm
    Gallium values measured in parts per million (ppm); Method: X-Ray Fluorescence (XRF); Lower detection limit = 10 ppm; Upper detection limit = 100000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. Note: the reported values may be below instrumentation detection limits. (Source: Alaska Division of Geological & Geophysical Surveys and University of Alaska Fairbanks, Department of Geology & Geophysics.)

    ValueDefinition
    -1Below detection limit.

    Range of values
    Minimum:8.12
    Maximum:59.7
    Units:parts per million

    Mo_ppm
    Molybdenum values measured in parts per million (ppm); Method: X-Ray Fluorescence (XRF); Lower detection limit = 1 ppm; Upper detection limit = 750000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Alaska Division of Geological & Geophysical Surveys and University of Alaska Fairbanks, Department of Geology & Geophysics.)

    ValueDefinition
    -1Below detection limit.

    Range of values
    Minimum:5.66
    Maximum:142
    Units:parts per million

    Ni_ppm
    Nickel values measured in parts per million (ppm); Method: X-Ray Fluorescence (XRF); Lower detection limit = 7 ppm; Upper detection limit = 750000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Alaska Division of Geological & Geophysical Surveys and University of Alaska Fairbanks, Department of Geology & Geophysics.)

    ValueDefinition
    -1Below detection limit.

    Range of values
    Minimum:25.7
    Maximum:203
    Units:parts per million

    V_ppm
    Vanadium values measured in parts per million (ppm); Method: X-Ray Fluorescence (XRF); Lower detection limit = 25 ppm; Upper detection limit = 750000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Alaska Division of Geological & Geophysical Surveys and University of Alaska Fairbanks, Department of Geology & Geophysics.)

    ValueDefinition
    -1Below detection limit.

    Range of values
    Minimum:83.2
    Maximum:680
    Units:parts per million

    W_ppm
    Tungsten values measured in parts per million (ppm); Method: X-Ray Fluorescence (XRF); Lower detection limit = 8 ppm; Upper detection limit = 750000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. Note: the reported values may be below instrumentation detection limits. (Source: Alaska Division of Geological & Geophysical Surveys and University of Alaska Fairbanks, Department of Geology & Geophysics.)

    ValueDefinition
    -1Below detection limit.

    Range of values
    Minimum:5.8
    Maximum:48
    Units:parts per million

    Zn_ppm
    Zinc values measured in parts per million (ppm); Method: X-Ray Fluorescence (XRF); Lower detection limit = 8 ppm; Upper detection limit = 750000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Alaska Division of Geological & Geophysical Surveys and University of Alaska Fairbanks, Department of Geology & Geophysics.)

    ValueDefinition
    -1Below detection limit.

    Range of values
    Minimum:9.5
    Maximum:2900
    Units:parts per million

    Rb_ppm
    Rubidium values measured in parts per million (ppm); Method: X-Ray Fluorescence (XRF); Lower detection limit = 1 ppm; Upper detection limit = 750000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. Note: the reported values may be below instrumentation detection limits. (Source: Alaska Division of Geological & Geophysical Surveys and University of Alaska Fairbanks, Department of Geology & Geophysics.)

    ValueDefinition
    -1Below detection limit.

    Range of values
    Minimum:0.75
    Maximum:854.15
    Units:parts per million

    Sr_ppm
    Strontium values measured in parts per million (ppm); Method: X-Ray Fluorescence (XRF); Lower detection limit = 1 ppm; Upper detection limit = 750000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Alaska Division of Geological & Geophysical Surveys and University of Alaska Fairbanks, Department of Geology & Geophysics.)

    Range of values
    Minimum:2.55
    Maximum:1616.6
    Units:parts per million

    Y_ppm
    Yttrium values measured in parts per million (ppm); Method: X-Ray Fluorescence (XRF); Lower detection limit = 1 ppm; Upper detection limit = 750000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Alaska Division of Geological & Geophysical Surveys and University of Alaska Fairbanks, Department of Geology & Geophysics.)

    Range of values
    Minimum:3.7
    Maximum:120.6
    Units:parts per million

    Zr_ppm
    Zirconium values measured in parts per million (ppm); Method: X-Ray Fluorescence (XRF); Lower detection limit = 9 ppm; Upper detection limit = 750000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. Note: the reported values may be below instrumentation detection limits. (Source: Alaska Division of Geological & Geophysical Surveys and University of Alaska Fairbanks, Department of Geology & Geophysics.)

    Range of values
    Minimum:7.25
    Maximum:352.75
    Units:parts per million

    Nb_ppm
    Niobium values measured in parts per million (ppm); Method: X-Ray Fluorescence (XRF); Lower detection limit = 1 ppm; Upper detection limit = 750000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. Note: the reported values may be below instrumentation detection limits. (Source: Alaska Division of Geological & Geophysical Surveys and University of Alaska Fairbanks, Department of Geology & Geophysics.)

    Range of values
    Minimum:0.9
    Maximum:49.9
    Units:parts per million

    Ce_ppm
    Cerium values measured in parts per million (ppm); Method: X-Ray Fluorescence (XRF); Lower detection limit = 20 ppm; Upper detection limit = 500000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. Note: the reported values may be below instrumentation detection limits. (Source: Alaska Division of Geological & Geophysical Surveys and University of Alaska Fairbanks, Department of Geology & Geophysics.)

    ValueDefinition
    -1Below detection limit.

    Range of values
    Minimum:7.8
    Maximum:310.9
    Units:parts per million

    Pb_ppm
    Lead values measured in parts per million (ppm); Method: X-Ray Fluorescence (XRF); Lower detection limit = 4 ppm; Upper detection limit = 750000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. Note: the reported values may be below instrumentation detection limits. (Source: Alaska Division of Geological & Geophysical Surveys and University of Alaska Fairbanks, Department of Geology & Geophysics.)

    ValueDefinition
    -4Insufficient sample.

    Range of values
    Minimum:0.3
    Maximum:1016.2
    Units:parts per million

    Th_ppm
    Thorium values measured in parts per million (ppm); Method: X-Ray Fluorescence (XRF); Lower detection limit = 2 ppm; Upper detection limit = 750000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. Note: the reported values may be below instrumentation detection limits. (Source: Alaska Division of Geological & Geophysical Surveys and University of Alaska Fairbanks, Department of Geology & Geophysics.)

    ValueDefinition
    -1Below detection limit.

    Range of values
    Minimum:0.3
    Maximum:199.3
    Units:parts per million

    U_ppm
    Uranium values measured in parts per million (ppm); Method: X-Ray Fluorescence (XRF); Lower detection limit = 1 ppm; Upper detection limit = 750000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. Note: the reported values may be below instrumentation detection limits. (Source: Alaska Division of Geological & Geophysical Surveys and University of Alaska Fairbanks, Department of Geology & Geophysics.)

    ValueDefinition
    -1Below detection limit.

    Range of values
    Minimum:0.2
    Maximum:47.6
    Units:parts per million

    Sn_ppm
    Tin values measured in parts per million (ppm); Method: X-Ray Fluorescence (XRF); Lower detection limit = 4 ppm; Upper detection limit = 750000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. Note: the reported values may be below instrumentation detection limits. (Source: Alaska Division of Geological & Geophysical Surveys and University of Alaska Fairbanks, Department of Geology & Geophysics.)

    ValueDefinition
    -1Below detection limit.

    Range of values
    Minimum:0.3
    Maximum:2483
    Units:parts per million

    rdf2013-5-stream-sed-trace-element-ree.csv, rdf2013-5-stream-sed-trace-element-ree-limits.csv
    Trace-element and rare-earth-element analysis of stream-sediment and soil samples. (Source: Alaska Division of Geological & Geophysical Surveys)

    Station
    Label assigned to identify the field location where a sample was collected. For this project a unique station value was created for all visited sites that yielded samples. However, the "Station" identifier does not uniquely identify each sample; in some cases, multiple samples were collected from the same site for different purposes. In other cases, a station number may be duplicated because the lab provided multiple analyses for a particular sample. (Source: Alaska Division of Geological & Geophysical Surveys)

    Generic example of a station identifier: 20YYAAA9999X: YY=last two digits of year, AAA=geologist's initials (one to three characters), 9999=unique station number, X= optional alpha character which indicates that multiple samples were collected at a given location or that multiple observations were recorded in the project database. The initials used by the geologists who collected samples for this project are: AT = Amy L. Tuzzolino; BW = William (aka Bill) Wylie; LF = Larry Freeman; RN = Rainer Newberry; MJB = Michael J. Blessington; MBW = Melanie B. Werdon; CW = T. Colby Wright; and EB = Erik N. Bachmann.

    Latitude
    Latitude, NAD27 (Source: Alaska Division of Geological & Geophysical Surveys)

    Range of values
    Minimum:65.627367
    Maximum:66.794508
    Units:decimal degrees

    Longitude
    Longitude, NAD27 (Source: Alaska Division of Geological & Geophysical Surveys)

    Range of values
    Minimum:-151.717019
    Maximum:-149.925098
    Units:decimal degrees

    Weight_kg
    Sample weight in kilograms (Source: Alaska Division of Geological & Geophysical Surveys and University of Alaska Fairbanks, Department of Geology & Geophysics)

    Range of values
    Minimum:0.37
    Maximum:4.23
    Units:kilograms

    Mesh_Size
    Mesh size used to sieve stream sediment and soil samples. (Source: Alaska Division of Geological & Geophysical Surveys)

    ValueDefinition
    -35The sample was sieved to a particle size of less than 500 microns prior to analysis.
    -80The sample was sieved to a particle size of less than 180 microns prior to analysis

    Stream_W
    The estimated average width of stream at the sample site. (Source: Alaska Division of Geological & Geophysical Surveys)

    ValueDefinition
    NULLBlank (NULL) field values indicate that this data was not recorded by the sample collector.

    Range of values
    Minimum:0.1
    Maximum:60
    Units:meters

    Stream_D
    The estimated depth of stream at the sample site. (Source: Alaska Division of Geological & Geophysical Surveys)

    ValueDefinition
    NULLBlank (NULL) field values indicate that this data was not recorded by the sample collector.

    Range of values
    Minimum:0.1
    Maximum:3
    Units:meters

    Stream_Spd
    Qualitative description of the stream flow rate and stream channel morphology at the field station where the sample was collected.. (Source: Alaska Division of Geological & Geophysical Surveys)

    ValueDefinition
    NULLBlank (NULL) field values indicate that this data was not recorded by the sample collector.
    stagnantno apparent current, bed is composed of organics, silt or sand, and banks are composed of silt and organics, no gravel is present.
    slowslow current, few riffles, bed and banks are composed of gravel and sand, minor cobbles and silt, organics may be present.
    swiftfast moving water, many riffles, bed and bank are composed of cobbles and gravel with minor sand.
    tumblingstep-wise flows with plunges and pools, bed and banks are composed of boulders and cobbles with minor gravel and finer sediment.
    slow-stagnantvery slow current with stagnant pools, bed is comprised of sand and banks are composed of silt; organics and a small amount of gravel may be present.
    swift-slowvaried flow rate and channel morphology, bed and banks are composed of gravel and sand, banks are composed of sand, silt and minor gravel; cobbles and organics may be present.
    tumbling-swift-slowvaried flow rate and channel morphology with intermittent step-wise plunges and pools, bed and banks are variable and may be composed of boulders, cobbles, gravel, sand, or silt organics may be present.
    tumbling-slowslow current with few riffles and intermittent step-wise plunges and pools, bed and banks are variable and may be composed of cobbles, gravel, sand, or silt, organics may be present.
    tumbling-swiftfast moving water with many riffles and intermittent step-wise flows with plunges and pools, bed and banks are composed of boulders and cobbles with minor gravel and finer sediment.

    Stream_Ord
    Relative magnitude of the stream based on its position within the tributary hierarchy of the drainage basin.. (Source: Alaska Division of Geological & Geophysical Surveys)

    ValueDefinition
    NULLBlank (NULL) field values indicate that this data was not recorded by the sample collector.

    Formal codeset
    Codeset Name:Numeric values were assigned according to Strahler, A. N. (1957) classification system.
    Codeset Source:Strahler, A. N. (1957), Quantitative analysis of watershed geomorphology: Transactions of the American Geophysical Union Vol 38, p. 913-920.

    Stream_Sit
    The type of material that forms the bed and banks of the sampled stream channel.. (Source: Alaska Division of Geological & Geophysical Surveys)

    ValueDefinition
    NULLBlank (NULL) field values indicate that this data was not recorded by the sample collector.
    alluviumNatural unconsolidated aggregate deposited by rivers, streams and creeks.
    colluviumNatural unconsolidated aggregate resulting from down slope movement of loose rocks and soil.
    bedrockSolid in situ rock and boulders that have not been transported.

    Grain_Size
    Estimated classification of the size of material that is the source of the sample. (Source: Alaska Division of Geological & Geophysical Surveys)

    ValueDefinition
    NULLBlank (NULL) field values indicate that this data was not recorded by the sample collector.

    Formal codeset
    Codeset Name:Unified Soil Classification System (USCS)
    Codeset Source:United States Army Engineer Waterways Experiment Station (1960), The Unified Soil Classification System: Technical Memorandum No. 3-357, U.S. Army Engineer Waterways Experiment Station, Vicksburg, MS.

    Source
    Description of depositional environment of the specific sample site. (Source: Alaska Division of Geological & Geophysical Surveys)

    ValueDefinition
    NULLBlank (NULL) field values indicate that this data was not recorded by the sample collector.
    point-barGravel or sand deposited at the downstream end of a gravel bar.
    boulder/log-eddyGravel or sand deposited downstream of an obstruction such as a log or boulder.
    gravel-armorSediment trapped below pebble or cobble pavement at the leading edge of a gravel bar.
    moss-matSand or gravel trapped in a moss mat in the main channel or bank of a creek.
    plunge-poolSand or gravel deposited at the edge of a pool below a water fall.

    Num_Sites
    Number of sample sites at the station. (Source: Alaska Division of Geological & Geophysical Surveys)

    ValueDefinition
    NULLBlank (NULL) field values indicate that this data was not recorded by the sample collector.

    Range of values
    Minimum:1
    Maximum:6

    Dist_Samp
    The distance between the creek bed and the sample site. (Source: Alaska Division of Geological & Geophysical Surveys)

    ValueDefinition
    NULLBlank (NULL) field values indicate that this data was not recorded by the sample collector.

    Range of values
    Minimum:0.25
    Maximum:42
    Units:meters

    Sed_Colors
    Primary and, if applicable, secondary color of chemical or biogenic precipitate on the stream bed material qualitatively assigned by the sampler, no color palate or guide is used.. (Source: Alaska Division of Geological & Geophysical Surveys)

    ValueDefinition
    NULLBlank (NULL) field values indicate that this data was not recorded by the sample collector.

    The color selection values used in this table are: "black"; "black, brown"; "black, orange"; "black, white"; "brown"; "brown, black"; "brown, orange"; "brown, red"; "brown, white"; "brown, yellow"; "orange"; "orange, brown"; "orange, red"; "red, brown"; "red, orange"; "white ";

    Intensity
    Intensity of the chemical or biogenic precipitate on the stream bed material qualitatively assigned by the sampler. (Source: Alaska Division of Geological & Geophysical Surveys)

    ValueDefinition
    NULLBlank (NULL) field values indicate that this data was not recorded by the sample collector.
    weakPrecipitate binds otherwise unconsolidated deposits.
    heavyObscures the texture and color of the stream bed materials.
    moderateObscures the color of the stream bed materials.

    Description
    Description of the sample. (Source: Alaska Division of Geological & Geophysical Surveys)

    ValueDefinition
    NULLBlank (NULL) field values indicate that this data was not recorded by the sample collector.

    Characters 1 to 254 of a brief sample and/or station description.

    Ba_ppm_1
    Barium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Mass Spectroscopy (ICP-MS), Lithium metaborate fusion - HNO3-HCl dissolution; Lower detection limit = 0.5 ppm; Upper detection limit = 10000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Alaska Division of Geological & Geophysical Surveys and University of Alaska Fairbanks, Department of Geology & Geophysics.)

    Range of values
    Minimum:115.5
    Maximum:1905
    Units:parts per million

    Ce_ppm
    Cerium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Mass Spectroscopy (ICP-MS), Lithium metaborate fusion - HNO3-HCl dissolution; Lower detection limit = 0.5 ppm; Upper detection limit = 10000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Alaska Division of Geological & Geophysical Surveys and University of Alaska Fairbanks, Department of Geology & Geophysics.)

    Range of values
    Minimum:32.6
    Maximum:3070
    Units:parts per million

    Cr_ppm_1
    Chromium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Mass Spectroscopy (ICP-MS), Lithium metaborate fusion - HNO3-HCl dissolution; Lower detection limit = 10 ppm; Upper detection limit = 10000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Alaska Division of Geological & Geophysical Surveys and University of Alaska Fairbanks, Department of Geology & Geophysics.)

    Range of values
    Minimum:10
    Maximum:2900
    Units:parts per million

    Cs_ppm
    Cesium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Mass Spectroscopy (ICP-MS), Lithium metaborate fusion - HNO3-HCl dissolution; Lower detection limit = 0.01 ppm; Upper detection limit = 10000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Alaska Division of Geological & Geophysical Surveys and University of Alaska Fairbanks, Department of Geology & Geophysics.)

    Range of values
    Minimum:2.12
    Maximum:142
    Units:parts per million

    Dy_ppm
    Dysprosium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Mass Spectroscopy (ICP-MS), Lithium metaborate fusion - HNO3-HCl dissolution; Lower detection limit = 0.05 ppm; Upper detection limit = 1000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Alaska Division of Geological & Geophysical Surveys and University of Alaska Fairbanks, Department of Geology & Geophysics.)

    Range of values
    Minimum:2.56
    Maximum:158
    Units:parts per million

    Er_ppm
    Erbium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Mass Spectroscopy (ICP-MS), Lithium metaborate fusion - HNO3-HCl dissolution; Lower detection limit = 0.03 ppm; Upper detection limit = 1000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Alaska Division of Geological & Geophysical Surveys and University of Alaska Fairbanks, Department of Geology & Geophysics.)

    Range of values
    Minimum:1.56
    Maximum:100
    Units:parts per million

    Eu_ppm
    Europium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Mass Spectroscopy (ICP-MS), Lithium metaborate fusion - HNO3-HCl dissolution; Lower detection limit = 0.03 ppm; Upper detection limit = 1000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Alaska Division of Geological & Geophysical Surveys and University of Alaska Fairbanks, Department of Geology & Geophysics.)

    Range of values
    Minimum:0.17
    Maximum:5.47
    Units:parts per million

    Ga_ppm_1
    Gallium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Mass Spectroscopy (ICP-MS), Lithium metaborate fusion - HNO3-HCl dissolution; Lower detection limit = 0.1 ppm; Upper detection limit = 1000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Alaska Division of Geological & Geophysical Surveys and University of Alaska Fairbanks, Department of Geology & Geophysics.)

    Range of values
    Minimum:10.7
    Maximum:117
    Units:parts per million

    Gd_ppm
    Gadolinium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Mass Spectroscopy (ICP-MS), Lithium metaborate fusion - HNO3-HCl dissolution; Lower detection limit = 0.05 ppm; Upper detection limit = 1000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Alaska Division of Geological & Geophysical Surveys and University of Alaska Fairbanks, Department of Geology & Geophysics.)

    Range of values
    Minimum:2.75
    Maximum:158.5
    Units:parts per million

    Hf_ppm
    Hafnium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Mass Spectroscopy (ICP-MS), Lithium metaborate fusion - HNO3-HCl dissolution; Lower detection limit = 0.2 ppm; Upper detection limit = 10000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Alaska Division of Geological & Geophysical Surveys and University of Alaska Fairbanks, Department of Geology & Geophysics.)

    Range of values
    Minimum:2.4
    Maximum:150
    Units:parts per million

    Ho_ppm
    Holmium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Mass Spectroscopy (ICP-MS), Lithium metaborate fusion - HNO3-HCl dissolution; Lower detection limit = 0.01 ppm; Upper detection limit = 1000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Alaska Division of Geological & Geophysical Surveys and University of Alaska Fairbanks, Department of Geology & Geophysics.)

    Range of values
    Minimum:0.51
    Maximum:32.4
    Units:parts per million

    La_ppm_1
    Lanthanum values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Mass Spectroscopy (ICP-MS), Lithium metaborate fusion - HNO3-HCl dissolution; Lower detection limit = 0.5 ppm; Upper detection limit = 10000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Alaska Division of Geological & Geophysical Surveys and University of Alaska Fairbanks, Department of Geology & Geophysics.)

    Range of values
    Minimum:14.9
    Maximum:1515
    Units:parts per million

    Lu_ppm
    Lutetium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Mass Spectroscopy (ICP-MS), Lithium metaborate fusion - HNO3-HCl dissolution; Lower detection limit = 0.01 ppm; Upper detection limit = 1000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Alaska Division of Geological & Geophysical Surveys and University of Alaska Fairbanks, Department of Geology & Geophysics.)

    Range of values
    Minimum:0.28
    Maximum:15.25
    Units:parts per million

    Nb_ppm
    Niobium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Mass Spectroscopy (ICP-MS), Lithium metaborate fusion - HNO3-HCl dissolution; Lower detection limit = 0.2 ppm; Upper detection limit = 10000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Alaska Division of Geological & Geophysical Surveys and University of Alaska Fairbanks, Department of Geology & Geophysics.)

    Range of values
    Minimum:6.8
    Maximum:158.5
    Units:parts per million

    Nd_ppm
    Neodymium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Mass Spectroscopy (ICP-MS), Lithium metaborate fusion - HNO3-HCl dissolution; Lower detection limit = 0.1 ppm; Upper detection limit = 10000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Alaska Division of Geological & Geophysical Surveys and University of Alaska Fairbanks, Department of Geology & Geophysics.)

    Range of values
    Minimum:12.7
    Maximum:1130
    Units:parts per million

    Pr_ppm
    Praseodymium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Mass Spectroscopy (ICP-MS), Lithium metaborate fusion - HNO3-HCl dissolution; Lower detection limit = 0.03 ppm; Upper detection limit = 1000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Alaska Division of Geological & Geophysical Surveys and University of Alaska Fairbanks, Department of Geology & Geophysics.)

    Range of values
    Minimum:3.71
    Maximum:334
    Units:parts per million

    Rb_ppm
    Rubidium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Mass Spectroscopy (ICP-MS), Lithium metaborate fusion - HNO3-HCl dissolution; Lower detection limit = 0.2 ppm; Upper detection limit = 10000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Alaska Division of Geological & Geophysical Surveys and University of Alaska Fairbanks, Department of Geology & Geophysics.)

    Range of values
    Minimum:36.4
    Maximum:898
    Units:parts per million

    Sm_ppm
    Samarium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Mass Spectroscopy (ICP-MS), Lithium metaborate fusion - HNO3-HCl dissolution; Lower detection limit = 0.03 ppm; Upper detection limit = 1000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Alaska Division of Geological & Geophysical Surveys and University of Alaska Fairbanks, Department of Geology & Geophysics.)

    Range of values
    Minimum:2.89
    Maximum:200
    Units:parts per million

    Sn_ppm
    Tin values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Mass Spectroscopy (ICP-MS), Lithium metaborate fusion - HNO3-HCl dissolution; Lower detection limit = 1 ppm; Upper detection limit = 10000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Alaska Division of Geological & Geophysical Surveys and University of Alaska Fairbanks, Department of Geology & Geophysics.)

    ValueDefinition
    -1Below detection limit.

    Range of values
    Minimum:1
    Maximum:1635
    Units:parts per million

    Sr_ppm_1
    Strontium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Mass Spectroscopy (ICP-MS), Lithium metaborate fusion - HNO3-HCl dissolution; Lower detection limit = 0.1 ppm; Upper detection limit = 10000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Alaska Division of Geological & Geophysical Surveys and University of Alaska Fairbanks, Department of Geology & Geophysics.)

    Range of values
    Minimum:25.4
    Maximum:761
    Units:parts per million

    Ta_ppm
    Tantalum values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Mass Spectroscopy (ICP-MS), Lithium metaborate fusion - HNO3-HCl dissolution; Lower detection limit = 0.1 ppm; Upper detection limit = 10000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Alaska Division of Geological & Geophysical Surveys and University of Alaska Fairbanks, Department of Geology & Geophysics.)

    Range of values
    Minimum:0.5
    Maximum:35.6
    Units:parts per million

    Tb_ppm
    Terbium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Mass Spectroscopy (ICP-MS), Lithium metaborate fusion - HNO3-HCl dissolution; Lower detection limit = 0.01 ppm; Upper detection limit = 1000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Alaska Division of Geological & Geophysical Surveys and University of Alaska Fairbanks, Department of Geology & Geophysics.)

    Range of values
    Minimum:0.44
    Maximum:25.5
    Units:parts per million

    Th_ppm_1
    Thorium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Mass Spectroscopy (ICP-MS), Lithium metaborate fusion - HNO3-HCl dissolution; Lower detection limit = 0.05 ppm; Upper detection limit = 1000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Alaska Division of Geological & Geophysical Surveys and University of Alaska Fairbanks, Department of Geology & Geophysics.)

    Range of values
    Minimum:5.03
    Maximum:792
    Units:parts per million

    Tl_ppm_1
    Thallium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Mass Spectroscopy (ICP-MS), Lithium metaborate fusion - HNO3-HCl dissolution; Lower detection limit = 0.5 ppm; Upper detection limit = 1000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Alaska Division of Geological & Geophysical Surveys and University of Alaska Fairbanks, Department of Geology & Geophysics.)

    ValueDefinition
    -1Below detection limit.

    Range of values
    Minimum:0.5
    Maximum:4.3
    Units:parts per million

    Tm_ppm
    Thulium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Mass Spectroscopy (ICP-MS), Lithium metaborate fusion - HNO3-HCl dissolution; Lower detection limit = 0.01 ppm; Upper detection limit = 1000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Alaska Division of Geological & Geophysical Surveys and University of Alaska Fairbanks, Department of Geology & Geophysics.)

    Range of values
    Minimum:0.25
    Maximum:15.8
    Units:parts per million

    U_ppm_1
    Uranium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Mass Spectroscopy (ICP-MS), Lithium metaborate fusion - HNO3-HCl dissolution; Lower detection limit = 0.05 ppm; Upper detection limit = 1000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Alaska Division of Geological & Geophysical Surveys and University of Alaska Fairbanks, Department of Geology & Geophysics.)

    Range of values
    Minimum:1.75
    Maximum:727
    Units:parts per million

    V_ppm_1
    Vanadium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Mass Spectroscopy (ICP-MS), Lithium metaborate fusion - HNO3-HCl dissolution; Lower detection limit = 5 ppm; Upper detection limit = 10000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Alaska Division of Geological & Geophysical Surveys and University of Alaska Fairbanks, Department of Geology & Geophysics.)

    Range of values
    Minimum:6
    Maximum:272
    Units:parts per million

    W_ppm_1
    Tungsten values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Mass Spectroscopy (ICP-MS), Lithium metaborate fusion - HNO3-HCl dissolution; Lower detection limit = 1 ppm; Upper detection limit = 10000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Alaska Division of Geological & Geophysical Surveys and University of Alaska Fairbanks, Department of Geology & Geophysics.)

    Range of values
    Minimum:1
    Maximum:521
    Units:parts per million

    Y_ppm
    Yttrium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Mass Spectroscopy (ICP-MS), Lithium metaborate fusion - HNO3-HCl dissolution; Lower detection limit = 0.5 ppm; Upper detection limit = 10000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Alaska Division of Geological & Geophysical Surveys and University of Alaska Fairbanks, Department of Geology & Geophysics.)

    Range of values
    Minimum:14.5
    Maximum:893
    Units:parts per million

    Yb_ppm
    Ytterbium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Mass Spectroscopy (ICP-MS), Lithium metaborate fusion - HNO3-HCl dissolution; Lower detection limit = 0.03 ppm; Upper detection limit = 1000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Alaska Division of Geological & Geophysical Surveys and University of Alaska Fairbanks, Department of Geology & Geophysics.)

    Range of values
    Minimum:1.72
    Maximum:98.1
    Units:parts per million

    Zr_ppm
    Zirconium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Mass Spectroscopy (ICP-MS), Lithium metaborate fusion - HNO3-HCl dissolution; Lower detection limit = 2 ppm; Upper detection limit = 10000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Alaska Division of Geological & Geophysical Surveys and University of Alaska Fairbanks, Department of Geology & Geophysics.)

    Range of values
    Minimum:69
    Maximum:5720
    Units:parts per million

    Ag_ppm
    Silver values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy (ICP-AES), HF-HNO3-HClO4-HCl; Lower detection limit = 0.5 ppm; Upper detection limit = 100 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Alaska Division of Geological & Geophysical Surveys and University of Alaska Fairbanks, Department of Geology & Geophysics.)

    ValueDefinition
    -1Below detection limit.

    Range of values
    Minimum:0.5
    Maximum:2.9
    Units:parts per million

    Al_pct
    Aluminum values measured in percent (pct); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy (ICP-AES), HF-HNO3-HClO4-HCl; Lower detection limit = 0.01 pct; Upper detection limit = 50 pct; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Alaska Division of Geological & Geophysical Surveys and University of Alaska Fairbanks, Department of Geology & Geophysics.)

    Range of values
    Minimum:3.8
    Maximum:11.1
    Units:percent

    As_ppm
    Arsenic values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy (ICP-AES), HF-HNO3-HClO4-HCl; Lower detection limit = 5 ppm; Upper detection limit = 10000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Alaska Division of Geological & Geophysical Surveys and University of Alaska Fairbanks, Department of Geology & Geophysics.)

    ValueDefinition
    -1Below detection limit.

    Range of values
    Minimum:5
    Maximum:1920
    Units:parts per million

    Ba_ppm_2
    Barium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy (ICP-AES), HF-HNO3-HClO4-HCl; Lower detection limit = 10 ppm; Upper detection limit = 10000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Alaska Division of Geological & Geophysical Surveys and University of Alaska Fairbanks, Department of Geology & Geophysics.)

    Range of values
    Minimum:120
    Maximum:1980
    Units:parts per million

    Be_ppm
    Beryllium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy (ICP-AES), HF-HNO3-HClO4-HCl; Lower detection limit = 0.5 ppm; Upper detection limit = 1000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Alaska Division of Geological & Geophysical Surveys and University of Alaska Fairbanks, Department of Geology & Geophysics.)

    Range of values
    Minimum:0.9
    Maximum:28
    Units:parts per million

    Bi_ppm
    Bismuth values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy (ICP-AES), HF-HNO3-HClO4-HCl; Lower detection limit = 2 ppm; Upper detection limit = 10000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Alaska Division of Geological & Geophysical Surveys and University of Alaska Fairbanks, Department of Geology & Geophysics.)

    ValueDefinition
    -1Below detection limit.

    Range of values
    Minimum:2
    Maximum:44
    Units:parts per million

    Ca_pct
    Calcium values measured in percent (pct); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy (ICP-AES), HF-HNO3-HClO4-HCl; Lower detection limit = 0.01 pct; Upper detection limit = 50 pct; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Alaska Division of Geological & Geophysical Surveys and University of Alaska Fairbanks, Department of Geology & Geophysics.)

    Range of values
    Minimum:0.04
    Maximum:5.09
    Units:percent

    Cd_ppm
    Cadmium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy (ICP-AES), HF-HNO3-HClO4-HCl; Lower detection limit = 0.5 ppm; Upper detection limit = 500 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Alaska Division of Geological & Geophysical Surveys and University of Alaska Fairbanks, Department of Geology & Geophysics.)

    ValueDefinition
    -1Below detection limit.

    Range of values
    Minimum:0.5
    Maximum:3.3
    Units:parts per million

    Co_ppm
    Cobalt values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy (ICP-AES), HF-HNO3-HClO4-HCl; Lower detection limit = 1 ppm; Upper detection limit = 10000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Alaska Division of Geological & Geophysical Surveys and University of Alaska Fairbanks, Department of Geology & Geophysics.)

    Range of values
    Minimum:1
    Maximum:292
    Units:parts per million

    Cr_ppm_2
    Chromium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy (ICP-AES), HF-HNO3-HClO4-HCl; Lower detection limit = 1 ppm; Upper detection limit = 10000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Alaska Division of Geological & Geophysical Surveys and University of Alaska Fairbanks, Department of Geology & Geophysics.)

    Range of values
    Minimum:5
    Maximum:4400
    Units:parts per million

    Cu_ppm
    Copper values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy (ICP-AES), HF-HNO3-HClO4-HCl; Lower detection limit = 1 ppm; Upper detection limit = 10000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Alaska Division of Geological & Geophysical Surveys and University of Alaska Fairbanks, Department of Geology & Geophysics.)

    Range of values
    Minimum:1
    Maximum:178
    Units:parts per million

    Fe_pct
    Iron values measured in percent (pct); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy (ICP-AES), HF-HNO3-HClO4-HCl; Lower detection limit = 0.01 pct; Upper detection limit = 50 pct; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Alaska Division of Geological & Geophysical Surveys and University of Alaska Fairbanks, Department of Geology & Geophysics.)

    Range of values
    Minimum:0.77
    Maximum:11.2
    Units:percent

    Ga_ppm_2
    Gallium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy (ICP-AES), HF-HNO3-HClO4-HCl; Lower detection limit = 10 ppm; Upper detection limit = 10000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Alaska Division of Geological & Geophysical Surveys and University of Alaska Fairbanks, Department of Geology & Geophysics.)

    Range of values
    Minimum:10
    Maximum:110
    Units:parts per million

    K_pct
    Potassium values measured in percent (pct); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy (ICP-AES), HF-HNO3-HClO4-HCl; Lower detection limit = 0.01 pct; Upper detection limit = 10 pct; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Alaska Division of Geological & Geophysical Surveys and University of Alaska Fairbanks, Department of Geology & Geophysics.)

    Range of values
    Minimum:0.68
    Maximum:4.54
    Units:percent

    La_ppm_2
    Lanthanum values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy (ICP-AES), HF-HNO3-HClO4-HCl; Lower detection limit = 10 ppm; Upper detection limit = 10000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Alaska Division of Geological & Geophysical Surveys and University of Alaska Fairbanks, Department of Geology & Geophysics.)

    Range of values
    Minimum:10
    Maximum:1700
    Units:parts per million

    Mg_pct
    Magnesium values measured in percent (pct); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy (ICP-AES), HF-HNO3-HClO4-HCl; Lower detection limit = 0.01 pct; Upper detection limit = 50 pct; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Alaska Division of Geological & Geophysical Surveys and University of Alaska Fairbanks, Department of Geology & Geophysics.)

    Range of values
    Minimum:0.05
    Maximum:3.2
    Units:percent

    Mn_ppm
    Manganese values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy (ICP-AES), HF-HNO3-HClO4-HCl; Lower detection limit = 5 ppm; Upper detection limit = 100000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Alaska Division of Geological & Geophysical Surveys and University of Alaska Fairbanks, Department of Geology & Geophysics.)

    Range of values
    Minimum:88
    Maximum:24100
    Units:parts per million

    Mo_ppm
    Molybdenum values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy (ICP-AES), HF-HNO3-HClO4-HCl; Lower detection limit = 1 ppm; Upper detection limit = 10000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Alaska Division of Geological & Geophysical Surveys and University of Alaska Fairbanks, Department of Geology & Geophysics.)

    ValueDefinition
    -1Below detection limit.

    Range of values
    Minimum:1
    Maximum:29
    Units:parts per million

    Na_pct
    Sodium values measured in percent (pct); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy (ICP-AES), HF-HNO3-HClO4-HCl; Lower detection limit = 0.01 pct; Upper detection limit = 10 pct; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Alaska Division of Geological & Geophysical Surveys and University of Alaska Fairbanks, Department of Geology & Geophysics.)

    Range of values
    Minimum:0.09
    Maximum:3.17
    Units:percent

    Ni_ppm
    Nickel values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy (ICP-AES), HF-HNO3-HClO4-HCl; Lower detection limit = 1 ppm; Upper detection limit = 10000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Alaska Division of Geological & Geophysical Surveys and University of Alaska Fairbanks, Department of Geology & Geophysics.)

    ValueDefinition
    -1Below detection limit.

    Range of values
    Minimum:2
    Maximum:365
    Units:parts per million

    P_ppm
    Phosphorus values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy (ICP-AES), HF-HNO3-HClO4-HCl; Lower detection limit = 10 ppm; Upper detection limit = 10000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Alaska Division of Geological & Geophysical Surveys and University of Alaska Fairbanks, Department of Geology & Geophysics.)

    Range of values
    Minimum:70
    Maximum:3350
    Units:parts per million

    Pb_ppm
    Lead values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy (ICP-AES), HF-HNO3-HClO4-HCl; Lower detection limit = 2 ppm; Upper detection limit = 10000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Alaska Division of Geological & Geophysical Surveys and University of Alaska Fairbanks, Department of Geology & Geophysics.)

    Range of values
    Minimum:8
    Maximum:189
    Units:parts per million

    S_pct
    Sulfur values measured in percent (pct); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy (ICP-AES), HF-HNO3-HClO4-HCl; Lower detection limit = 0.01 pct; Upper detection limit = 10 pct; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Alaska Division of Geological & Geophysical Surveys and University of Alaska Fairbanks, Department of Geology & Geophysics.)

    ValueDefinition
    -1Below detection limit.

    Range of values
    Minimum:0.01
    Maximum:0.33
    Units:percent

    Sb_ppm
    Antimony values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy (ICP-AES), HF-HNO3-HClO4-HCl; Lower detection limit = 5 ppm; Upper detection limit = 10000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Alaska Division of Geological & Geophysical Surveys and University of Alaska Fairbanks, Department of Geology & Geophysics.)

    ValueDefinition
    -1Below detection limit.

    Range of values
    Minimum:5
    Maximum:169
    Units:parts per million

    Sc_ppm
    Scandium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy (ICP-AES), HF-HNO3-HClO4-HCl; Lower detection limit = 1 ppm; Upper detection limit = 10000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Alaska Division of Geological & Geophysical Surveys and University of Alaska Fairbanks, Department of Geology & Geophysics.)

    Range of values
    Minimum:2
    Maximum:33
    Units:parts per million

    Sr_ppm_2
    Strontium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy (ICP-AES), HF-HNO3-HClO4-HCl; Lower detection limit = 1 ppm; Upper detection limit = 10000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Alaska Division of Geological & Geophysical Surveys and University of Alaska Fairbanks, Department of Geology & Geophysics.)

    Range of values
    Minimum:23
    Maximum:829
    Units:parts per million

    Th_ppm_2
    Thorium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy (ICP-AES), HF-HNO3-HClO4-HCl; Lower detection limit = 20 ppm; Upper detection limit = 10000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Alaska Division of Geological & Geophysical Surveys and University of Alaska Fairbanks, Department of Geology & Geophysics.)

    ValueDefinition
    -1Below detection limit.

    Range of values
    Minimum:20
    Maximum:960
    Units:parts per million

    Ti_pct
    Titanium values measured in percent (pct); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy (ICP-AES), HF-HNO3-HClO4-HCl; Lower detection limit = 0.01 pct; Upper detection limit = 10 pct; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Alaska Division of Geological & Geophysical Surveys and University of Alaska Fairbanks, Department of Geology & Geophysics.)

    Range of values
    Minimum:0.05
    Maximum:1.53
    Units:percent

    Tl_ppm_2
    Thallium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy (ICP-AES), HF-HNO3-HClO4-HCl; Lower detection limit = 10 ppm; Upper detection limit = 10000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Alaska Division of Geological & Geophysical Surveys and University of Alaska Fairbanks, Department of Geology & Geophysics.)

    ValueDefinition
    -1Below detection limit.

    Range of values
    Minimum:10
    Maximum:10
    Units:parts per million

    U_ppm_2
    Uranium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy (ICP-AES), HF-HNO3-HClO4-HCl; Lower detection limit = 10 ppm; Upper detection limit = 10000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Alaska Division of Geological & Geophysical Surveys and University of Alaska Fairbanks, Department of Geology & Geophysics.)

    ValueDefinition
    -1Below detection limit.

    Range of values
    Minimum:10
    Maximum:810
    Units:parts per million

    V_ppm_2
    Vanadium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy (ICP-AES), HF-HNO3-HClO4-HCl; Lower detection limit = 1 ppm; Upper detection limit = 10000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Alaska Division of Geological & Geophysical Surveys and University of Alaska Fairbanks, Department of Geology & Geophysics.)

    Range of values
    Minimum:7
    Maximum:237
    Units:parts per million

    W_ppm_2
    Tungsten values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy (ICP-AES), HF-HNO3-HClO4-HCl; Lower detection limit = 10 ppm; Upper detection limit = 10000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Alaska Division of Geological & Geophysical Surveys and University of Alaska Fairbanks, Department of Geology & Geophysics.)

    ValueDefinition
    -1Below detection limit.

    Range of values
    Minimum:10
    Maximum:280
    Units:parts per million

    Zn_ppm
    Zinc values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy (ICP-AES), HF-HNO3-HClO4-HCl; Lower detection limit = 2 ppm; Upper detection limit = 10000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Alaska Division of Geological & Geophysical Surveys and University of Alaska Fairbanks, Department of Geology & Geophysics.)

    Range of values
    Minimum:17
    Maximum:743
    Units:parts per million

    Au_ppm
    Gold values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy (ICP-AES), Fire assay - aqua regia; Lower detection limit = 0.001 ppm; Upper detection limit = 10 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Alaska Division of Geological & Geophysical Surveys and University of Alaska Fairbanks, Department of Geology & Geophysics.)

    ValueDefinition
    -1Below detection limit.

    Range of values
    Minimum:0.001
    Maximum:0.182
    Units:parts per million

    Pt_ppm
    Platinum values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy (ICP-AES), Fire assay - aqua regia; Lower detection limit = 0.005 ppm; Upper detection limit = 10 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Alaska Division of Geological & Geophysical Surveys and University of Alaska Fairbanks, Department of Geology & Geophysics.)

    ValueDefinition
    -1Below detection limit.
    NULLBlank (NULL) field values indicate that this chemical species was not requested or not analyzed.

    Range of values
    Minimum:0.005
    Maximum:0.032
    Units:parts per million

    Pd_ppm
    Palladium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy (ICP-AES), Fire assay - aqua regia; Lower detection limit = 0.001 ppm; Upper detection limit = 10 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Alaska Division of Geological & Geophysical Surveys and University of Alaska Fairbanks, Department of Geology & Geophysics.)

    ValueDefinition
    -1Below detection limit.
    NULLBlank (NULL) field values indicate that this chemical species was not requested or not analyzed.

    Range of values
    Minimum:0.001
    Maximum:0.007
    Units:parts per million

    rdf2013-5-sample-location-details-no-suitable-media.csv
    List of visited locations in which samples were not collected for reasons noted. (Source: Alaska Division of Geological & Geophysical Surveys)

    Station
    Label assigned to identify the field location where a sample was collected. For this project a unique station value was created for all visited sites that yielded samples. However, the "Station" identifier does not uniquely identify each sample; in some cases, multiple samples were collected from the same site for different purposes. In other cases, a station number may be duplicated because the lab provided multiple analyses for a particular sample. (Source: Alaska Division of Geological & Geophysical Surveys)

    ValueDefinition
    NO SAMPLEProvides coordinate values for visited or observed sites in which 1) the location was not assigned a station identifier, and 2) a sample was not collected.

    Generic example of a station identifier: 20YYAAA9999X: YY=last two digits of year, AAA=geologist's initials (one to three characters), 9999=unique station number, X= optional alpha character which indicates that multiple samples were collected at a given location or that multiple observations were recorded in the project database. The initials used by the geologists who collected samples for this project are: AT = Amy L. Tuzzolino; BW = William (aka Bill) Wylie; LF = Larry Freeman; RN = Rainer Newberry; MJB = Michael J. Blessington; MBW = Melanie B. Werdon; CW = T. Colby Wright; and EB = Erik N. Bachmann.

    Latitude
    Latitude, NAD27 (Source: Alaska Division of Geological & Geophysical Surveys)

    Range of values
    Minimum:65.666405
    Maximum:66.771956
    Units:decimal degrees

    Longitude
    Longitude, NAD27 (Source: Alaska Division of Geological & Geophysical Surveys)

    Range of values
    Minimum:-151.212082
    Maximum:-149.756801
    Units:decimal degrees

    Description
    Description of the sample. (Source: Alaska Division of Geological & Geophysical Surveys)

    ValueDefinition
    NULLBlank (NULL) field values indicate that this data was not recorded by the sample collector.

    Characters 1 to 254 of a brief sample and/or station description.


Who produced the data set?

  1. Who are the originators of the data set? (may include formal authors, digital compilers, and editors)

  2. Who also contributed to the data set?

    Analyses were paid for by the State of Alaska's Strategic and Critical Minerals Assessment CIP, which is funded by the Alaska State Legislature and managed by the State of Alaska, Department of Natural Resources, Division of Geological & Geophysical Surveys.

  3. To whom should users address questions about the data?

    Alaska Division of Geological & Geophysical Surveys
    Attn: James Weakland
    GIS Analyst
    3354 College Road
    Fairbanks, AK 99709-3707
    USA

    (907)451-5029 (voice)
    dggsgis@alaska.gov

    Hours_of_Service: 8 am to 4:30 pm, Monday through Friday, except State holidays


Why was the data set created?

The objectives of DGGS's resource assessment are to improve the trace-element geochemical coverage of selected watersheds; to obtain modern, quantitative geochemical analyses; to understand the petrogenesis of the granites; and to better document established mineral occurrences. Stream-sediment, pan-concentrate, and rock sampling were conducted as part of the State's Rare Earth Elements and Strategic Minerals Assessment project, which is designed to evaluate Alaska's potential for these resources.


How was the data set created?

  1. From what previous works were the data drawn?

    Barker, J.C., 1992 (source 1 of 4)
    Barker, J.C., 1992, Investigation of tin-rare earth element placers in the Ray River watershed: Open-File Report OFR 34-91, U.S. Bureau of Mines, United States.

    Online Links:

    Other_Citation_Details: 63 p., 1 sheet, scale 1:63,360
    Type_of_Source_Media: paper
    Source_Scale_Denominator: 63360
    Source_Contribution: Preliminary research and fieldwork

    Barker, J.C. and Foley, J.Y., 1986 (source 2 of 4)
    Barker, J.C., and Foley, J.Y., 1986, Tin reconnaissance of the Kanuti and Hodzana Rivers uplands, central Alaska: Information Circular IC 9104, U.S. Bureau of Mines, United States.

    Online Links:

    Other_Citation_Details: 27 p
    Type_of_Source_Media: paper
    Source_Contribution: Preliminary research and fieldwork

    Foley, J.Y. and McDermott, M.M., 1983 (source 3 of 4)
    Foley, J.Y., and McDermott, M.M., 1983, Podiform chromite occurrences in the Caribou Mountain and lower Kanuti River areas, central Alaska, part I: reconnaissance investigations: Information Circular IC 8915, U.S. Bureau of Mines, United States.

    Online Links:

    Other_Citation_Details: 8 p., 1 sheet
    Type_of_Source_Media: paper
    Source_Contribution: Preliminary research and fieldwork

    Smith, S.M., 1997 (source 4 of 4)
    Smith, S.M., 1997, National geochemical database - Reformatted data from the National Uranium Resource Evaluation (NURE) Hydrogeochemical and Stream Sediment Reconnaissance (HSSR) Program: Open-File Report OF 97-492, U.S. Geological Survey, United States.

    Online Links:

    Type_of_Source_Media: digital data
    Source_Contribution: Preliminary research and fieldwork

  2. How were the data generated, processed, and modified?

    Date: 2012 (process 1 of 7)
    Preliminary research and fieldwork - Mineral-resources personnel from the Alaska Division of Geological & Geophysical Surveys (DGGS) carried out a helicopter-supported geological and geochemical resource assessment project in the Beaver, Bettles, Livengood, and Tanana quadrangles from June 23 through August 5, 2012. This location was targeted based on previously published datasets and reports which documented concentrations of base metals, tin, tungsten, chromium, rare-earth elements (REEs), and uranium in the project area. Fieldwork consisted of stream-sediment, pan-concentrate, and rock sampling.

    Data sources used in this process:

    • Barker, J.C., 1992
    • Barker, J.C. and Foley, J.Y., 1986
    • Foley, J.Y. and McDermott, M.M., 1983
    • Smith, S.M., 1997

    Date: 2012 (process 2 of 7)
    Trace-element and rare-earth-element analysis of pan-concentrate samples - Pan-concentrate samples were dried at DGGS using a hot plate and glass petri dishes, which were washed after each use to prevent cross-contamination. Dried samples were weighed to the nearest 0.1 gram and then split manually into two equal-sized, homogeneous portions using a Sepor(TM) micro splitter, which was washed after each use. One split was retained by DGGS for mineralogical studies, the other split was submitted to ALS Minerals (formerly ALS Chemex), and underwent the PREP-31 package, where the sample was logged, dried, weighed, and the entire sample was pulverized to a nominal 85% passing 75 microns (-180 mesh). Samples were analyzed for trace elements and rare earth elements using: Inductively Coupled Plasma - Atomic Emission Spectroscopy (HF-HNO3-HClO4-HCl digestion), Inductively Coupled Plasma - Mass Spectroscopy (Lithium metaborate fusion - HNO3-HCl dissolution), and/or Inductively Coupled Plasma - Atomic Emission Spectroscopy (Fire assay - aqua regia digestion). The method used to analyze each element is listed in the detection limits table. For high-grade and mineralized rare earth samples, high sample to volume ratios are utilized in the Inductively Coupled Plasma - Atomic Emission Spectroscopy analysis to improve precision. Certified high grade rare earth reference materials are used as part of the standard protocol. See ALS documentation for a more detailed discussion of the methodology.

    Date: 2012 (process 3 of 7)
    Major- and minor-oxide, trace-element, and rare-earth-element analysis of pulverized rock samples - Igneous and meta-igneous rocks showing little alteration or weathering were collected for major-oxide, minor-oxide, and trace-element analyses to determine bulk rock composition of igneous and meta-igneous lithologies, or to identify the tectonic setting of a sample's protolith from petrogenetically important trace elements. These samples were prepared by ALS Minerals in accordance with their PREP-31 package which involves crushing the entire sample to less than 70 percent passing -10 mesh (2 mm), then splitting off 250 grams and pulverizing the split to better than 85 percent passing 75 microns. Samples were analyzed using: X-Ray Fluorescence (Lithium Borate Fusion), and/or Inductively Coupled Plasma - Mass Spectroscopy (Lithium metaborate fusion - HNO3-HCl dissolution). See ALS documentation for a more detailed discussion of the methodology.

    Date: 2012 (process 4 of 7)
    Trace-element and rare-earth-element analysis of pulverized rock samples - Rock samples of visibly mineralized rock, or rocks exhibiting features associated with mineralization, were preferentially collected and analyzed for geochemical trace elements and rare earth elements. These samples were prepared by ALS Minerals in accordance with their PREP-31 package which involves crushing the entire sample to less than 70 percent passing -10 mesh (2 mm), then splitting off 250 grams and pulverizing the split to better than 85 percent passing 75 microns. Samples were analyzed for trace elements and rare earth elements using: Inductively Coupled Plasma - Mass Spectroscopy (Lithium metaborate fusion - HNO3-HCl dissolution), X-Ray Fluorescence (Lithium Borate Fusion), Inductively Coupled Plasma - Atomic Emission Spectroscopy (Fire assay - aqua regia digestion), Inductively Coupled Plasma - Atomic Emission Spectroscopy (HF-HNO3-HClO4-HCl digestion), and/or Inductively Coupled Plasma - Atomic Emission Spectroscopy (HNO3-HClO4-HF+HCl digestion). See ALS documentation for a more detailed discussion of the methodology.

    Date: 2012 (process 5 of 7)
    Major- and minor-oxide and trace-element analysis of rock-slab samples - Fine-grained igneous and meta-igneous rocks showing little alteration or weathering were collected for major-oxide, minor-oxide, and trace-element petrographic analysis using "slab" X-ray fluorescence (slab XRF) in order to determine bulk rock composition of igneous and meta-igneous lithologies, or to identify the tectonic setting of a sample's protolith from petrogenetically important trace elements. See report manuscript for a more detailed discussion of the methodology.

    Date: 2012 (process 6 of 7)
    Trace-element and rare-earth-element analysis of stream-sediment and soil samples - Stream-sediment sample locations were selected prior to fieldwork to fulfill two different needs: (1) to fill data gaps between previously collected samples with known anomalous values for REE and related elements; and (2) to fill gaps between previously collected samples. Priority was given to samples in closer proximity to the Dalton Highway Trans-Alaska Pipeline System corridor and to samples in drainage basins in or near the mapped extent of granitic plutons. In the field, specific sample locations were selected by visual inspection from the helicopter, and were based on the availability of sample material and a suitable landing zone. Specific sites along streams/rivers at the sample location were then selected, in order of preference from highest to lowest, as follows: gravel/cobble-armored riffles, gravel/cobble-armored point bars, log/boulder/plunge-pool eddies, point bars, overbank flood deposits, and moss mats. Stream-sediment samples were collected with a shovel. Cobbles and larger pebbles were manually screened out by hand, and the remaining material was placed into a permeable cloth sample bag and air dried at camp. To ensure a sufficient volume of fine sediment, 7-inch-wide by 12-inch-long sample bags were filled to capacity. Stream-sediment samples were air dried by DGGS, and then submitted to ALS Minerals (formerly ALS Chemex), and underwent the PREP-41 package, where the sediment were logged, air-dried at low temperature, and weighed. The samples were then sieved to a particle size of -180 microns (-80 mesh). Both fractions were retained, and the -80-mesh fraction was crushed and used for analysis. Some samples lacking sufficient fine material were screened to -35-mesh prior to crushing. Samples were analyzed for trace elements and rare earth elements using: Inductively Coupled Plasma - Mass Spectroscopy (Lithium metaborate fusion - HNO3-HCl dissolution), Inductively Coupled Plasma - Atomic Emission Spectroscopy (Fire assay - aqua regia digestion), and/or Inductively Coupled Plasma - Atomic Emission Spectroscopy (HF-HNO3-HClO4-HCl digestion). See ALS documentation for a more detailed discussion of the methodology.

    Date: 2012 (process 7 of 7)
    List of visited locations in which samples were not collected for reasons noted - In some cases, targeted sample sites were found to be inaccessible or did not provide suitable sampling media. To facilitate future research in the area, we compiled a list of these sites.

  3. What similar or related data should the user be aware of?

    Adleman, J.N., and Bluemink, Elizabeth, 2013, Second annual Alaska strategic and critical minerals summit: Miscellaneous Publication MP 151, Alaska Division of Geological & Geophysical Surveys, Fairbanks, Alaska, United States.

    Online Links:

    Other_Citation_Details: 17 p
    Stevens, D.S.P., Werdon, M.B., and Wright, T.C., 2013, Geochemical trace-element and rare-earth element data from rock samples collected in 2012 on Annette Island, southeast Alaska: Raw Data File RDF 2013-2, Alaska Division of Geological & Geophysical Surveys, Fairbanks, Alaska, United States.

    Online Links:

    Other_Citation_Details: 2 p
    Szumigala, D.J., and Werdon, M.B., 2011, Rare-Earth Elements: A brief overview including uses, worldwide resources, and known occurrences in Alaska: Information Circular IC 61, Alaska Division of Geological & Geophysical Surveys, Fairbanks, Alaska, United States.

    Online Links:

    Other_Citation_Details: 12 p
    Werdon, M.B., Gallagher, P.E., and Blessington, M.J., 2012, Geochemical, major-oxide, minor-oxide, trace-element, and rare-earth-element data from rock, stream sediment, and pan-concentrate samples collected in 2011 in the William Henry Bay area, Juneau C-4 and D-4 quadrangles, Southeast Alaska: Raw Data File RDF 2012-2, Alaska Division of Geological & Geophysical Surveys, Fairbanks, Alaska, United States.

    Online Links:

    Other_Citation_Details: 2 p


How reliable are the data; what problems remain in the data set?

  1. How well have the observations been checked?

    In addition to ALS Minerals' internal quality-control program accredited to ISO/IEC 17025-2005 standards, DGGS monitored analysis quality by inserting igneous-rock and ore-geochemical-pulp standards with known compositions into the sample roster for every sample batch. Some samples were retested for quality control purposes and the results were not included in the publication because the variance of the samples had a mean of 1.25 percent and presented no significant change. We report measured values which are above and/or below instrument detection limits when they are provided to us by the originating lab. These cases are noted within the detection limits tables. Users should contact the originating labs for additional information about detection limits and reporting procedures. For high-grade and mineralized rare earth samples, high sample to volume ratios are utilized in the Inductively Coupled Plasma - Atomic Emission Spectroscopy analysis to improve precision. Certified high grade rare earth reference materials are used as part of the standard protocol. These cases are noted in the detection limits tables.

  2. How accurate are the geographic locations?

    Location data were collected using Trimble TSC3 WAAS-enabled GPS devices running ArcPad 10. Data were downloaded directly from the ArcPad .AXF file into a field geodatabase set up in ArcMap. WAAS-enabled GPS devices have a reported error of about 1 meter. Sample points that were placed in the database without GPS have an estimated error ranging from 20 to 170 meters. Latitude and longitude were calculated from the GPS's UTM zone values in ArcMap using the 'calculate geometry' function and are reported using the NAD 27 datum.

  3. How accurate are the heights or depths?

  4. Where are the gaps in the data? What is missing?

    All of the samples collected were analyzed by methods appropriate to the sample media. This publication also includes location coordinates of potential sample sites in which samples were not collected for reasons noted.

  5. How consistent are the relationships among the observations, including topology?

    not applicable


How can someone get a copy of the data set?

Are there legal restrictions on access or use of the data?

Access_Constraints:
This report, map, and/or dataset is available directly from the State of Alaska, Department of Natural Resources, Division of Geological & Geophysical Surveys (see contact information below).
Use_Constraints:
Any hard copies or published datasets utilizing these datasets shall clearly indicate their source. If the user has modified the data in any way, the user is obligated to describe the types of modifications the user has made. The user specifically agrees not to misrepresent these datasets, nor to imply that changes made by the user were approved by the State of Alaska, Department of Natural Resources, Division of Geological & Geophysical Surveys. The State of Alaska makes no express or implied warranties (including warranties for merchantability and fitness) with respect to the character, functions, or capabilities of the electronic data or products or their appropriateness for any user's purposes. In no event will the State of Alaska be liable for any incidental, indirect, special, consequential, or other damages suffered by the user or any other person or entity whether from the use of the electronic services or products or any failure thereof or otherwise. In no event will the State of Alaska's liability to the Requestor or anyone else exceed the fee paid for the electronic service or product.

  1. Who distributes the data set? (Distributor 1 of 1)

    Alaska Division of Geological & Geophysical Surveys
    3354 College Road
    Fairbanks, AK 99709-3707
    USA

    (907)451-5020 (voice)
    (907)451-5050 (FAX)
    dggspubs@alaska.gov

    Hours_of_Service: 8 am to 4:30 pm, Monday through Friday, except State holidays
    Contact_Instructions:
    Please view our website (<http://www.dggs.alaska.gov>) for the latest information on available data. Please contact us using the e-mail address provided above when possible.
  2. What's the catalog number I need to order this data set?

    RDF 2013-5

  3. What legal disclaimers am I supposed to read?

    The State of Alaska makes no expressed or implied warranties (including warranties for merchantability and fitness) with respect to the character, functions, or capabilities of the electronic data or products or their appropriateness for any user's purposes. In no event will the State of Alaska be liable for any incidental, indirect, special, consequential, or other damages suffered by the user or any other person or entity whether from the use of the electronic services or products or any failure thereof or otherwise. In no event will the State of Alaska's liability to the Requestor or anyone else exceed the fee paid for the electronic service or product.

  4. How can I download or order the data?


Who wrote the metadata?

Dates:
Last modified: 12-Sep-2013
Metadata author:
Simone Montayne
3354 College Road
Fairbanks, AK 99709-3707
USA

(907)451-5020 (voice)

Metadata standard:
FGDC Content Standard for Digital Geospatial Metadata (FGDC-STD-001-1998)
Metadata extensions used:


Generated by mp version 2.9.21 on Thu Sep 12 11:32:44 2013