Major-oxide, minor-oxide, and trace-element geochemical data from rocks and stream sediments in the Wrangellia mineral assessment area, Gulkana, Healy, Mount Hayes, and Talkeetna Mountains quadrangles, Alaska

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What does this data set describe?

Title:
Major-oxide, minor-oxide, and trace-element geochemical data from rocks and stream sediments in the Wrangellia mineral assessment area, Gulkana, Healy, Mount Hayes, and Talkeetna Mountains quadrangles, Alaska
Abstract:
Mineral-resources geologists from the Alaska Division of Geological & Geophysical Surveys (DGGS) carried out a helicopter-supported geological and geochemical resource assessment project in the Gulkana, Healy, Mount Hayes, and Talkeetna Mountains quadrangles from July 29 through August 16, 2013. The objectives of this assessment were to improve the publicly-available geological, geophysical, and geochemical data in the area of known occurrences in the Mount Hayes Quadrangle, and to extend this coverage and any gained insight westward into the less-explored extension of the Wrangellia terrane. This program of stream-sediment, pan-concentrate, and rock sampling was conducted as part of the State's Strategic Minerals Assessment project, an initiative designed to evaluate Alaska's potential for rare-earth elements, PGEs, and other similarly supply-challenged resources. Highlights of this project include identification, sampling, and characterization of previously unmapped mafic to ultramafic intrusions and Nikolai Greenstone, modern geochemical characterizations of Ni-Cu-Co-PGE, skarn, vein, and basalt-hosted Cu mineralization, and documentation of regional-scale patterns in PGE enrichment across western Wrangellia. The analytical data tables associated with this report are being released in digital format as comma-delimited text (CSV) files.
Supplemental_Information:
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 and correspond to subdirectories within the data distribution package. The metadata layer provides an FGDC metadata file and may include other documentation files. Attribute information for each data layer is described in this metadata file under the "Entity_and_Attribute_Information" section. Data layer contents: >border: A polygon that encompasses the maximum geographic extent of the data observations >pan-con-trace-element: Trace-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: Trace-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: Trace-element analysis of stream-sediment and soil samples.
  1. How should this data set be cited?

    Twelker, Evan, Bachmann, E.N., Freeman, L.K., Newberry, R.J., Reioux, D.A., Sicard, K.R., Tuzzolino, A.L., Wright, T.C., and Wypych, Alicja, 2014, Major-oxide, minor-oxide, and trace-element geochemical data from rocks and stream sediments in the Wrangellia mineral assessment area, Gulkana, Healy, Mount Hayes, and Talkeetna Mountains quadrangles, Alaska: Raw Data File RDF 2014-3, Alaska Division of Geological & Geophysical Surveys, Fairbanks, Alaska, United States.

    Online Links:

    Other_Citation_Details: 6 p.

  2. What geographic area does the data set cover?

    West_Bounding_Coordinate: -149.845509
    East_Bounding_Coordinate: -139.476870
    North_Bounding_Coordinate: 63.372633
    South_Bounding_Coordinate: 61.462300

  3. What does it look like?

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

    Calendar_Date: 2013
    Currentness_Reference: ground condition

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

    Geospatial_Data_Presentation_Form: digital-data, 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?

      Horizontal positions are specified in geographic coordinates, that is, latitude and longitude. Latitudes are given to the nearest 0.00000001. Longitudes are given to the nearest 0.00000001. Latitude and longitude values are specified in decimal degrees.

      The horizontal datum used is World Geodetic System of 1984.
      The ellipsoid used is WGS 84.
      The semi-major axis of the ellipsoid used is 6378137.
      The flattening of the ellipsoid used is 1/298.257223563.

  7. How does the data set describe geographic features?

    rdf2014-3-border.shp
    A polygon that encompasses the maximum geographic extent of the data observations (Source: Alaska Division of Geological & Geophysical Surveys)

    rdf2014-3-pan-con-trace-element.csv, rdf2014-3-pan-con-trace-element-limits.csv
    Trace-element analysis of pan-concentrate samples. (Source: Alaska Division of Geological & Geophysical Surveys)

    SAMPLE
    Label assigned to identify the sample. (Source: Alaska Division of Geological & Geophysical Surveys)

    Generic example of a sample identifier: YYAAA9999X: 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, DR = David A. Reioux, EB = Erik N. Bachmann, ET = Evan Twelker, KS = Karri R. Sicard, LF = Larry K. Freeman, RN = Rainer J. Newberry, CW = Thomas C. Wright

    LATITUDE
    Latitude, WGS84 (Source: Alaska Division of Geological & Geophysical Surveys)

    Range of values
    Minimum:61.4623
    Maximum:63.3726335
    Units:decimal degrees

    LONGITUDE
    Longitude, WGS84 (Source: Alaska Division of Geological & Geophysical Surveys)

    Range of values
    Minimum:-149.8455092
    Maximum:-139.47687
    Units:decimal degrees

    WEIGHT_KG
    Sample weight (as received by the lab) in kilograms (Source: Alaska Division of Geological & Geophysical Surveys and ALS minerals)

    Range of values
    Minimum:-1
    Maximum:0.15
    Units:kilograms

    BATCH_NUMBER
    Number provided by the laboratory to identify the samples and analyses included in the work order. (Source: ALS minerals)

    FA13229306

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

    ValueDefinition
    NULLWe do not provide a description of the sample.

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

    DESCRIP_2
    Extension of the sample or station description for descriptions which are greater than 254 characters in length (Source: Alaska Division of Geological & Geophysical Surveys)

    ValueDefinition
    NULLThe descriptive text is shorter than 254 characters.

    Characters greater than 254 of the sample or station description.

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

    ValueDefinition
    NULLThe estimated average width of stream at the sample site was not recorded by the sample collector

    Range of values
    Minimum:0.5
    Maximum:30
    Units:meters

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

    ValueDefinition
    NULLThe estimated average depth of stream at the sample site was not recorded by the sample collector

    Range of values
    Minimum:0
    Maximum:20
    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.
    swiftfast moving water, many riffles, bed and bank are composed of cobbles and gravel with minor sand
    slowslow current, few riffles, bed and banks are composed of gravel and sand, minor cobbles and silt, organics may be present
    tumblingstep-wise flows with plunges and pools, bed and banks are composed of boulders and cobbles with minor gravel and finer sediment
    ephemeraldry or nearly dry stream bed

    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
    alluviumNatural unconsolidated aggregate deposited by rivers, streams and creeks
    glacialNatural unconsolidated aggregate deposited by glacial outflow
    colluviumNatural unconsolidated aggregate resulting from down slope movement of loose rocks and soil

    NUM_SITES
    Number of sample sites at the station. (Source: Alaska Division of Geological & Geophysical Surveys and ALS minerals)

    ValueDefinition
    NULLNumber of sample sites at the station was not recorded by the sample collector

    Range of values
    Minimum:1
    Maximum:11
    Units:meters

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

    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.
    boulder/log eddyGravel or sand deposited downstream of an obstruction such as a log or boulder
    point barGravel or sand deposited at the downstream end of a gravel bar
    gravel armorSediment trapped below pebble or cobble pavement at the leading edge of a gravel bar
    plunge poolSand or gravel deposited at the edge of a pool below a water fall
    dry streaminactive or intermittently active stream bed which was dry when the sample was collected
    stagnant poolBody of standing water

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

    ValueDefinition
    NULLThe distance between the creek bed and the sample site was not recorded by the sample collector

    Range of values
    Minimum:0
    Maximum:30
    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
    NULLThe distance between the creek bed and the sample site was not recorded by the sample collector

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

    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
    weakPrecipitate binds otherwise unconsolidated deposits.
    moderateObscures the color of the stream bed materials.

    Ag_ppm
    Silver values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy - Mass Spectrometry (ICP-AES-MS), HF-HNO3 -HClO4 Acid Digestion, HCl Leach; Lower detection limit = 0.01 ppm; Upper detection limit = 100 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Minerals)

    Range of values
    Minimum:0.02
    Maximum:5.79
    Units:parts per million

    Al_pct
    Aluminum values measured in percent (pct); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy - Mass Spectrometry (ICP-AES-MS), HF-HNO3 -HClO4 Acid Digestion, HCl Leach; 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: ALS Minerals)

    Range of values
    Minimum:3.16
    Maximum:8.87
    Units:percent

    As_ppm
    Arsenic values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy - Mass Spectrometry (ICP-AES-MS), HF-HNO3 -HClO4 Acid Digestion, HCl Leach; 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: ALS Minerals)

    Range of values
    Minimum:0.7
    Maximum:131
    Units:parts per million

    Ba_ppm
    Barium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy - Mass Spectrometry (ICP-AES-MS), HF-HNO3 -HClO4 Acid Digestion, HCl Leach; Lower detection limit = 10 ppm; Upper detection limit = 10000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Minerals)

    Range of values
    Minimum:40
    Maximum:1300
    Units:parts per million

    Be_ppm
    Beryllium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy - Mass Spectrometry (ICP-AES-MS), HF-HNO3 -HClO4 Acid Digestion, HCl Leach; 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: ALS Minerals)

    Range of values
    Minimum:0.32
    Maximum:1.76
    Units:parts per million

    Bi_ppm
    Bismuth values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy - Mass Spectrometry (ICP-AES-MS), HF-HNO3 -HClO4 Acid Digestion, HCl Leach; 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: ALS Minerals)

    Range of values
    Minimum:0.02
    Maximum:11.4
    Units:parts per million

    Ca_pct
    Calcium values measured in percent (pct); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy - Mass Spectrometry (ICP-AES-MS), HF-HNO3 -HClO4 Acid Digestion, HCl Leach; 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: ALS Minerals)

    Range of values
    Minimum:0.91
    Maximum:8.27
    Units:percent

    Cd_ppm
    Cadmium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy - Mass Spectrometry (ICP-AES-MS), HF-HNO3 -HClO4 Acid Digestion, HCl Leach; Lower detection limit = 0.02 ppm; Upper detection limit = 1000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Minerals)

    Range of values
    Minimum:0.05
    Maximum:1.99
    Units:parts per million

    Ce_ppm
    Cerium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy - Mass Spectrometry (ICP-AES-MS), HF-HNO3 -HClO4 Acid Digestion, HCl Leach; Lower detection limit = 0.01 ppm; Upper detection limit = 500 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Minerals)

    Range of values
    Minimum:11.85
    Maximum:300
    Units:parts per million

    Co_ppm
    Cobalt values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy - Mass Spectrometry (ICP-AES-MS), HF-HNO3 -HClO4 Acid Digestion, HCl Leach; 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: ALS Minerals)

    Range of values
    Minimum:7.2
    Maximum:145.5
    Units:parts per million

    Cr_ppm
    Chromium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy - Mass Spectrometry (ICP-AES-MS), HF-HNO3 -HClO4 Acid Digestion, HCl Leach; Lower detection limit = 1 ppm; Upper detection limit = 10000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Minerals)

    ValueDefinition
    -2Above detection limit.

    Range of values
    Minimum:34
    Maximum:3510
    Units:parts per million

    Cs_ppm
    Cesium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy - Mass Spectrometry (ICP-AES-MS), HF-HNO3 -HClO4 Acid Digestion, HCl Leach; Lower detection limit = 0.05 ppm; Upper detection limit = 500 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Minerals)

    Range of values
    Minimum:0.11
    Maximum:4.89
    Units:parts per million

    Cu_ppm
    Copper values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy - Mass Spectrometry (ICP-AES-MS), HF-HNO3 -HClO4 Acid Digestion, HCl Leach; 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: ALS Minerals)

    Range of values
    Minimum:8.3
    Maximum:786
    Units:parts per million

    Fe_pct
    Iron values measured in percent (pct); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy - Mass Spectrometry (ICP-AES-MS), HF-HNO3 -HClO4 Acid Digestion, HCl Leach; 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: ALS Minerals)

    Range of values
    Minimum:3.12
    Maximum:34.4
    Units:percent

    Ga_ppm
    Gallium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy - Mass Spectrometry (ICP-AES-MS), HF-HNO3 -HClO4 Acid Digestion, HCl Leach; Lower detection limit = 0.05 ppm; Upper detection limit = 10000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Minerals)

    Range of values
    Minimum:10.8
    Maximum:25.8
    Units:parts per million

    Ge_ppm
    Germanium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy - Mass Spectrometry (ICP-AES-MS), HF-HNO3 -HClO4 Acid Digestion, HCl Leach; Lower detection limit = 0.05 ppm; Upper detection limit = 500 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Minerals)

    Range of values
    Minimum:0.06
    Maximum:0.74
    Units:parts per million

    Hf_ppm
    Hafnium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy - Mass Spectrometry (ICP-AES-MS), HF-HNO3 -HClO4 Acid Digestion, HCl Leach; Lower detection limit = 0.1 ppm; Upper detection limit = 500 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Minerals)

    Range of values
    Minimum:0.3
    Maximum:3.2
    Units:parts per million

    In_ppm
    Indium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy - Mass Spectrometry (ICP-AES-MS), HF-HNO3 -HClO4 Acid Digestion, HCl Leach; Lower detection limit = 0.005 ppm; Upper detection limit = 500 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Minerals)

    Range of values
    Minimum:0.032
    Maximum:0.179
    Units:parts per million

    K_pct
    Potassium values measured in percent (pct); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy - Mass Spectrometry (ICP-AES-MS), HF-HNO3 -HClO4 Acid Digestion, HCl Leach; 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: ALS Minerals)

    Range of values
    Minimum:0.08
    Maximum:1.99
    Units:percent

    La_ppm
    Lanthanum values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy - Mass Spectrometry (ICP-AES-MS), HF-HNO3 -HClO4 Acid Digestion, HCl Leach; 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: ALS Minerals)

    Range of values
    Minimum:5
    Maximum:149
    Units:parts per million

    Li_ppm
    Lithium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy - Mass Spectrometry (ICP-AES-MS), HF-HNO3 -HClO4 Acid Digestion, HCl Leach; 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: ALS Minerals)

    Range of values
    Minimum:3.7
    Maximum:62.8
    Units:parts per million

    Mg_pct
    Magnesium values measured in percent (pct); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy - Mass Spectrometry (ICP-AES-MS), HF-HNO3 -HClO4 Acid Digestion, HCl Leach; 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: ALS Minerals)

    Range of values
    Minimum:0.53
    Maximum:9.36
    Units:percent

    Mn_ppm
    Manganese values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy - Mass Spectrometry (ICP-AES-MS), HF-HNO3 -HClO4 Acid Digestion, HCl Leach; Lower detection limit = 5 ppm; Upper detection limit = 100000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Minerals)

    Range of values
    Minimum:618
    Maximum:5390
    Units:parts per million

    Mo_ppm
    Molybdenum values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy - Mass Spectrometry (ICP-AES-MS), HF-HNO3 -HClO4 Acid Digestion, HCl Leach; Lower detection limit = 0.05 ppm; Upper detection limit = 10000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Minerals)

    Range of values
    Minimum:0.22
    Maximum:6.81
    Units:parts per million

    Na_pct
    Sodium values measured in percent (pct); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy - Mass Spectrometry (ICP-AES-MS), HF-HNO3 -HClO4 Acid Digestion, HCl Leach; 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: ALS Minerals)

    Range of values
    Minimum:0.76
    Maximum:2.64
    Units:percent

    Nb_ppm
    Niobium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy - Mass Spectrometry (ICP-AES-MS), HF-HNO3 -HClO4 Acid Digestion, HCl Leach; Lower detection limit = 0.1 ppm; Upper detection limit = 500 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Minerals)

    Range of values
    Minimum:3
    Maximum:37.3
    Units:parts per million

    Ni_ppm
    Nickel values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy - Mass Spectrometry (ICP-AES-MS), HF-HNO3 -HClO4 Acid Digestion, HCl Leach; Lower detection limit = 0.2 ppm; Upper detection limit = 100000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Minerals)

    Range of values
    Minimum:11.4
    Maximum:1330
    Units:parts per million

    P_ppm
    Phosphorus values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy - Mass Spectrometry (ICP-AES-MS), HF-HNO3 -HClO4 Acid Digestion, HCl Leach; Lower detection limit = 10 ppm; Upper detection limit = 10000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Minerals)

    Range of values
    Minimum:250
    Maximum:2120
    Units:parts per million

    Pb_ppm
    Lead values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy - Mass Spectrometry (ICP-AES-MS), HF-HNO3 -HClO4 Acid Digestion, HCl Leach; 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: ALS Minerals)

    Range of values
    Minimum:1.6
    Maximum:199.5
    Units:parts per million

    Rb_ppm
    Rubidium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy - Mass Spectrometry (ICP-AES-MS), HF-HNO3 -HClO4 Acid Digestion, HCl Leach; 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: ALS Minerals)

    Range of values
    Minimum:1.6
    Maximum:74.4
    Units:parts per million

    Re_ppm
    Rhenium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy - Mass Spectrometry (ICP-AES-MS), HF-HNO3 -HClO4 Acid Digestion, HCl Leach; Lower detection limit = 0.002 ppm; Upper detection limit = 50 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Minerals)

    ValueDefinition
    -1Below detection limit.

    Range of values
    Minimum:0.002
    Maximum:0.011
    Units:parts per million

    S_pct
    Sulfur values measured in percent (pct); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy - Mass Spectrometry (ICP-AES-MS), HF-HNO3 -HClO4 Acid Digestion, HCl Leach; 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: ALS Minerals)

    ValueDefinition
    -1Below detection limit.

    Range of values
    Minimum:0.01
    Maximum:1.53
    Units:percent

    Sb_ppm
    Antimony values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy - Mass Spectrometry (ICP-AES-MS), HF-HNO3 -HClO4 Acid Digestion, HCl Leach; Lower detection limit = 0.05 ppm; Upper detection limit = 10000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Minerals)

    Range of values
    Minimum:0.13
    Maximum:17.7
    Units:parts per million

    Sc_ppm
    Scandium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy - Mass Spectrometry (ICP-AES-MS), HF-HNO3 -HClO4 Acid Digestion, HCl Leach; 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: ALS Minerals)

    Range of values
    Minimum:10.7
    Maximum:50.8
    Units:parts per million

    Se_ppm
    Selenium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy - Mass Spectrometry (ICP-AES-MS), HF-HNO3 -HClO4 Acid Digestion, HCl Leach; Lower detection limit = 1 ppm; Upper detection limit = 1000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Minerals)

    Range of values
    Minimum:1
    Maximum:7
    Units:parts per million

    Sn_ppm
    Tin values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy - Mass Spectrometry (ICP-AES-MS), HF-HNO3 -HClO4 Acid Digestion, HCl Leach; Lower detection limit = 0.2 ppm; Upper detection limit = 500 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Minerals)

    Range of values
    Minimum:0.5
    Maximum:3.6
    Units:parts per million

    Sr_ppm
    Strontium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy - Mass Spectrometry (ICP-AES-MS), HF-HNO3 -HClO4 Acid Digestion, HCl Leach; 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: ALS Minerals)

    Range of values
    Minimum:113.5
    Maximum:619
    Units:parts per million

    Ta_ppm
    Tantalum values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy - Mass Spectrometry (ICP-AES-MS), HF-HNO3 -HClO4 Acid Digestion, HCl Leach; Lower detection limit = 0.05 ppm; Upper detection limit = 100 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Minerals)

    Range of values
    Minimum:0.16
    Maximum:3.37
    Units:parts per million

    Te_ppm
    Tellurium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy - Mass Spectrometry (ICP-AES-MS), HF-HNO3 -HClO4 Acid Digestion, HCl Leach; Lower detection limit = 0.05 ppm; Upper detection limit = 500 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Minerals)

    ValueDefinition
    -1Below detection limit.

    Range of values
    Minimum:0.05
    Maximum:2.17
    Units:parts per million

    Th_ppm
    Thorium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy - Mass Spectrometry (ICP-AES-MS), HF-HNO3 -HClO4 Acid Digestion, HCl Leach; 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: ALS Minerals)

    Range of values
    Minimum:0.6
    Maximum:36.6
    Units:parts per million

    Ti_pct
    Titanium values measured in percent (pct); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy - Mass Spectrometry (ICP-AES-MS), HF-HNO3 -HClO4 Acid Digestion, HCl Leach; Lower detection limit = 0.005 pct; Upper detection limit = 10 pct; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Minerals)

    Range of values
    Minimum:0.217
    Maximum:5.18
    Units:percent

    Tl_ppm
    Thallium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy - Mass Spectrometry (ICP-AES-MS), HF-HNO3 -HClO4 Acid Digestion, HCl Leach; Lower detection limit = 0.02 ppm; Upper detection limit = 10000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Minerals)

    Range of values
    Minimum:0.02
    Maximum:0.63
    Units:parts per million

    U_ppm
    Uranium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy - Mass Spectrometry (ICP-AES-MS), HF-HNO3 -HClO4 Acid Digestion, HCl Leach; 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: ALS Minerals)

    Range of values
    Minimum:0.2
    Maximum:23.4
    Units:parts per million

    V_ppm
    Vanadium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy - Mass Spectrometry (ICP-AES-MS), HF-HNO3 -HClO4 Acid Digestion, HCl Leach; Lower detection limit = 1 ppm; Upper detection limit = 10000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Minerals)

    Range of values
    Minimum:78
    Maximum:1260
    Units:parts per million

    W_ppm
    Tungsten values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy - Mass Spectrometry (ICP-AES-MS), HF-HNO3 -HClO4 Acid Digestion, HCl Leach; 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: ALS Minerals)

    ValueDefinition
    -1Below detection limit.

    Range of values
    Minimum:0.2
    Maximum:220
    Units:parts per million

    Y_ppm
    Yttrium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy - Mass Spectrometry (ICP-AES-MS), HF-HNO3 -HClO4 Acid Digestion, HCl Leach; Lower detection limit = 0.1 ppm; Upper detection limit = 500 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Minerals)

    Range of values
    Minimum:10.8
    Maximum:102.5
    Units:parts per million

    Zn_ppm
    Zinc values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy - Mass Spectrometry (ICP-AES-MS), HF-HNO3 -HClO4 Acid Digestion, HCl Leach; Lower detection limit = 2 ppm; Upper detection limit = 10000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Minerals)

    Range of values
    Minimum:45
    Maximum:420
    Units:parts per million

    Zr_ppm
    Zirconium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy - Mass Spectrometry (ICP-AES-MS), HF-HNO3 -HClO4 Acid Digestion, HCl Leach; 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: ALS Minerals)

    Range of values
    Minimum:8.1
    Maximum:124.5
    Units:parts per million

    Au_ppm
    Gold values measured in parts per million (ppm); Method: Fire Assay - Inductively Coupled Plasma - Mass Spectrometry (FA-ICP-MS); Lower detection limit = 0.001 ppm; Upper detection limit = 1 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Minerals)

    ValueDefinition
    -2Above detection limit.
    -4Insufficient sample

    Range of values
    Minimum:0.001
    Maximum:0.983
    Units:parts per million

    Pt_ppm
    Platinum values measured in parts per million (ppm); Method: Fire Assay - Inductively Coupled Plasma - Mass Spectrometry (FA-ICP-MS); Lower detection limit = 0.0005 ppm; Upper detection limit = 1 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Minerals)

    ValueDefinition
    -1Below detection limit.
    -4Insufficient sample

    Range of values
    Minimum:0.0005
    Maximum:0.138
    Units:parts per million

    Pd_ppm
    Palladium values measured in parts per million (ppm); Method: Fire Assay - Inductively Coupled Plasma - Mass Spectrometry (FA-ICP-MS); Lower detection limit = 0.001 ppm; Upper detection limit = 1 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Minerals)

    ValueDefinition
    -4Insufficient sample

    Range of values
    Minimum:0.001
    Maximum:0.167
    Units:parts per million

    rdf2014-3-rock-major-minor-oxide-trace-element-ree.csv, rdf2014-3-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)

    SAMPLE
    Label assigned to identify the sample. (Source: Alaska Division of Geological & Geophysical Surveys)

    Generic example of a sample identifier: YYAAA9999X: 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, DR = David A. Reioux, EB = Erik N. Bachmann, ET = Evan Twelker, KS = Karri R. Sicard, LF = Larry K. Freeman, RN = Rainer J. Newberry, CW = Thomas C. Wright

    LATITUDE
    Latitude, WGS84 (Source: Alaska Division of Geological & Geophysical Surveys)

    Range of values
    Minimum:62.0909595
    Maximum:63.33525167
    Units:decimal degrees

    LONGITUDE
    Longitude, WGS84 (Source: Alaska Division of Geological & Geophysical Surveys)

    Range of values
    Minimum:-149.674325
    Maximum:-145.5675483
    Units:decimal degrees

    WEIGHT_KG
    Sample weight (as received by the lab) in kilograms (Source: Alaska Division of Geological & Geophysical Surveys and ALS minerals)

    Range of values
    Minimum:0.19
    Maximum:3.01
    Units:kilograms

    BATCH_NUMBER
    Number provided by the laboratory to identify the samples and analyses included in the work order. (Source: ALS minerals)

    FA14005002

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

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

    DESCRIP_2
    Extension of the sample or station description for descriptions which are greater than 254 characters in length (Source: Alaska Division of Geological & Geophysical Surveys)

    Characters greater than 254 of the sample or station description.

    Au_ppm
    Gold values measured in parts per million (ppm); Method: Fire Assay - Inductively Coupled Plasma - Mass Spectrometry (FA-ICP-MS); Lower detection limit = 0.001 ppm; Upper detection limit = 1 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Minerals)

    Range of values
    Minimum:0.001
    Maximum:0.027
    Units:parts per million

    Pt_ppm
    Platinum values measured in parts per million (ppm); Method: Fire Assay - Inductively Coupled Plasma - Mass Spectrometry (FA-ICP-MS); Lower detection limit = 0.0005 ppm; Upper detection limit = 1 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Minerals)

    ValueDefinition
    -1Below detection limit.

    Range of values
    Minimum:0.0006
    Maximum:0.0177
    Units:parts per million

    Pd_ppm
    Palladium values measured in parts per million (ppm); Method: Fire Assay - Inductively Coupled Plasma - Mass Spectrometry (FA-ICP-MS); Lower detection limit = 0.001 ppm; Upper detection limit = 1 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Minerals)

    ValueDefinition
    -1Below detection limit.

    Range of values
    Minimum:0.001
    Maximum:0.026
    Units:parts per million

    SiO2_pct
    Silicon dioxide values measured in percent (pct); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy (ICP-AES), Lithium Metaborate/Lithium Tetraborate 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: ALS Minerals)

    Range of values
    Minimum:39.7
    Maximum:76.3
    Units:percent

    Al2O3_pct
    Aluminum oxide values measured in percent (pct); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy (ICP-AES), Lithium Metaborate/Lithium Tetraborate 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: ALS Minerals)

    Range of values
    Minimum:4.09
    Maximum:20.2
    Units:percent

    Fe2O3_pct
    Iron oxide (+3) values measured in percent (pct); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy (ICP-AES), Lithium Metaborate/Lithium Tetraborate 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: ALS Minerals)

    Range of values
    Minimum:2.38
    Maximum:18.75
    Units:percent

    CaO_pct
    Calcium oxide values measured in percent (pct); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy (ICP-AES), Lithium Metaborate/Lithium Tetraborate 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: ALS Minerals)

    Range of values
    Minimum:0.84
    Maximum:14.3
    Units:percent

    MgO_pct
    Magnesium oxide values measured in percent (pct); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy (ICP-AES), Lithium Metaborate/Lithium Tetraborate 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: ALS Minerals)

    Range of values
    Minimum:0.24
    Maximum:31
    Units:percent

    Na2O_pct
    Sodium oxide values measured in percent (pct); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy (ICP-AES), Lithium Metaborate/Lithium Tetraborate 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: ALS Minerals)

    Range of values
    Minimum:0.25
    Maximum:5.35
    Units:percent

    K2O_pct
    Potassium oxide values measured in percent (pct); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy (ICP-AES), Lithium Metaborate/Lithium Tetraborate 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: ALS Minerals)

    Range of values
    Minimum:0.07
    Maximum:4.59
    Units:percent

    Cr2O3_pct
    Chromium oxide values measured in percent (pct); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy (ICP-AES), Lithium Metaborate/Lithium Tetraborate 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: ALS Minerals)

    ValueDefinition
    -1Below detection limit.

    Range of values
    Minimum:0.01
    Maximum:0.47
    Units:percent

    TiO2_pct
    Titanium dioxide values measured in percent (pct); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy (ICP-AES), Lithium Metaborate/Lithium Tetraborate 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: ALS Minerals)

    Range of values
    Minimum:0.14
    Maximum:2.8
    Units:percent

    MnO_pct
    Manganese oxide values measured in percent (pct); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy (ICP-AES), Lithium Metaborate/Lithium Tetraborate 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: ALS Minerals)

    Range of values
    Minimum:0.04
    Maximum:0.21
    Units:percent

    P2O5_pct
    Phosphorus oxide values measured in percent (pct); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy (ICP-AES), Lithium Metaborate/Lithium Tetraborate 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: ALS Minerals)

    Range of values
    Minimum:0.01
    Maximum:0.52
    Units:percent

    SrO_pct
    Strontium oxide values measured in percent (pct); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy (ICP-AES), Lithium Metaborate/Lithium Tetraborate 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: ALS Minerals)

    ValueDefinition
    -1Below detection limit.

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

    BaO_pct
    Barium oxide values measured in percent (pct); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy (ICP-AES), Lithium Metaborate/Lithium Tetraborate 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: ALS Minerals)

    ValueDefinition
    -1Below detection limit.

    Range of values
    Minimum:0.01
    Maximum:0.18
    Units:percent

    C_pct
    Carbon values measured in percent (pct); Method: Combustion Furnace (Combustion Furnace); 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: ALS Minerals)

    Range of values
    Minimum:0.01
    Maximum:1.31
    Units:percent

    S_pct
    Sulfur values measured in percent (pct); Method: Combustion Furnace (Combustion Furnace); 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: ALS Minerals)

    ValueDefinition
    -1Below detection limit.

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

    Ba_ppm
    Barium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Mass Spectroscopy (ICP-MS), Lithium Metaborate 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: ALS Minerals)

    Range of values
    Minimum:21.2
    Maximum:1595
    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; 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: ALS Minerals)

    Range of values
    Minimum:1.7
    Maximum:79.8
    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; Lower detection limit = 10 ppm; Upper detection limit = 10000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Minerals)

    ValueDefinition
    -1Below detection limit.

    Range of values
    Minimum:10
    Maximum:3660
    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; 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: ALS Minerals)

    Range of values
    Minimum:0.09
    Maximum:4.96
    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; 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: ALS Minerals)

    Range of values
    Minimum:0.47
    Maximum:10.7
    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; 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: ALS Minerals)

    Range of values
    Minimum:0.23
    Maximum:6.77
    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; 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: ALS Minerals)

    Range of values
    Minimum:0.24
    Maximum:2.66
    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; 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: ALS Minerals)

    Range of values
    Minimum:6
    Maximum:25
    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; 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: ALS Minerals)

    Range of values
    Minimum:0.51
    Maximum:10.7
    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; 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: ALS Minerals)

    Range of values
    Minimum:0.2
    Maximum:10.5
    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; 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: ALS Minerals)

    Range of values
    Minimum:0.11
    Maximum:2.33
    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; 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: ALS Minerals)

    Range of values
    Minimum:0.8
    Maximum:48.3
    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; 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: ALS Minerals)

    Range of values
    Minimum:0.04
    Maximum:0.97
    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; 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: ALS Minerals)

    Range of values
    Minimum:0.3
    Maximum:30
    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; 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: ALS Minerals)

    Range of values
    Minimum:1.1
    Maximum:43.6
    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; 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: ALS Minerals)

    Range of values
    Minimum:0.24
    Maximum:10.25
    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; 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: ALS Minerals)

    Range of values
    Minimum:1.9
    Maximum:160
    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; 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: ALS Minerals)

    Range of values
    Minimum:0.4
    Maximum:11.2
    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; Lower detection limit = 1 ppm; Upper detection limit = 10000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Minerals)

    ValueDefinition
    -1Below detection limit.

    Range of values
    Minimum:1
    Maximum:3
    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; 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: ALS Minerals)

    Range of values
    Minimum:31.6
    Maximum:981
    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; 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: ALS Minerals)

    ValueDefinition
    -1Below detection limit.

    Range of values
    Minimum:0.1
    Maximum:1.9
    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; 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: ALS Minerals)

    Range of values
    Minimum:0.09
    Maximum:1.68
    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; 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: ALS Minerals)

    Range of values
    Minimum:0.1
    Maximum:36.3
    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; 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: ALS Minerals)

    ValueDefinition
    -1Below detection limit.

    Range of values
    Minimum:0.5
    Maximum:0.5
    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; 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: ALS Minerals)

    Range of values
    Minimum:0.03
    Maximum:0.93
    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; 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: ALS Minerals)

    ValueDefinition
    -1Below detection limit.

    Range of values
    Minimum:0.06
    Maximum:5.1
    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; Lower detection limit = 5 ppm; Upper detection limit = 10000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Minerals)

    Range of values
    Minimum:12
    Maximum:1495
    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; Lower detection limit = 1 ppm; Upper detection limit = 10000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Minerals)

    ValueDefinition
    -1Below detection limit.

    Range of values
    Minimum:1
    Maximum:4
    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; 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: ALS Minerals)

    Range of values
    Minimum:2.6
    Maximum:59.6
    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; 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: ALS Minerals)

    Range of values
    Minimum:0.3
    Maximum:6.51
    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; Lower detection limit = 2 ppm; Upper detection limit = 10000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Minerals)

    Range of values
    Minimum:5
    Maximum:482
    Units:parts per million

    As_ppm
    Arsenic values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Mass Spectroscopy (ICP-MS), Aqua regia; Lower detection limit = 0.1 ppm; Upper detection limit = 250 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Minerals)

    ValueDefinition
    -1Below detection limit.

    Range of values
    Minimum:0.2
    Maximum:8.4
    Units:parts per million

    Bi_ppm
    Bismuth values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Mass Spectroscopy (ICP-MS), Aqua regia; Lower detection limit = 0.01 ppm; Upper detection limit = 250 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Minerals)

    ValueDefinition
    -1Below detection limit.

    Range of values
    Minimum:0.01
    Maximum:0.7
    Units:parts per million

    Hg_ppm
    Mercury values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Mass Spectroscopy (ICP-MS), Aqua regia; Lower detection limit = 0.005 ppm; Upper detection limit = 25 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Minerals)

    ValueDefinition
    -1Below detection limit.

    Range of values
    Minimum:0.005
    Maximum:0.088
    Units:parts per million

    Sb_ppm
    Antimony values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Mass Spectroscopy (ICP-MS), Aqua regia; Lower detection limit = 0.05 ppm; Upper detection limit = 250 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Minerals)

    ValueDefinition
    -1Below detection limit.

    Range of values
    Minimum:0.05
    Maximum:2.9
    Units:parts per million

    Se_ppm
    Selenium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Mass Spectroscopy (ICP-MS), Aqua regia; Lower detection limit = 0.2 ppm; Upper detection limit = 250 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Minerals)

    Range of values
    Minimum:0.2
    Maximum:0.9
    Units:parts per million

    Te_ppm
    Tellurium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Mass Spectroscopy (ICP-MS), Aqua regia; Lower detection limit = 0.01 ppm; Upper detection limit = 250 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Minerals)

    ValueDefinition
    -1Below detection limit.

    Range of values
    Minimum:0.01
    Maximum:0.03
    Units:parts per million

    LOI_pct
    Loss on Ignition values measured in percent (pct); Method: Gravimetric (GRAV), Thermal decomposition furnace; 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: ALS Minerals)

    Range of values
    Minimum:0.42
    Maximum:7.71
    Units:percent

    Total_pct
    Total values measured in percent (pct); Method: Calculation (Calculation); 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: ALS Minerals)

    Range of values
    Minimum:94.83
    Maximum:101.89
    Units:percent

    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: ALS Minerals)

    ValueDefinition
    -1Below detection limit.

    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: ALS Minerals)

    ValueDefinition
    -1Below detection limit.

    Range of values
    Minimum:0.5
    Maximum:0.8
    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: ALS Minerals)

    Range of values
    Minimum:2
    Maximum:134
    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: ALS Minerals)

    Range of values
    Minimum:1
    Maximum:409
    Units:parts per million

    Li_ppm
    Lithium 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: ALS Minerals)

    ValueDefinition
    -1Below detection limit.

    Range of values
    Minimum:10
    Maximum:30
    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: ALS Minerals)

    ValueDefinition
    -1Below detection limit.

    Range of values
    Minimum:1
    Maximum:18
    Units:parts per million

    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: ALS Minerals)

    ValueDefinition
    -1Below detection limit.

    Range of values
    Minimum:1
    Maximum:990
    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: ALS Minerals)

    ValueDefinition
    -1Below detection limit.

    Range of values
    Minimum:2
    Maximum:16
    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: ALS Minerals)

    Range of values
    Minimum:3
    Maximum:44
    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: ALS Minerals)

    Range of values
    Minimum:15
    Maximum:150
    Units:parts per million

    rdf2014-3-rock-trace-element.csv, rdf2014-3-rock-trace-element-limits.csv
    Trace-element analysis of pulverized rock samples. (Source: Alaska Division of Geological & Geophysical Surveys)

    SAMPLE
    Label assigned to identify the sample. (Source: Alaska Division of Geological & Geophysical Surveys)

    Generic example of a sample identifier: YYAAA9999X: 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, DR = David A. Reioux, EB = Erik N. Bachmann, ET = Evan Twelker, KS = Karri R. Sicard, LF = Larry K. Freeman, RN = Rainer J. Newberry, CW = Thomas C. Wright

    LATITUDE
    Latitude, WGS84 (Source: Alaska Division of Geological & Geophysical Surveys)

    Range of values
    Minimum:62.242602
    Maximum:63.355773
    Units:decimal degrees

    LONGITUDE
    Longitude, WGS84 (Source: Alaska Division of Geological & Geophysical Surveys)

    Range of values
    Minimum:-149.084928
    Maximum:-145.594838
    Units:decimal degrees

    WEIGHT_KG
    Sample weight (as received by the lab) in kilograms (Source: Alaska Division of Geological & Geophysical Surveys and ALS minerals)

    Range of values
    Minimum:0.29
    Maximum:8.25
    Units:kilograms

    BATCH_NUMBER
    Number provided by the laboratory to identify the samples and analyses included in the work order. (Source: ALS minerals)

    FA14005001

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

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

    DESCRIP_2
    Extension of the sample or station description for descriptions which are greater than 254 characters in length (Source: Alaska Division of Geological & Geophysical Surveys)

    ValueDefinition
    NULLThe descriptive text is shorter than 254 characters.

    Characters greater than 254 of the sample or station description.

    Au_ppm_1
    Gold values measured in parts per million (ppm); Method: Fire Assay - Inductively Coupled Plasma - Mass Spectrometry (FA-ICP-MS); Lower detection limit = 0.001 ppm; Upper detection limit = 1 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Minerals)

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

    Range of values
    Minimum:0.001
    Maximum:0.946
    Units:parts per million

    Pt_ppm_1
    Platinum values measured in parts per million (ppm); Method: Fire Assay - Inductively Coupled Plasma - Mass Spectrometry (FA-ICP-MS); Lower detection limit = 0.0005 ppm; Upper detection limit = 1 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Minerals)

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

    Range of values
    Minimum:0.0005
    Maximum:0.395
    Units:parts per million

    Pd_ppm_1
    Palladium values measured in parts per million (ppm); Method: Fire Assay - Inductively Coupled Plasma - Mass Spectrometry (FA-ICP-MS); Lower detection limit = 0.001 ppm; Upper detection limit = 1 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Minerals)

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

    Range of values
    Minimum:0.001
    Maximum:0.715
    Units:parts per million

    Au_ppm_2
    Gold values measured in parts per million (ppm); Method: Fire Assay - Atomic Absorption Spectroscopy (FA-AAS); Lower detection limit = 0.01 ppm; Upper detection limit = 100 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Minerals)

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

    Range of values
    Minimum:0.87
    Maximum:22.6
    Units:parts per million

    Au_ppm_3
    Gold values measured in parts per million (ppm); Method: Fire Assay - Inductively Coupled Plasma - Atomic Emission Spectroscopy (FA-ICP-AES); Lower detection limit = 0.03 ppm; Upper detection limit = 100 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Minerals)

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

    Range of values
    Minimum:0.29
    Maximum:0.34
    Units:parts per million

    Pt_ppm_2
    Platinum values measured in parts per million (ppm); Method: Fire Assay - Inductively Coupled Plasma - Atomic Emission Spectroscopy (FA-ICP-AES); Lower detection limit = 0.03 ppm; Upper detection limit = 100 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Minerals)

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

    Range of values
    Minimum:1.09
    Maximum:1.27
    Units:parts per million

    Pd_ppm_2
    Palladium values measured in parts per million (ppm); Method: Fire Assay - Inductively Coupled Plasma - Atomic Emission Spectroscopy (FA-ICP-AES); Lower detection limit = 0.03 ppm; Upper detection limit = 100 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Minerals)

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

    Range of values
    Minimum:1.13
    Maximum:1.45
    Units:parts per million

    Ag_ppm_1
    Silver values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy - Mass Spectrometry (ICP-AES-MS), HF-HNO3 -HClO4 Acid Digestion, HCl Leach; Lower detection limit = 0.01 ppm; Upper detection limit = 100 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Minerals)

    ValueDefinition
    -2Above detection limit.

    Range of values
    Minimum:0.02
    Maximum:92.2
    Units:parts per million

    Al_pct
    Aluminum values measured in percent (pct); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy - Mass Spectrometry (ICP-AES-MS), HF-HNO3 -HClO4 Acid Digestion, HCl Leach; 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: ALS Minerals)

    Range of values
    Minimum:0.02
    Maximum:8.83
    Units:percent

    As_ppm
    Arsenic values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy - Mass Spectrometry (ICP-AES-MS), HF-HNO3 -HClO4 Acid Digestion, HCl Leach; 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: ALS Minerals)

    ValueDefinition
    -1Below detection limit.

    Range of values
    Minimum:0.2
    Maximum:1355
    Units:parts per million

    Ba_ppm
    Barium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy - Mass Spectrometry (ICP-AES-MS), HF-HNO3 -HClO4 Acid Digestion, HCl Leach; Lower detection limit = 10 ppm; Upper detection limit = 10000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Minerals)

    ValueDefinition
    -1Below detection limit.

    Range of values
    Minimum:10
    Maximum:3500
    Units:parts per million

    Be_ppm
    Beryllium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy - Mass Spectrometry (ICP-AES-MS), HF-HNO3 -HClO4 Acid Digestion, HCl Leach; 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: ALS Minerals)

    ValueDefinition
    -1Below detection limit.

    Range of values
    Minimum:0.07
    Maximum:2.84
    Units:parts per million

    Bi_ppm
    Bismuth values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy - Mass Spectrometry (ICP-AES-MS), HF-HNO3 -HClO4 Acid Digestion, HCl Leach; 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: ALS Minerals)

    Range of values
    Minimum:0.01
    Maximum:534
    Units:parts per million

    Ca_pct
    Calcium values measured in percent (pct); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy - Mass Spectrometry (ICP-AES-MS), HF-HNO3 -HClO4 Acid Digestion, HCl Leach; 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: ALS Minerals)

    Range of values
    Minimum:0.04
    Maximum:24.1
    Units:percent

    Cd_ppm
    Cadmium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy - Mass Spectrometry (ICP-AES-MS), HF-HNO3 -HClO4 Acid Digestion, HCl Leach; Lower detection limit = 0.02 ppm; Upper detection limit = 1000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Minerals)

    ValueDefinition
    -1Below detection limit.

    Range of values
    Minimum:0.03
    Maximum:17.5
    Units:parts per million

    Ce_ppm
    Cerium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy - Mass Spectrometry (ICP-AES-MS), HF-HNO3 -HClO4 Acid Digestion, HCl Leach; Lower detection limit = 0.01 ppm; Upper detection limit = 500 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Minerals)

    Range of values
    Minimum:0.16
    Maximum:79.9
    Units:parts per million

    Co_ppm
    Cobalt values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy - Mass Spectrometry (ICP-AES-MS), HF-HNO3 -HClO4 Acid Digestion, HCl Leach; 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: ALS Minerals)

    Range of values
    Minimum:1.3
    Maximum:616
    Units:parts per million

    Cr_ppm
    Chromium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy - Mass Spectrometry (ICP-AES-MS), HF-HNO3 -HClO4 Acid Digestion, HCl Leach; Lower detection limit = 1 ppm; Upper detection limit = 10000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Minerals)

    Range of values
    Minimum:3
    Maximum:5000
    Units:parts per million

    Cs_ppm
    Cesium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy - Mass Spectrometry (ICP-AES-MS), HF-HNO3 -HClO4 Acid Digestion, HCl Leach; Lower detection limit = 0.05 ppm; Upper detection limit = 500 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Minerals)

    ValueDefinition
    -1Below detection limit.

    Range of values
    Minimum:0.05
    Maximum:5.69
    Units:parts per million

    Cu_ppm
    Copper values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy - Mass Spectrometry (ICP-AES-MS), HF-HNO3 -HClO4 Acid Digestion, HCl Leach; 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: ALS Minerals)

    ValueDefinition
    -2Above detection limit.

    Range of values
    Minimum:9.1
    Maximum:9890
    Units:parts per million

    Fe_pct
    Iron values measured in percent (pct); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy - Mass Spectrometry (ICP-AES-MS), HF-HNO3 -HClO4 Acid Digestion, HCl Leach; 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: ALS Minerals)

    Range of values
    Minimum:1.1
    Maximum:49
    Units:percent

    Ga_ppm
    Gallium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy - Mass Spectrometry (ICP-AES-MS), HF-HNO3 -HClO4 Acid Digestion, HCl Leach; Lower detection limit = 0.05 ppm; Upper detection limit = 10000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Minerals)

    Range of values
    Minimum:0.17
    Maximum:37.7
    Units:parts per million

    Ge_ppm
    Germanium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy - Mass Spectrometry (ICP-AES-MS), HF-HNO3 -HClO4 Acid Digestion, HCl Leach; Lower detection limit = 0.05 ppm; Upper detection limit = 500 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Minerals)

    ValueDefinition
    -1Below detection limit.

    Range of values
    Minimum:0.07
    Maximum:1.75
    Units:parts per million

    Hf_ppm
    Hafnium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy - Mass Spectrometry (ICP-AES-MS), HF-HNO3 -HClO4 Acid Digestion, HCl Leach; Lower detection limit = 0.1 ppm; Upper detection limit = 500 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Minerals)

    ValueDefinition
    -1Below detection limit.

    Range of values
    Minimum:0.1
    Maximum:6
    Units:parts per million

    In_ppm
    Indium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy - Mass Spectrometry (ICP-AES-MS), HF-HNO3 -HClO4 Acid Digestion, HCl Leach; Lower detection limit = 0.005 ppm; Upper detection limit = 500 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Minerals)

    ValueDefinition
    -1Below detection limit.

    Range of values
    Minimum:0.007
    Maximum:4.47
    Units:parts per million

    K_pct
    Potassium values measured in percent (pct); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy - Mass Spectrometry (ICP-AES-MS), HF-HNO3 -HClO4 Acid Digestion, HCl Leach; 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: ALS Minerals)

    ValueDefinition
    -1Below detection limit.

    Range of values
    Minimum:0.01
    Maximum:3.91
    Units:percent

    La_ppm
    Lanthanum values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy - Mass Spectrometry (ICP-AES-MS), HF-HNO3 -HClO4 Acid Digestion, HCl Leach; 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: ALS Minerals)

    ValueDefinition
    -1Below detection limit.

    Range of values
    Minimum:0.7
    Maximum:39.3
    Units:parts per million

    Li_ppm
    Lithium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy - Mass Spectrometry (ICP-AES-MS), HF-HNO3 -HClO4 Acid Digestion, HCl Leach; 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: ALS Minerals)

    Range of values
    Minimum:0.2
    Maximum:35.3
    Units:parts per million

    Mg_pct
    Magnesium values measured in percent (pct); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy - Mass Spectrometry (ICP-AES-MS), HF-HNO3 -HClO4 Acid Digestion, HCl Leach; 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: ALS Minerals)

    ValueDefinition
    -1Below detection limit.

    Range of values
    Minimum:0.01
    Maximum:27.5
    Units:percent

    Mn_ppm
    Manganese values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy - Mass Spectrometry (ICP-AES-MS), HF-HNO3 -HClO4 Acid Digestion, HCl Leach; Lower detection limit = 5 ppm; Upper detection limit = 100000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Minerals)

    Range of values
    Minimum:39
    Maximum:7350
    Units:parts per million

    Mo_ppm
    Molybdenum values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy - Mass Spectrometry (ICP-AES-MS), HF-HNO3 -HClO4 Acid Digestion, HCl Leach; Lower detection limit = 0.05 ppm; Upper detection limit = 10000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Minerals)

    Range of values
    Minimum:0.08
    Maximum:257
    Units:parts per million

    Na_pct
    Sodium values measured in percent (pct); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy - Mass Spectrometry (ICP-AES-MS), HF-HNO3 -HClO4 Acid Digestion, HCl Leach; 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: ALS Minerals)

    ValueDefinition
    -1Below detection limit.

    Range of values
    Minimum:0.01
    Maximum:4.19
    Units:percent

    Nb_ppm
    Niobium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy - Mass Spectrometry (ICP-AES-MS), HF-HNO3 -HClO4 Acid Digestion, HCl Leach; Lower detection limit = 0.1 ppm; Upper detection limit = 500 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Minerals)

    Range of values
    Minimum:0.1
    Maximum:30.9
    Units:parts per million

    Ni_ppm
    Nickel values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy - Mass Spectrometry (ICP-AES-MS), HF-HNO3 -HClO4 Acid Digestion, HCl Leach; Lower detection limit = 0.2 ppm; Upper detection limit = 100000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Minerals)

    ValueDefinition
    -2Above detection limit.

    Range of values
    Minimum:0.7
    Maximum:7590
    Units:parts per million

    P_ppm
    Phosphorus values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy - Mass Spectrometry (ICP-AES-MS), HF-HNO3 -HClO4 Acid Digestion, HCl Leach; Lower detection limit = 10 ppm; Upper detection limit = 10000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Minerals)

    ValueDefinition
    -1Below detection limit.

    Range of values
    Minimum:10
    Maximum:4790
    Units:parts per million

    Pb_ppm
    Lead values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy - Mass Spectrometry (ICP-AES-MS), HF-HNO3 -HClO4 Acid Digestion, HCl Leach; 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: ALS Minerals)

    ValueDefinition
    -1Below detection limit.

    Range of values
    Minimum:0.5
    Maximum:86.8
    Units:parts per million

    Rb_ppm
    Rubidium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy - Mass Spectrometry (ICP-AES-MS), HF-HNO3 -HClO4 Acid Digestion, HCl Leach; 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: ALS Minerals)

    ValueDefinition
    -1Below detection limit.

    Range of values
    Minimum:0.1
    Maximum:127.5
    Units:parts per million

    Re_ppm
    Rhenium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy - Mass Spectrometry (ICP-AES-MS), HF-HNO3 -HClO4 Acid Digestion, HCl Leach; Lower detection limit = 0.002 ppm; Upper detection limit = 50 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Minerals)

    ValueDefinition
    -1Below detection limit.

    Range of values
    Minimum:0.002
    Maximum:0.725
    Units:parts per million

    S_pct
    Sulfur values measured in percent (pct); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy - Mass Spectrometry (ICP-AES-MS), HF-HNO3 -HClO4 Acid Digestion, HCl Leach; 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: ALS Minerals)

    ValueDefinition
    -1Below detection limit.

    Range of values
    Minimum:0.01
    Maximum:9.14
    Units:percent

    Sb_ppm
    Antimony values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy - Mass Spectrometry (ICP-AES-MS), HF-HNO3 -HClO4 Acid Digestion, HCl Leach; Lower detection limit = 0.05 ppm; Upper detection limit = 10000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Minerals)

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

    Range of values
    Minimum:0.08
    Maximum:2660
    Units:parts per million

    Sc_ppm
    Scandium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy - Mass Spectrometry (ICP-AES-MS), HF-HNO3 -HClO4 Acid Digestion, HCl Leach; 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: ALS Minerals)

    Range of values
    Minimum:0.1
    Maximum:64.2
    Units:parts per million

    Se_ppm
    Selenium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy - Mass Spectrometry (ICP-AES-MS), HF-HNO3 -HClO4 Acid Digestion, HCl Leach; Lower detection limit = 1 ppm; Upper detection limit = 1000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Minerals)

    ValueDefinition
    -1Below detection limit.

    Range of values
    Minimum:1
    Maximum:124
    Units:parts per million

    Sn_ppm
    Tin values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy - Mass Spectrometry (ICP-AES-MS), HF-HNO3 -HClO4 Acid Digestion, HCl Leach; Lower detection limit = 0.2 ppm; Upper detection limit = 500 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Minerals)

    ValueDefinition
    -1Below detection limit.

    Range of values
    Minimum:0.2
    Maximum:9.4
    Units:parts per million

    Sr_ppm
    Strontium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy - Mass Spectrometry (ICP-AES-MS), HF-HNO3 -HClO4 Acid Digestion, HCl Leach; 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: ALS Minerals)

    Range of values
    Minimum:0.8
    Maximum:1185
    Units:parts per million

    Ta_ppm
    Tantalum values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy - Mass Spectrometry (ICP-AES-MS), HF-HNO3 -HClO4 Acid Digestion, HCl Leach; Lower detection limit = 0.05 ppm; Upper detection limit = 100 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Minerals)

    ValueDefinition
    -1Below detection limit.

    Range of values
    Minimum:0.05
    Maximum:2.03
    Units:parts per million

    Te_ppm
    Tellurium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy - Mass Spectrometry (ICP-AES-MS), HF-HNO3 -HClO4 Acid Digestion, HCl Leach; Lower detection limit = 0.05 ppm; Upper detection limit = 500 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Minerals)

    ValueDefinition
    -1Below detection limit.

    Range of values
    Minimum:0.05
    Maximum:62.3
    Units:parts per million

    Th_ppm
    Thorium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy - Mass Spectrometry (ICP-AES-MS), HF-HNO3 -HClO4 Acid Digestion, HCl Leach; 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: ALS Minerals)

    ValueDefinition
    -1Below detection limit.

    Range of values
    Minimum:0.2
    Maximum:16.8
    Units:parts per million

    Ti_pct
    Titanium values measured in percent (pct); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy - Mass Spectrometry (ICP-AES-MS), HF-HNO3 -HClO4 Acid Digestion, HCl Leach; Lower detection limit = 0.005 pct; Upper detection limit = 10 pct; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Minerals)

    ValueDefinition
    -1Below detection limit.

    Range of values
    Minimum:0.005
    Maximum:4.05
    Units:percent

    Tl_ppm
    Thallium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy - Mass Spectrometry (ICP-AES-MS), HF-HNO3 -HClO4 Acid Digestion, HCl Leach; Lower detection limit = 0.02 ppm; Upper detection limit = 10000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Minerals)

    ValueDefinition
    -1Below detection limit.

    Range of values
    Minimum:0.02
    Maximum:15.4
    Units:parts per million

    U_ppm
    Uranium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy - Mass Spectrometry (ICP-AES-MS), HF-HNO3 -HClO4 Acid Digestion, HCl Leach; 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: ALS Minerals)

    ValueDefinition
    -1Below detection limit.

    Range of values
    Minimum:0.1
    Maximum:48.7
    Units:parts per million

    V_ppm
    Vanadium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy - Mass Spectrometry (ICP-AES-MS), HF-HNO3 -HClO4 Acid Digestion, HCl Leach; Lower detection limit = 1 ppm; Upper detection limit = 10000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Minerals)

    ValueDefinition
    -1Below detection limit.

    Range of values
    Minimum:1
    Maximum:3150
    Units:parts per million

    W_ppm
    Tungsten values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy - Mass Spectrometry (ICP-AES-MS), HF-HNO3 -HClO4 Acid Digestion, HCl Leach; 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: ALS Minerals)

    Range of values
    Minimum:0.1
    Maximum:95.5
    Units:parts per million

    Y_ppm
    Yttrium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy - Mass Spectrometry (ICP-AES-MS), HF-HNO3 -HClO4 Acid Digestion, HCl Leach; Lower detection limit = 0.1 ppm; Upper detection limit = 500 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Minerals)

    Range of values
    Minimum:0.2
    Maximum:44.5
    Units:parts per million

    Zn_ppm
    Zinc values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy - Mass Spectrometry (ICP-AES-MS), HF-HNO3 -HClO4 Acid Digestion, HCl Leach; Lower detection limit = 2 ppm; Upper detection limit = 10000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Minerals)

    ValueDefinition
    -1Below detection limit.

    Range of values
    Minimum:4
    Maximum:851
    Units:parts per million

    Zr_ppm
    Zirconium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy - Mass Spectrometry (ICP-AES-MS), HF-HNO3 -HClO4 Acid Digestion, HCl Leach; 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: ALS Minerals)

    ValueDefinition
    -1Below detection limit.

    Range of values
    Minimum:0.5
    Maximum:228
    Units:parts per million

    Ag_ppm_2
    Silver values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy (ICP-AES), HNO3 -HClO4 -HF-HCl; Lower detection limit = 1 ppm; Upper detection limit = 1500 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Minerals)

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

    Range of values
    Minimum:104
    Maximum:194
    Units:parts per million

    Cu_pct
    Copper 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 = 40 pct; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Minerals)

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

    Range of values
    Minimum:1.03
    Maximum:37
    Units:percent

    Ni_pct
    Nickel 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: ALS Minerals)

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

    Range of values
    Minimum:1.455
    Maximum:2.52
    Units:percent

    rdf2014-3-slab-xrf-major-minor-oxide-trace-element.csv, rdf2014-3-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)

    SAMPLE
    Label assigned to identify the sample. (Source: Alaska Division of Geological & Geophysical Surveys)

    Generic example of a sample identifier: YYAAA9999X: 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, DR = David A. Reioux, EB = Erik N. Bachmann, ET = Evan Twelker, KS = Karri R. Sicard, LF = Larry K. Freeman, RN = Rainer J. Newberry, CW = Thomas C. Wright

    LATITUDE
    Latitude, WGS84 (Source: Alaska Division of Geological & Geophysical Surveys)

    Range of values
    Minimum:62.05472767
    Maximum:63.3557735
    Units:decimal degrees

    LONGITUDE
    Longitude, WGS84 (Source: Alaska Division of Geological & Geophysical Surveys)

    Range of values
    Minimum:-149.7996313
    Maximum:-145.5770188
    Units:decimal degrees

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

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

    DESCRIP_2
    Extension of the sample or station description for descriptions which are greater than 254 characters in length (Source: Alaska Division of Geological & Geophysical Surveys)

    ValueDefinition
    NULLThe descriptive text is shorter than 254 characters.

    Characters greater than 254 of the sample 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: Advanced Instrumentation Laboratory at the University of Alaska Fairbanks)

    Range of values
    Minimum:19.73
    Maximum:85.907
    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: Advanced Instrumentation Laboratory at the University of Alaska Fairbanks)

    Range of values
    Minimum:3.36176
    Maximum:17.4
    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. (Source: Advanced Instrumentation Laboratory at the University of Alaska Fairbanks)

    ValueDefinition
    NULLBlank (NULL) field values may indicate that either the chemical species was not analyzed or that it was measured but found to be below detection limits.

    Range of values
    Minimum:0.00801
    Maximum:1.29
    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: Advanced Instrumentation Laboratory at the University of Alaska Fairbanks)

    Range of values
    Minimum:0.0954
    Maximum:37.3
    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: Advanced Instrumentation Laboratory at the University of Alaska Fairbanks)

    Range of values
    Minimum:0.315
    Maximum:17.4
    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: Advanced Instrumentation Laboratory at the University of Alaska Fairbanks)

    ValueDefinition
    NULLBlank (NULL) field values may indicate that either the chemical species was not analyzed or that it was measured but found to be below detection limits.

    Range of values
    Minimum:0.00293
    Maximum:4.82
    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. (Source: Advanced Instrumentation Laboratory at the University of Alaska Fairbanks)

    Range of values
    Minimum:0.090625
    Maximum:47
    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. (Source: Advanced Instrumentation Laboratory at the University of Alaska Fairbanks)

    ValueDefinition
    NULLBlank (NULL) field values may indicate that either the chemical species was not analyzed or that it was measured but found to be below detection limits.

    Range of values
    Minimum:0.00487
    Maximum:0.399
    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. (Source: Advanced Instrumentation Laboratory at the University of Alaska Fairbanks)

    ValueDefinition
    NULLBlank (NULL) field values may indicate that either the chemical species was not analyzed or that it was measured but found to be below detection limits.

    Range of values
    Minimum:0.054385
    Maximum:6.8693
    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. (Source: Advanced Instrumentation Laboratory at the University of Alaska Fairbanks)

    Range of values
    Minimum:0.006636
    Maximum:26.11
    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: Advanced Instrumentation Laboratory at the University of Alaska Fairbanks)

    ValueDefinition
    NULLBlank (NULL) field values may indicate that either the chemical species was not analyzed or that it was measured but found to be below detection limits.

    Range of values
    Minimum:0.0015
    Maximum:1.71
    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. (Source: Advanced Instrumentation Laboratory at the University of Alaska Fairbanks)

    Range of values
    Minimum:0.05014
    Maximum:2.7324
    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: Advanced Instrumentation Laboratory at the University of Alaska Fairbanks)

    ValueDefinition
    NULLBlank (NULL) field values may indicate that either the chemical species was not analyzed or that it was measured but found to be below detection limits.

    Range of values
    Minimum:0.686
    Maximum:1.44
    Units:percent

    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. (Source: Advanced Instrumentation Laboratory at the University of Alaska Fairbanks)

    ValueDefinition
    NULLBlank (NULL) field values may indicate that either the chemical species was not analyzed or that it was measured but found to be below detection limits.

    Range of values
    Minimum:1
    Maximum:214
    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: Advanced Instrumentation Laboratory at the University of Alaska Fairbanks)

    ValueDefinition
    NULLBlank (NULL) field values may indicate that either the chemical species was not analyzed or that it was measured but found to be below detection limits.

    Range of values
    Minimum:35
    Maximum:35
    Units:parts per million

    Cl_ppm
    Chlorine values measured in parts per million (ppm); Method: X-Ray Fluorescence (XRF); Lower detection limit = 100 ppm; Upper detection limit = 100000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Advanced Instrumentation Laboratory at the University of Alaska Fairbanks)

    ValueDefinition
    NULLBlank (NULL) field values may indicate that either the chemical species was not analyzed or that it was measured but found to be below detection limits.

    Range of values
    Minimum:25
    Maximum:2650
    Units:parts per million

    Co_ppm
    Cobalt values measured in parts per million (ppm); Method: X-Ray Fluorescence (XRF); Lower detection limit = 10 ppm; Upper detection limit = 750000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Advanced Instrumentation Laboratory at the University of Alaska Fairbanks)

    ValueDefinition
    NULLBlank (NULL) field values may indicate that either the chemical species was not analyzed or that it was measured but found to be below detection limits.

    Range of values
    Minimum:7
    Maximum:167
    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: Advanced Instrumentation Laboratory at the University of Alaska Fairbanks)

    ValueDefinition
    NULLBlank (NULL) field values may indicate that either the chemical species was not analyzed or that it was measured but found to be below detection limits.

    Range of values
    Minimum:7
    Maximum:5406
    Units:parts per million

    Cu_ppm
    Copper values measured in parts per million (ppm); Method: X-Ray Fluorescence (XRF); Lower detection limit = 120 ppm; Upper detection limit = 750000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Advanced Instrumentation Laboratory at the University of Alaska Fairbanks)

    ValueDefinition
    NULLBlank (NULL) field values may indicate that either the chemical species was not analyzed or that it was measured but found to be below detection limits.

    Range of values
    Minimum:120
    Maximum:43700
    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. (Source: Advanced Instrumentation Laboratory at the University of Alaska Fairbanks)

    ValueDefinition
    NULLBlank (NULL) field values may indicate that either the chemical species was not analyzed or that it was measured but found to be below detection limits.

    Range of values
    Minimum:10
    Maximum:41
    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: Advanced Instrumentation Laboratory at the University of Alaska Fairbanks)

    ValueDefinition
    NULLBlank (NULL) field values may indicate that either the chemical species was not analyzed or that it was measured but found to be below detection limits.

    Range of values
    Minimum:7
    Maximum:17
    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: Advanced Instrumentation Laboratory at the University of Alaska Fairbanks)

    ValueDefinition
    NULLBlank (NULL) field values may indicate that either the chemical species was not analyzed or that it was measured but found to be below detection limits.

    Range of values
    Minimum:18
    Maximum:5594
    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. (Source: Advanced Instrumentation Laboratory at the University of Alaska Fairbanks)

    ValueDefinition
    NULLBlank (NULL) field values may indicate that either the chemical species was not analyzed or that it was measured but found to be below detection limits.

    Range of values
    Minimum:4
    Maximum:48
    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. (Source: Advanced Instrumentation Laboratory at the University of Alaska Fairbanks)

    ValueDefinition
    NULLBlank (NULL) field values may indicate that either the chemical species was not analyzed or that it was measured but found to be below detection limits.

    Range of values
    Minimum:27
    Maximum:27
    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. (Source: Advanced Instrumentation Laboratory at the University of Alaska Fairbanks)

    ValueDefinition
    NULLBlank (NULL) field values may indicate that either the chemical species was not analyzed or that it was measured but found to be below detection limits.

    Range of values
    Minimum:57
    Maximum:57
    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: Advanced Instrumentation Laboratory at the University of Alaska Fairbanks)

    ValueDefinition
    NULLBlank (NULL) field values may indicate that either the chemical species was not analyzed or that it was measured but found to be below detection limits.

    Range of values
    Minimum:28
    Maximum:1870
    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. (Source: Advanced Instrumentation Laboratory at the University of Alaska Fairbanks)

    ValueDefinition
    NULLBlank (NULL) field values may indicate that either the chemical species was not analyzed or that it was measured but found to be below detection limits.

    Range of values
    Minimum:57
    Maximum:129
    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: Advanced Instrumentation Laboratory at the University of Alaska Fairbanks)

    ValueDefinition
    NULLBlank (NULL) field values may indicate that either the chemical species was not analyzed or that it was measured but found to be below detection limits.

    Range of values
    Minimum:12
    Maximum:397
    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. (Source: Advanced Instrumentation Laboratory at the University of Alaska Fairbanks)

    ValueDefinition
    NULLBlank (NULL) field values may indicate that either the chemical species was not analyzed or that it was measured but found to be below detection limits.

    Range of values
    Minimum:1
    Maximum:145
    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: Advanced Instrumentation Laboratory at the University of Alaska Fairbanks)

    Range of values
    Minimum:11
    Maximum:1440
    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: Advanced Instrumentation Laboratory at the University of Alaska Fairbanks)

    Range of values
    Minimum:3
    Maximum:73
    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. (Source: Advanced Instrumentation Laboratory at the University of Alaska Fairbanks)

    Range of values
    Minimum:1
    Maximum:392
    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. (Source: Advanced Instrumentation Laboratory at the University of Alaska Fairbanks)

    ValueDefinition
    NULLBlank (NULL) field values may indicate that either the chemical species was not analyzed or that it was measured but found to be below detection limits.

    Range of values
    Minimum:1
    Maximum:31
    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. (Source: Advanced Instrumentation Laboratory at the University of Alaska Fairbanks)

    ValueDefinition
    NULLBlank (NULL) field values may indicate that either the chemical species was not analyzed or that it was measured but found to be below detection limits.

    Range of values
    Minimum:1
    Maximum:242
    Units:parts per million

    rdf2014-3-stream-sed-trace-element.csv, rdf2014-3-stream-sed-trace-element-limits.csv
    Trace-element analysis of stream-sediment and soil samples.. (Source: Alaska Division of Geological & Geophysical Surveys)

    SAMPLE
    Label assigned to identify the sample. (Source: Alaska Division of Geological & Geophysical Surveys)

    Generic example of a sample identifier: YYAAA9999X: 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, DR = David A. Reioux, EB = Erik N. Bachmann, ET = Evan Twelker, KS = Karri R. Sicard, LF = Larry K. Freeman, RN = Rainer J. Newberry, CW = Thomas C. Wright

    LATITUDE
    Latitude, WGS84 (Source: Alaska Division of Geological & Geophysical Surveys)

    Range of values
    Minimum:61.4623
    Maximum:63.3726335
    Units:decimal degrees

    LONGITUDE
    Longitude, WGS84 (Source: Alaska Division of Geological & Geophysical Surveys)

    Range of values
    Minimum:-149.8455092
    Maximum:-139.47687
    Units:decimal degrees

    WEIGHT_KG
    Sample weight (as received by the lab) in kilograms (Source: Alaska Division of Geological & Geophysical Surveys and ALS minerals)

    Range of values
    Minimum:1.19
    Maximum:3.84
    Units:kilograms

    BATCH_NUMBER
    Number provided by the laboratory to identify the samples and analyses included in the work order. (Source: ALS minerals)

    FA14005003

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

    ValueDefinition
    NULLWe do not provide a description of the sample.

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

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

    ValueDefinition
    NULLThe estimated average width of stream at the sample site was not recorded by the sample collector

    Range of values
    Minimum:0.5
    Maximum:30
    Units:meters

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

    ValueDefinition
    NULLThe estimated average depth of stream at the sample site was not recorded by the sample collector

    Range of values
    Minimum:0
    Maximum:20
    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.
    swiftfast moving water, many riffles, bed and bank are composed of cobbles and gravel with minor sand
    slowslow current, few riffles, bed and banks are composed of gravel and sand, minor cobbles and silt, organics may be present
    tumblingstep-wise flows with plunges and pools, bed and banks are composed of boulders and cobbles with minor gravel and finer sediment
    ephemeraldry or nearly dry stream bed

    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
    alluviumNatural unconsolidated aggregate deposited by rivers, streams and creeks
    glacialNatural unconsolidated aggregate deposited by glacial outflow
    colluviumNatural unconsolidated aggregate resulting from down slope movement of loose rocks and soil

    NUM_SITES
    Number of sample sites at the station. (Source: Alaska Division of Geological & Geophysical Surveys and ALS minerals)

    ValueDefinition
    NULLNumber of sample sites at the station was not recorded by the sample collector

    Range of values
    Minimum:1
    Maximum:11
    Units:meters

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

    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.
    boulder/log eddyGravel or sand deposited downstream of an obstruction such as a log or boulder
    point barGravel or sand deposited at the downstream end of a gravel bar
    gravel armorSediment trapped below pebble or cobble pavement at the leading edge of a gravel bar
    plunge poolSand or gravel deposited at the edge of a pool below a water fall
    dry streaminactive or intermittently active stream bed which was dry when the sample was collected
    stagnant poolBody of standing water

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

    ValueDefinition
    NULLNumber of sample sites at the station was not recorded by the sample collector

    Range of values
    Minimum:0
    Maximum:30
    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
    NULLNumber of sample sites at the station was not recorded by the sample collector

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

    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
    weakPrecipitate binds otherwise unconsolidated deposits.
    moderateObscures the color of the stream bed materials.

    Au_ppm
    Gold values measured in parts per million (ppm); Method: Fire Assay - Inductively Coupled Plasma - Atomic Emission Spectroscopy (FA-ICP-AES); Lower detection limit = 0.001 ppm; Upper detection limit = 1 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Minerals)

    Range of values
    Minimum:0.001
    Maximum:0.194
    Units:parts per million

    Pt_ppm
    Platinum values measured in parts per million (ppm); Method: Fire Assay - Inductively Coupled Plasma - Atomic Emission Spectroscopy (FA-ICP-AES); Lower detection limit = 0.0005 ppm; Upper detection limit = 1 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Minerals)

    ValueDefinition
    -1Below detection limit.

    Range of values
    Minimum:0.0005
    Maximum:0.0613
    Units:parts per million

    Pd_ppm
    Palladium values measured in parts per million (ppm); Method: Fire Assay - Inductively Coupled Plasma - Atomic Emission Spectroscopy (FA-ICP-AES); Lower detection limit = 0.001 ppm; Upper detection limit = 1 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Minerals)

    ValueDefinition
    -1Below detection limit.

    Range of values
    Minimum:0.001
    Maximum:0.07
    Units:parts per million

    Ag_ppm
    Silver values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy - Mass Spectrometry (ICP-AES-MS), HF-HNO3 -HClO4 Acid Digestion, HCl Leach; Lower detection limit = 0.01 ppm; Upper detection limit = 100 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Minerals)

    Range of values
    Minimum:0.02
    Maximum:0.49
    Units:parts per million

    Al_ppm
    Aluminum values measured in percent (pct); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy - Mass Spectrometry (ICP-AES-MS), HF-HNO3 -HClO4 Acid Digestion, HCl Leach; 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: ALS Minerals)

    Range of values
    Minimum:4.78
    Maximum:8.64
    Units:percent

    As_ppm
    Arsenic values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy - Mass Spectrometry (ICP-AES-MS), HF-HNO3 -HClO4 Acid Digestion, HCl Leach; 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: ALS Minerals)

    Range of values
    Minimum:0.9
    Maximum:202
    Units:parts per million

    Ba_ppm
    Barium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy - Mass Spectrometry (ICP-AES-MS), HF-HNO3 -HClO4 Acid Digestion, HCl Leach; Lower detection limit = 10 ppm; Upper detection limit = 10000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Minerals)

    Range of values
    Minimum:80
    Maximum:1000
    Units:parts per million

    Be_ppm
    Beryllium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy - Mass Spectrometry (ICP-AES-MS), HF-HNO3 -HClO4 Acid Digestion, HCl Leach; 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: ALS Minerals)

    Range of values
    Minimum:0.39
    Maximum:3
    Units:parts per million

    Bi_ppm
    Bismuth values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy - Mass Spectrometry (ICP-AES-MS), HF-HNO3 -HClO4 Acid Digestion, HCl Leach; 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: ALS Minerals)

    Range of values
    Minimum:0.03
    Maximum:6.67
    Units:parts per million

    Ca_ppm
    Calcium values measured in percent (pct); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy - Mass Spectrometry (ICP-AES-MS), HF-HNO3 -HClO4 Acid Digestion, HCl Leach; 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: ALS Minerals)

    Range of values
    Minimum:0.88
    Maximum:7
    Units:percent

    Cd_ppm
    Cadmium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy - Mass Spectrometry (ICP-AES-MS), HF-HNO3 -HClO4 Acid Digestion, HCl Leach; Lower detection limit = 0.02 ppm; Upper detection limit = 1000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Minerals)

    Range of values
    Minimum:0.05
    Maximum:2.4
    Units:parts per million

    Ce_ppm
    Cerium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy - Mass Spectrometry (ICP-AES-MS), HF-HNO3 -HClO4 Acid Digestion, HCl Leach; Lower detection limit = 0.01 ppm; Upper detection limit = 500 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Minerals)

    Range of values
    Minimum:12.75
    Maximum:113
    Units:parts per million

    Co_ppm
    Cobalt values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy - Mass Spectrometry (ICP-AES-MS), HF-HNO3 -HClO4 Acid Digestion, HCl Leach; 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: ALS Minerals)

    Range of values
    Minimum:6.5
    Maximum:70.6
    Units:parts per million

    Cr_ppm
    Chromium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy - Mass Spectrometry (ICP-AES-MS), HF-HNO3 -HClO4 Acid Digestion, HCl Leach; Lower detection limit = 1 ppm; Upper detection limit = 10000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Minerals)

    Range of values
    Minimum:16
    Maximum:9570
    Units:parts per million

    Cs_ppm
    Cesium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy - Mass Spectrometry (ICP-AES-MS), HF-HNO3 -HClO4 Acid Digestion, HCl Leach; Lower detection limit = 0.05 ppm; Upper detection limit = 500 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Minerals)

    Range of values
    Minimum:0.22
    Maximum:5.68
    Units:parts per million

    Cu_ppm
    Copper values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy - Mass Spectrometry (ICP-AES-MS), HF-HNO3 -HClO4 Acid Digestion, HCl Leach; 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: ALS Minerals)

    Range of values
    Minimum:13.4
    Maximum:444
    Units:parts per million

    Fe_ppm
    Iron values measured in percent (pct); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy - Mass Spectrometry (ICP-AES-MS), HF-HNO3 -HClO4 Acid Digestion, HCl Leach; 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: ALS Minerals)

    Range of values
    Minimum:2.2
    Maximum:11.25
    Units:percent

    Ga_ppm
    Gallium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy - Mass Spectrometry (ICP-AES-MS), HF-HNO3 -HClO4 Acid Digestion, HCl Leach; Lower detection limit = 0.05 ppm; Upper detection limit = 10000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Minerals)

    Range of values
    Minimum:11.85
    Maximum:21.6
    Units:parts per million

    Ge_ppm
    Germanium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy - Mass Spectrometry (ICP-AES-MS), HF-HNO3 -HClO4 Acid Digestion, HCl Leach; Lower detection limit = 0.05 ppm; Upper detection limit = 500 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Minerals)

    ValueDefinition
    -1Below detection limit.

    Range of values
    Minimum:0.05
    Maximum:0.27
    Units:parts per million

    Hf_ppm
    Hafnium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy - Mass Spectrometry (ICP-AES-MS), HF-HNO3 -HClO4 Acid Digestion, HCl Leach; Lower detection limit = 0.1 ppm; Upper detection limit = 500 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Minerals)

    Range of values
    Minimum:0.2
    Maximum:3.8
    Units:parts per million

    In_ppm
    Indium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy - Mass Spectrometry (ICP-AES-MS), HF-HNO3 -HClO4 Acid Digestion, HCl Leach; Lower detection limit = 0.005 ppm; Upper detection limit = 500 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Minerals)

    Range of values
    Minimum:0.024
    Maximum:0.103
    Units:parts per million

    K_ppm
    Potassium values measured in percent (pct); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy - Mass Spectrometry (ICP-AES-MS), HF-HNO3 -HClO4 Acid Digestion, HCl Leach; 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: ALS Minerals)

    Range of values
    Minimum:0.15
    Maximum:1.94
    Units:percent

    La_ppm
    Lanthanum values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy - Mass Spectrometry (ICP-AES-MS), HF-HNO3 -HClO4 Acid Digestion, HCl Leach; 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: ALS Minerals)

    Range of values
    Minimum:5.7
    Maximum:56.6
    Units:parts per million

    Li_ppm
    Lithium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy - Mass Spectrometry (ICP-AES-MS), HF-HNO3 -HClO4 Acid Digestion, HCl Leach; 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: ALS Minerals)

    Range of values
    Minimum:5
    Maximum:76.4
    Units:parts per million

    Mg_ppm
    Magnesium values measured in percent (pct); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy - Mass Spectrometry (ICP-AES-MS), HF-HNO3 -HClO4 Acid Digestion, HCl Leach; 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: ALS Minerals)

    Range of values
    Minimum:0.51
    Maximum:8.23
    Units:percent

    Mn_ppm
    Manganese values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy - Mass Spectrometry (ICP-AES-MS), HF-HNO3 -HClO4 Acid Digestion, HCl Leach; Lower detection limit = 5 ppm; Upper detection limit = 100000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Minerals)

    Range of values
    Minimum:418
    Maximum:2790
    Units:parts per million

    Mo_ppm
    Molybdenum values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy - Mass Spectrometry (ICP-AES-MS), HF-HNO3 -HClO4 Acid Digestion, HCl Leach; Lower detection limit = 0.05 ppm; Upper detection limit = 10000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Minerals)

    Range of values
    Minimum:0.29
    Maximum:12.6
    Units:parts per million

    Na_ppm
    Sodium values measured in percent (pct); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy - Mass Spectrometry (ICP-AES-MS), HF-HNO3 -HClO4 Acid Digestion, HCl Leach; 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: ALS Minerals)

    Range of values
    Minimum:0.93
    Maximum:2.77
    Units:percent

    Nb_ppm
    Niobium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy - Mass Spectrometry (ICP-AES-MS), HF-HNO3 -HClO4 Acid Digestion, HCl Leach; Lower detection limit = 0.1 ppm; Upper detection limit = 500 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Minerals)

    Range of values
    Minimum:2
    Maximum:15.7
    Units:parts per million

    Ni_ppm
    Nickel values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy - Mass Spectrometry (ICP-AES-MS), HF-HNO3 -HClO4 Acid Digestion, HCl Leach; Lower detection limit = 0.2 ppm; Upper detection limit = 100000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Minerals)

    Range of values
    Minimum:5.9
    Maximum:1020
    Units:parts per million

    P_ppm
    Phosphorus values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy - Mass Spectrometry (ICP-AES-MS), HF-HNO3 -HClO4 Acid Digestion, HCl Leach; Lower detection limit = 10 ppm; Upper detection limit = 10000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Minerals)

    Range of values
    Minimum:290
    Maximum:2010
    Units:parts per million

    Pb_ppm
    Lead values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy - Mass Spectrometry (ICP-AES-MS), HF-HNO3 -HClO4 Acid Digestion, HCl Leach; 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: ALS Minerals)

    Range of values
    Minimum:1.8
    Maximum:31.5
    Units:parts per million

    Rb_ppm
    Rubidium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy - Mass Spectrometry (ICP-AES-MS), HF-HNO3 -HClO4 Acid Digestion, HCl Leach; 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: ALS Minerals)

    Range of values
    Minimum:2.4
    Maximum:58.5
    Units:parts per million

    Re_ppm
    Rhenium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy - Mass Spectrometry (ICP-AES-MS), HF-HNO3 -HClO4 Acid Digestion, HCl Leach; Lower detection limit = 0.002 ppm; Upper detection limit = 50 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Minerals)

    ValueDefinition
    -1Below detection limit.

    Range of values
    Minimum:0.002
    Maximum:0.008
    Units:parts per million

    S_ppm
    Sulfur values measured in percent (pct); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy - Mass Spectrometry (ICP-AES-MS), HF-HNO3 -HClO4 Acid Digestion, HCl Leach; 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: ALS Minerals)

    ValueDefinition
    -1Below detection limit.

    Range of values
    Minimum:0.01
    Maximum:0.54
    Units:percent

    Sb_ppm
    Antimony values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy - Mass Spectrometry (ICP-AES-MS), HF-HNO3 -HClO4 Acid Digestion, HCl Leach; Lower detection limit = 0.05 ppm; Upper detection limit = 10000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Minerals)

    Range of values
    Minimum:0.19
    Maximum:12.8
    Units:parts per million

    Sc_ppm
    Scandium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy - Mass Spectrometry (ICP-AES-MS), HF-HNO3 -HClO4 Acid Digestion, HCl Leach; 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: ALS Minerals)

    Range of values
    Minimum:6.8
    Maximum:41.9
    Units:parts per million

    Se_ppm
    Selenium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy - Mass Spectrometry (ICP-AES-MS), HF-HNO3 -HClO4 Acid Digestion, HCl Leach; Lower detection limit = 1 ppm; Upper detection limit = 1000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Minerals)

    Range of values
    Minimum:1
    Maximum:4
    Units:parts per million

    Sn_ppm
    Tin values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy - Mass Spectrometry (ICP-AES-MS), HF-HNO3 -HClO4 Acid Digestion, HCl Leach; Lower detection limit = 0.2 ppm; Upper detection limit = 500 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Minerals)

    Range of values
    Minimum:0.4
    Maximum:4.1
    Units:parts per million

    Sr_ppm
    Strontium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy - Mass Spectrometry (ICP-AES-MS), HF-HNO3 -HClO4 Acid Digestion, HCl Leach; 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: ALS Minerals)

    Range of values
    Minimum:120
    Maximum:595
    Units:parts per million

    Ta_ppm
    Tantalum values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy - Mass Spectrometry (ICP-AES-MS), HF-HNO3 -HClO4 Acid Digestion, HCl Leach; Lower detection limit = 0.05 ppm; Upper detection limit = 100 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Minerals)

    Range of values
    Minimum:0.13
    Maximum:1.19
    Units:parts per million

    Te_ppm
    Tellurium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy - Mass Spectrometry (ICP-AES-MS), HF-HNO3 -HClO4 Acid Digestion, HCl Leach; Lower detection limit = 0.05 ppm; Upper detection limit = 500 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Minerals)

    ValueDefinition
    -1Below detection limit.

    Range of values
    Minimum:0.05
    Maximum:2
    Units:parts per million

    Th_ppm
    Thorium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy - Mass Spectrometry (ICP-AES-MS), HF-HNO3 -HClO4 Acid Digestion, HCl Leach; 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: ALS Minerals)

    Range of values
    Minimum:0.7
    Maximum:22.2
    Units:parts per million

    Ti_ppm
    Titanium values measured in percent (pct); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy - Mass Spectrometry (ICP-AES-MS), HF-HNO3 -HClO4 Acid Digestion, HCl Leach; Lower detection limit = 0.005 pct; Upper detection limit = 10 pct; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Minerals)

    Range of values
    Minimum:0.163
    Maximum:1.49
    Units:percent

    Tl_ppm
    Thallium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy - Mass Spectrometry (ICP-AES-MS), HF-HNO3 -HClO4 Acid Digestion, HCl Leach; Lower detection limit = 0.02 ppm; Upper detection limit = 10000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Minerals)

    ValueDefinition
    -1Below detection limit.

    Range of values
    Minimum:0.02
    Maximum:0.66
    Units:parts per million

    U_ppm
    Uranium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy - Mass Spectrometry (ICP-AES-MS), HF-HNO3 -HClO4 Acid Digestion, HCl Leach; 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: ALS Minerals)

    Range of values
    Minimum:0.3
    Maximum:122.5
    Units:parts per million

    V_ppm
    Vanadium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy - Mass Spectrometry (ICP-AES-MS), HF-HNO3 -HClO4 Acid Digestion, HCl Leach; Lower detection limit = 1 ppm; Upper detection limit = 10000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Minerals)

    Range of values
    Minimum:41
    Maximum:468
    Units:parts per million

    W_ppm
    Tungsten values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy - Mass Spectrometry (ICP-AES-MS), HF-HNO3 -HClO4 Acid Digestion, HCl Leach; 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: ALS Minerals)

    Range of values
    Minimum:0.1
    Maximum:39.9
    Units:parts per million

    Y_ppm
    Yttrium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy - Mass Spectrometry (ICP-AES-MS), HF-HNO3 -HClO4 Acid Digestion, HCl Leach; Lower detection limit = 0.1 ppm; Upper detection limit = 500 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Minerals)

    Range of values
    Minimum:9.1
    Maximum:44.4
    Units:parts per million

    Zn_ppm
    Zinc values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy - Mass Spectrometry (ICP-AES-MS), HF-HNO3 -HClO4 Acid Digestion, HCl Leach; Lower detection limit = 2 ppm; Upper detection limit = 10000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Minerals)

    Range of values
    Minimum:35
    Maximum:494
    Units:parts per million

    Zr_ppm
    Zirconium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy - Mass Spectrometry (ICP-AES-MS), HF-HNO3 -HClO4 Acid Digestion, HCl Leach; 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: ALS Minerals)

    Range of values
    Minimum:3.9
    Maximum:163
    Units:parts per million


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?

    This program of stream-sediment, pan-concentrate, and rock sampling was conducted as part of the State's Strategic Minerals Assessment project, an initiative designed to evaluate Alaska's potential for rare-earth elements, PGEs, and other similarly supply-challenged resources. This project is funded by the Alaska State Legislature and managed by 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
    GIS Manager
    3354 College Road
    Fairbanks, AK 99709-3707
    USA

    (907)451-5020 (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?

Mineral-resources geologists from the Alaska Division of Geological & Geophysical Surveys (DGGS) carried out a helicopter-supported geological and geochemical resource assessment project in the Gulkana, Healy, Mount Hayes, and Talkeetna Mountains quadrangles from July 29 through August 16, 2013. The objectives of this assessment were to improve the publicly-available geological, geophysical, and geochemical data in the area of known occurrences in the Mount Hayes Quadrangle, and to extend this coverage and any gained insight westward into the less-explored extension of the Wrangellia terrane. This program of stream-sediment, pan-concentrate, and rock sampling was conducted as part of the State's Strategic Minerals Assessment project, an initiative designed to evaluate Alaska's potential for rare-earth elements, PGEs, and other similarly supply-challenged resources. The analytical data tables associated with this report are being released in digital format as comma-delimited text (CSV) files.


How was the data set created?

  1. From what previous works were the data drawn?

  2. How were the data generated, processed, and modified?

    Date: 2013 (process 1 of 12)
    Rock sample collection - Rock samples were collected for two different purposes. Samples of visibly mineralized or altered rock were preferentially collected and analyzed for trace-element geochemistry. Most samples are "grab" samples, which were randomly collected at a location; however, a few samples are "select" samples, which were deliberately collected from a specific feature, as noted in the sample field description. Igneous and meta-igneous rocks showing little alteration or weathering were collected for whole-rock major-oxide, minor-oxide, and trace-element analyses to aid in classification and study of petrogenesis and tectonic setting. For fine-grained rocks, whole-rock analyses were performed by direct XRF of rock slabs.

    Date: 2013 (process 2 of 12)
    Stream-sediment sample collection - Stream-sediment sample locations were selected either to characterize stream sediments draining known Ni-Cu-PGE occurrences, or to target areas with similar prospective geology, geophysical signature, or geochemistry. In the field, sample areas were selected by visual inspection from the helicopter, and were based on the availability of sample material and a suitable landing zone. Stream sediment samples were taken from over-bank flood deposits, moss mats, or other fine sediment. Samples were collected with a shovel and wet screened to -10 mesh, then bagged in permeable cloth sample bags and air dried at camp. To ensure a sufficient volume of fine sediment, 7x12 inch sample bags were filled to capacity.

    Date: 2013 (process 3 of 12)
    Pan-concentrate sample collection - Pan-concentrate sampling targeted, in order of decreasing preference: gravel/cobble-armored riffles, log/boulder/plunge-pool eddies, gravel/cobble-armored point bars, point bars, overbank flood deposits, and moss mats. Samples were collected with a shovel and screened using a Garretts Combination Sifter with a 0.483-inch, square-hole mesh. The resulting undersized material was collected in a 14-inch-diameter Garrett's Gold Trap gold pan. Sediments were screened until the gold pan was level full with -0.483-inch material. Using alternating shaking and washing motions, the sediment was reduced to visible heavy minerals or a volume of approximately 30 ml. This concentrate was then washed into Nasco Whirl-Pak plastic sample bags and placed in a cloth bag.

    Date: 2013 (process 4 of 12)
    Rock sample preparation - Rock samples were processed by ALS Minerals using their PREP-31 package. The samples were crushed to better than 70 percent passing 2 mm, and a 250 g split was pulverized to better than 85 percent passing 75 microns. Prior to crushing, samples for whole-rock analysis were trimmed by DGGS staff to remove weathering, and cut surfaces were sanded to remove any saw metal.

    Date: 2013 (process 5 of 12)
    Slab XRF sample preparation - Slab XRF samples were cut into rough discs 4 cm in diameter and polished on a lapidary wheel.

    Date: 2013 (process 6 of 12)
    Stream-sediment sample preparation - Stream-sediment samples were submitted to ALS Minerals and prepped by the PREP-41 package. Samples were logged, air-dried at low temperature, and dry-sieved to -180 microns (-80 mesh). The fine fraction was further pulverized prior to analysis.

    Date: 2013 (process 7 of 12)
    Pan-concentrate sample preparation - Pan-concentrate samples were dried at DGGS using a drying oven and disposable paper trays, split using a Sepor splitter, and then pulverized to better than 85 percent passing 75 microns by ALS Minerals (PREP-31 package).

    Date: 2013 (process 8 of 12)
    Analysis of major- and trace-element compositions for stream-sediment, pan-concentrate, and rock samples - Major- and trace-element compositions for stream-sediment, pan-concentrate, and rock samples were determined by ALS Minerals method ME-ICP61: Four-acid digestion followed by inductively coupled plasma-atomic absorption spectrometry (ICP-AES) and inductively coupled plasma-mass spectroscopy (ICP-MS).

    Date: 2013 (process 9 of 12)
    Analysis of platinum, palladium, and gold values for stream-sediment, pan-concentrate, and rock samples - Platinum, palladium, and gold values were analyzed by 30 g fire assay with ICP-MS finish (ALS Minerals method PGM-MS23) for all samples except slab XRF.

    Date: 2013 (process 10 of 12)
    Whole-rock geochemistry analysis - For whole-rock geochemistry samples, major and minor oxides were analyzed by lithium metaborate fusion digestion and ICP-AES (ALS Minerals method ME-ICP06). Trace elements, including rare-earth elements, were determined using lithium metaborate fusion digestion and ICP-MS (ALS Minerals method ME-MS81). Ag, Cd, Co, Cu, Li, Mo, Ni, Pb, Sc, and Zn were determined by four-acid digestion and ICP-AES (ALS Minerals method ME-4ACD81); and As, Bi, Hg, Sb, Se, and Te were determined by aqua regia digestion followed by ICP-MS (ALS Minerals method ME-MS42). Total C and S were analyzed by Leco furnace (ALS Minerals method ME-IR08).

    Date: 2013 (process 11 of 12)
    Reanalysis of samples that exceeded detection limits for gold, silver, copper, nickel, platinum, and palladium - Samples that exceeded detection limits for elements of interest were reanalyzed using specific elemental tests. Over-limit values for Ag, Cu, and Ni were reanalyzed using four-acid digestion and ICP-AES (ALS Minerals procedure ME-OG62): Over-limit values for Au were reanalyzed by 30 g fire assay with atomic absorption (AA) finish (ALS Minerals procedure Au-AA25). Over-limit values for Pt and Pd were reanalyzed by 30 g fire assay with ICP-AES finish (ALS Minerals procedure PGM-ICP27).

    Date: 2013 (process 12 of 12)
    Slab XRF analysis - For slab XRF samples, polished sample slabs were directly analyzed using the PANalytical Axios wavelength-dispersive XRF and SuperQ software at the University of Alaska Fairbanks. Nb, Rb, Sr, Y, and Zr were measured using the 37mmRbSrYZr analytical routine; other elements were measured with the IQ+37mmVac analytical routine. The 37mmRbSrYZr routine uses specific predetermined peak and background positions for which X-ray intensities are measured for 2-800 seconds (depending on the element). The intensity of the Rh Compton peak is used to estimate mass-absorption coefficients (MACs) for both unknowns and well-characterized natural standards. Peak intensities are computed and converted to concentrations using calibration curves employing at least ten natural rock standards. These procedures are routinely checked by analysis of secondary natural standards that were not em-ployed in making the calibration curves. Elemental abundances are typically within 2-5% of the amount present for concentrations >10 times the detection limit; within 5-10% of the amount present for concentrations 4-10 times the detection limit and within 30% of the amount present for concentrations near the detection limit. The IQ37mmVac program scans over a series of energies corresponding to a range from Ce K-alpha to O K-alpha. Peak heights and backgrounds, and X-ray elemental interferences are picked with the software and checked manually to ensure quality control. Elemental abundances for all elements with atomic numbers between 8 and 92 are estimated from artificial standards; these estimations are used to calculate MACs for each element present above the detection limit. Revised concentrations are employed to calculate revised MACs until a stable solution is determined. Elemental abundances are then normalized to 100%. The software is routinely checked using pressed pellets of well-characterized natural rock standards. Elemental abundances are within 1-2% of the amount present for major elements, 2-5% of the amount present for minor elements, and 5-10% of the amount present for trace elements.

  3. What similar or related data should the user be aware of?

    Burns, L.E., CGG, and Fugro GeoServices, Inc., 2014, Wrangellia survey area: Airborne magnetic and electromagnetic data in line (point), grid, vector, and map formats, Talkeetna Mountains, Healy, and Mt. Hayes quadrangles, south-central Alaska: Geophysical Report GPR 2014-1, Alaska Division of Geological & Geophysical Surveys, Fairbanks, Alaska, United States.

    Online Links:

    Other_Citation_Details: 56 sheets, 1 DVD, scale 1:63,360


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. In the case of slab XRF analysis, we report measured values which are above or below instrument detection limits when they are provided to us by the originating lab. Null values in the slab XRF tables indicate that the chemical species was below detection limits. NULL values in the tables from ALS minerals tables indicate that the analysis was not ordered for the sample. Users should contact the originating labs for additional information about detection limits and reporting procedures. Brief sample descriptions are based principally on field observations with some thin-section details added. Prior to publication, DGGS staff reconciled sample numbering discrepancies between lab sample numbers and field data records. All sample sample numbers reported in this release have been standardized to be consistent and may differ slightly with the sample numbers listed on the Certificate of Assay.

  2. How accurate are the geographic locations?

    Location data were collected using Trimble Juno T41/5 WAAS-enabled GPS devices running ArcGIS for Windows Mobile. Data were merged into an ArcGIS geodatabase. WAAS-enabled GPS devices have a reported error of about 1 m. Latitude and longitude are reported in the WGS84 datum. Note that sample number 13ET500 was collected from Nickel Creek, 1.5 miles below the Wellgreen deposit, Yukon Territory, Canada.

  3. How accurate are the heights or depths?

  4. Where are the gaps in the data? What is missing?

    A few samples were found to have erroneous or suspect field location coordinates/sample identification labels and were excluded from this report.

  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 2014-3

  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: 17-Apr-2014
Metadata author:
Alaska Division of Geological & Geophysical Surveys
Metadata Manager
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 Apr 17 13:14:25 2014