Major-oxide, minor-oxide, and trace-element geochemical data from rocks in the Styx River area, Lime Hills C-1 Quadrangle, Lime Hills, McGrath, Talkeetna, and Tyonek quadrangles, Alaska

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What does this data set describe?

Title:
Major-oxide, minor-oxide, and trace-element geochemical data from rocks in the Styx River area, Lime Hills C-1 Quadrangle, Lime Hills, McGrath, Talkeetna, and Tyonek quadrangles, Alaska
Abstract:
Geologists from the Alaska Division of Geological & Geophysical Surveys (DGGS) Mineral Resources Section conducted four weeks of helicopter-supported mapping and fieldwork from June 26 through July 24, 2013. The Styx River project in the Lime Hills C-1 Quadrangle was part of the State-funded Airborne Geophysical/Geological Mineral Inventory (AGGMI) program 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 Styx River project area has active and ongoing mineral exploration for deposit types including porphyry copper/molybdenum/gold, reduced intrusion-related gold, and polymetallic veins. Lead-zinc skarns, molybdenum-bearing quartz veins, sediment-hosted base-metal, platinum-group-element, and rare-earth-element deposit types are also present. This report provides new, publicly-available geological and geochemical data in the vicinity of known mineral occurrences throughout the project area. Samples were analyzed for a variety of suites of major and trace elements depending on the sample type. 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 >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
  1. How should this data set be cited?

    Sicard, K.R., Wypych, Alicja, Twelker, Evan, Bachmann, E.N., Freeman, L.K., Newberry, R.J., Reioux, D.A., Tuzzolino, A.L., and Wright, T.C., 2014, Major-oxide, minor-oxide, and trace-element geochemical data from rocks in the Styx River area, Lime Hills C-1 Quadrangle, Lime Hills, McGrath, Talkeetna, and Tyonek quadrangles, Alaska: Raw Data File RDF 2014-6, Alaska Division of Geological & Geophysical Surveys, Fairbanks, Alaska, United States.

    Online Links:

    Other_Citation_Details: 5 p.

  2. What geographic area does the data set cover?

    West_Bounding_Coordinate: -153.709196
    East_Bounding_Coordinate: -152.733377
    North_Bounding_Coordinate: 62.285506
    South_Bounding_Coordinate: 61.513897

  3. What does it look like?

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

    Beginning_Date: 2013
    Ending_Date: 2014
    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 0.000001. Longitudes are given to the nearest 0.000001. 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?

    rdf2014-6-border.shp
    A polygon that encompasses the maximum geographic extent of the data observations (Source: Alaska Division of Geological & Geophysical Surveys)

    rdf2014-6-rock-major-minor-oxide-trace-element-ree.csv, rdf2014-6-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:61.52103517
    Maximum:62.28523421
    Units:decimal degrees

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

    Range of values
    Minimum:-153.3583588
    Maximum:-152.7333768
    Units:decimal degrees

    LAB_SAMPLE_NUMBER
    Label used by the lab to identify the sample. (Source: Alaska Division of Geological & Geophysical Surveys and ALS minerals)

    ValueDefinition
    NULLThe lab sample number is identical to the sample number.

    The lab sample number is typically identical to the sample number. However, in some cases, the sample number used by the lab does differ from the published sample number. We provide both numbers to document instances in which the sample numbers listed on the Certificate of Assay or other laboratory results files were non-standard or found to be incorrect.

    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:0.57
    Maximum:4.16
    Units:kilograms

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

    FA14016194

    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: 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:44.8
    Maximum:78.5
    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:5.15
    Maximum:19.05
    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:0.58
    Maximum:13.4
    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:0.31
    Maximum:9.56
    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:0.01
    Maximum:19.75
    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:0.53
    Maximum:4.66
    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:1.11
    Maximum:5.43
    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:0.18
    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:0.05
    Maximum:2.7
    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:0.01
    Maximum:0.42
    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)

    ValueDefinition
    -1Below detection limit.

    Range of values
    Minimum:0.01
    Maximum:0.94
    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:0.18
    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:0.16
    Units:percent

    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:0.2
    Maximum:7.29
    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. Note: the reported values may be slightly above or below 100% due to uncertainties in the measurements or calculation assumptions. (Source: ALS Minerals)

    Range of values
    Minimum:98
    Maximum:101.96
    Units:percent

    Ag_ppm
    Silver values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy (ICP-AES), HNO3 -HClO4 -HF-HCl Digestion, HCl Leach; 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.

    Range of values
    Minimum:0.8
    Maximum:1.1
    Units:parts per million

    Al_pct
    Aluminum values measured in percent (pct); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy (ICP-AES), HNO3 -HClO4 -HF-HCl 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:2.87
    Maximum:8.24
    Units:percent

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

    ValueDefinition
    -1Below detection limit.

    Range of values
    Minimum:5
    Maximum:34
    Units:parts per million

    Ba_ppm_1
    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:19.2
    Maximum:1465
    Units:parts per million

    Ba_ppm_2
    Barium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy (ICP-AES), HNO3 -HClO4 -HF-HCl 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:20
    Maximum:1510
    Units:parts per million

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

    Range of values
    Minimum:0.6
    Maximum:7.1
    Units:parts per million

    Bi_ppm
    Bismuth values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy (ICP-AES), HNO3 -HClO4 -HF-HCl 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:2
    Maximum:30
    Units:parts per million

    Ca_pct
    Calcium values measured in percent (pct); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy (ICP-AES), HNO3 -HClO4 -HF-HCl 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:0.23
    Maximum:6.69
    Units:percent

    Cd_ppm
    Cadmium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy (ICP-AES), HNO3 -HClO4 -HF-HCl 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:1.2
    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:21.1
    Maximum:148
    Units:parts per million

    Co_ppm
    Cobalt values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy (ICP-AES), HNO3 -HClO4 -HF-HCl 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:77
    Units:parts per million

    Cr_ppm_1
    Chromium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Mass Spectroscopy (ICP-MS), Lithium Metaborate Fusion; 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:10
    Maximum:1310
    Units:parts per million

    Cr_ppm_2
    Chromium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy (ICP-AES), HNO3 -HClO4 -HF-HCl 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:5
    Maximum:809
    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:0.21
    Maximum:18.25
    Units:parts per million

    Cu_ppm
    Copper values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy (ICP-AES), HNO3 -HClO4 -HF-HCl 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:291
    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:1.5
    Maximum:16.2
    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:0.79
    Maximum:8.31
    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:0.05
    Maximum:2.69
    Units:parts per million

    Fe_pct
    Iron values measured in percent (pct); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy (ICP-AES), HNO3 -HClO4 -HF-HCl 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:0.4
    Maximum:9.36
    Units:percent

    Ga_ppm_1
    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:8.2
    Maximum:31.1
    Units:parts per million

    Ga_ppm_2
    Gallium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy (ICP-AES), HNO3 -HClO4 -HF-HCl 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:10
    Maximum:30
    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:2.41
    Maximum:18.3
    Units:parts per million

    Hf_ppm
    Hafnium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Mass Spectroscopy (ICP-MS), Lithium Metaborate Fusion; 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:1.3
    Maximum:10.4
    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:0.29
    Maximum:2.94
    Units:parts per million

    K_pct
    Potassium values measured in percent (pct); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy (ICP-AES), HNO3 -HClO4 -HF-HCl 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:0.88
    Maximum:4.54
    Units:percent

    La_ppm_1
    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:9
    Maximum:77.9
    Units:parts per million

    La_ppm_2
    Lanthanum values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy (ICP-AES), HNO3 -HClO4 -HF-HCl 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:10
    Maximum:60
    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:0.1
    Maximum:1.14
    Units:parts per million

    Mg_pct
    Magnesium values measured in percent (pct); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy (ICP-AES), HNO3 -HClO4 -HF-HCl 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:0.01
    Maximum:12.55
    Units:percent

    Mn_ppm
    Manganese values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy (ICP-AES), HNO3 -HClO4 -HF-HCl 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:41
    Maximum:2990
    Units:parts per million

    Mo_ppm
    Molybdenum values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy (ICP-AES), HNO3 -HClO4 -HF-HCl 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:6
    Units:parts per million

    Na_pct
    Sodium values measured in percent (pct); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy (ICP-AES), HNO3 -HClO4 -HF-HCl 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:0.4
    Maximum:3.39
    Units:percent

    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:3.3
    Maximum:54.6
    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:13.5
    Maximum:63.6
    Units:parts per million

    Ni_ppm
    Nickel values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy (ICP-AES), HNO3 -HClO4 -HF-HCl 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:564
    Units:parts per million

    P_ppm
    Phosphorus values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy (ICP-AES), HNO3 -HClO4 -HF-HCl 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:10
    Maximum:4590
    Units:parts per million

    Pb_ppm
    Lead values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy (ICP-AES), HNO3 -HClO4 -HF-HCl 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:3
    Maximum:112
    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:3.04
    Maximum:15.9
    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:15.8
    Maximum:313
    Units:parts per million

    S_pct
    Sulfur values measured in percent (pct); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy (ICP-AES), HNO3 -HClO4 -HF-HCl 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:0.15
    Units:percent

    Sb_ppm
    Antimony values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy (ICP-AES), HNO3 -HClO4 -HF-HCl Digestion, HCl Leach; 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)

    ValueDefinition
    -1Below detection limit.

    Range of values
    Minimum:5
    Maximum:11
    Units:parts per million

    Sc_ppm
    Scandium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy (ICP-AES), HNO3 -HClO4 -HF-HCl 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:36
    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:3.22
    Maximum:19.1
    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:218
    Units:parts per million

    Sr_ppm_1
    Strontium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Mass Spectroscopy (ICP-MS), Lithium Metaborate Fusion; 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:10.5
    Maximum:1560
    Units:parts per million

    Sr_ppm_2
    Strontium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy (ICP-AES), HNO3 -HClO4 -HF-HCl 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:9
    Maximum:1480
    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)

    Range of values
    Minimum:0.1
    Maximum:5.1
    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:0.29
    Maximum:2.85
    Units:parts per million

    Th_ppm_1
    Thorium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Mass Spectroscopy (ICP-MS), Lithium Metaborate Fusion; 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:1.26
    Maximum:41.9
    Units:parts per million

    Th_ppm_2
    Thorium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy (ICP-AES), HNO3 -HClO4 -HF-HCl Digestion, HCl Leach; Lower detection limit = 20 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:20
    Maximum:40
    Units:parts per million

    Ti_pct
    Titanium values measured in percent (pct); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy (ICP-AES), HNO3 -HClO4 -HF-HCl 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:0.03
    Maximum:1.65
    Units:percent

    Tl_ppm
    Thallium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy (ICP-AES), HNO3 -HClO4 -HF-HCl 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:10
    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:0.1
    Maximum:1.3
    Units:parts per million

    U_ppm_1
    Uranium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Mass Spectroscopy (ICP-MS), Lithium Metaborate Fusion; 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:0.45
    Maximum:13.7
    Units:parts per million

    U_ppm_2
    Uranium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy (ICP-AES), HNO3 -HClO4 -HF-HCl 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:10
    Units:parts per million

    V_ppm_1
    Vanadium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Mass Spectroscopy (ICP-MS), Lithium Metaborate Fusion; 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)

    ValueDefinition
    -1Below detection limit.

    Range of values
    Minimum:5
    Maximum:311
    Units:parts per million

    V_ppm_2
    Vanadium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy (ICP-AES), HNO3 -HClO4 -HF-HCl 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:321
    Units:parts per million

    W_ppm_1
    Tungsten values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Mass Spectroscopy (ICP-MS), Lithium Metaborate Fusion; 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:31
    Units:parts per million

    W_ppm_2
    Tungsten values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy (ICP-AES), HF-HNO3 -HClO4 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:20
    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:8
    Maximum:84.6
    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:0.73
    Maximum:8.16
    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 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:13
    Maximum:253
    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:46
    Maximum:382
    Units:parts per million

    rdf2014-6-rock-trace-element.csv, rdf2014-6-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:61.51938567
    Maximum:61.73790433
    Units:decimal degrees

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

    Range of values
    Minimum:-153.382675
    Maximum:-153.010123
    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:0.18
    Maximum:4.46
    Units:kilograms

    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.

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

    Range of values
    Minimum:0.03
    Maximum:97.3
    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:178
    Maximum:178
    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:0.03
    Maximum:9.09
    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.
    -2Above detection limit.

    Range of values
    Minimum:0.2
    Maximum:4220
    Units:parts per million

    Au_ppm_1
    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 = 10 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:0.004
    Maximum:1.01
    Units:parts per million

    Au_ppm_2
    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:0.925
    Units:parts per million

    Au_ppm_3
    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:1.49
    Maximum:3.45
    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:10
    Maximum:2420
    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:0.05
    Maximum:40.4
    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:0.04
    Maximum:518
    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:0.01
    Maximum:28.1
    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:0.02
    Maximum:670
    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:1.35
    Maximum:104.5
    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:0.1
    Maximum:43.1
    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:2
    Maximum:300
    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:0.21
    Maximum:31.4
    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
    NULLBlank (NULL) field values indicate that this chemical species was not requested or not analyzed.

    Range of values
    Minimum:1.965
    Maximum:3.32
    Units:percent

    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:1.1
    Maximum:9030
    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:0.31
    Maximum:12.2
    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:0.38
    Maximum:47.9
    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:0.36
    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:11.8
    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:0.007
    Maximum:24.4
    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:0.01
    Maximum:5.83
    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:0.6
    Maximum:74.6
    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:1.4
    Maximum:178
    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:6.52
    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:31
    Maximum:13750
    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:0.18
    Maximum:657
    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:0.01
    Maximum:5.71
    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:72.7
    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 = 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:0.3
    Maximum:186
    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:3070
    Units:parts per million

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

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

    Range of values
    Minimum:3.29
    Maximum:3.29
    Units:percent

    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
    -2Above detection limit.

    Range of values
    Minimum:1.1
    Maximum:5880
    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:0.017
    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:0.0005
    Maximum:0.0144
    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:0.6
    Maximum:470
    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:0.145
    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:5.39
    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.

    Range of values
    Minimum:0.06
    Maximum:686
    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:0.2
    Maximum:39.2
    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:57
    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:349
    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:1.9
    Maximum:2470
    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:5.53
    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:31.7
    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:47.4
    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:0.006
    Maximum:0.867
    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:0.04
    Maximum:9.75
    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:25.9
    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:407
    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:0.2
    Maximum:660
    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:0.5
    Maximum:124.5
    Units:parts per million

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

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

    Range of values
    Minimum:1.025
    Maximum:7.74
    Units:percent

    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
    -2Above detection limit.

    Range of values
    Minimum:5
    Maximum:2220
    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:0.8
    Maximum:261
    Units:parts per million

    rdf2014-6-slab-xrf-major-minor-oxide-trace-element.csv, rdf2014-6-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:61.5138965
    Maximum:62.28550617
    Units:decimal degrees

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

    Range of values
    Minimum:-153.7091963
    Maximum:-152.733583
    Units:decimal degrees

    LAB_SAMPLE_NUMBER
    Label used by the lab to identify the sample. (Source: Alaska Division of Geological & Geophysical Surveys and ALS minerals)

    ValueDefinition
    NULLThe lab sample number is identical to the sample number.

    The lab sample number is typically identical to the sample number. However, in some cases, the sample number used by the lab does differ from the published sample number. We provide both numbers to document instances in which the sample numbers listed on the Certificate of Assay or other laboratory results files were non-standard or found to be incorrect.

    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.

    DESCRIP_3
    Extension of the sample or station description for descriptions which are greater than 508 characters in length (Source: Alaska Division of Geological & Geophysical Surveys)

    ValueDefinition
    NULLThe descriptive text is shorter than 508 characters.

    Characters greater than 508 of the sample or station description.

    SiO2_pct
    Silicon dioxide values measured in percent (pct); Method: X-Ray Fluorescence (SLAB-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:45.7
    Maximum:93.1
    Units:percent

    Al2O3_pct
    Aluminum oxide values measured in percent (pct); Method: X-Ray Fluorescence (SLAB-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:3.6
    Maximum:24.6
    Units:percent

    BaO_pct
    Barium oxide values measured in percent (pct); Method: X-Ray Fluorescence (SLAB-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:0.00264
    Maximum:0.789
    Units:percent

    CaO_pct
    Calcium oxide values measured in percent (pct); Method: X-Ray Fluorescence (SLAB-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:0.1
    Maximum:14.3
    Units:percent

    Cl_pct
    Chlorine values measured in parts per million (ppm); Method: X-Ray Fluorescence (SLAB-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:0.00258
    Maximum:5.14
    Units:parts per million

    F_pct
    Fluorine values measured in percent (pct); Method: X-Ray Fluorescence (SLAB-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:0.0435
    Maximum:1.35
    Units:percent

    FeO_pct
    Iron oxide (+2) values measured in percent (pct); Method: X-Ray Fluorescence (SLAB-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:0.2
    Maximum:14.2
    Units:percent

    K2O_pct
    Potassium oxide values measured in percent (pct); Method: X-Ray Fluorescence (SLAB-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:0.2
    Maximum:7.3
    Units:percent

    MgO_pct
    Magnesium oxide values measured in percent (pct); Method: X-Ray Fluorescence (SLAB-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)

    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:0.1
    Maximum:15.5
    Units:percent

    MnO_pct
    Manganese oxide values measured in percent (pct); Method: X-Ray Fluorescence (SLAB-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:0.0045
    Maximum:0.634
    Units:percent

    Na2O_pct
    Sodium oxide values measured in percent (pct); Method: X-Ray Fluorescence (SLAB-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:0.01
    Maximum:7.3
    Units:percent

    P2O5_pct
    Phosphorus oxide values measured in percent (pct); Method: X-Ray Fluorescence (SLAB-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:0.003352
    Maximum:1.224
    Units:percent

    S_pct
    Sulfur values measured in percent (pct); Method: X-Ray Fluorescence (SLAB-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:0.01
    Maximum:1.66
    Units:percent

    TiO2_pct
    Titanium dioxide values measured in percent (pct); Method: X-Ray Fluorescence (SLAB-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:0.02
    Maximum:2.7
    Units:percent

    As_ppm
    Arsenic values measured in parts per million (ppm); Method: X-Ray Fluorescence (SLAB-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:1810
    Units:parts per million

    Bi_ppm
    Bismuth values measured in parts per million (ppm); Method: X-Ray Fluorescence (SLAB-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:152
    Maximum:152
    Units:parts per million

    Ce_ppm
    Cerium values measured in parts per million (ppm); Method: X-Ray Fluorescence (SLAB-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)

    Range of values
    Minimum:6
    Maximum:687
    Units:parts per million

    Cr_ppm
    Chromium values measured in parts per million (ppm); Method: X-Ray Fluorescence (SLAB-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:5
    Maximum:1550
    Units:parts per million

    Cu_ppm
    Copper values measured in parts per million (ppm); Method: X-Ray Fluorescence (SLAB-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:1
    Maximum:372
    Units:parts per million

    Ga_ppm
    Gallium values measured in parts per million (ppm); Method: X-Ray Fluorescence (SLAB-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:42
    Units:parts per million

    La_ppm
    Lanthanum values measured in parts per million (ppm); Method: X-Ray Fluorescence (SLAB-XRF); Lower detection limit = 50 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:108
    Maximum:263
    Units:parts per million

    Mo_ppm
    Molybdenum values measured in parts per million (ppm); Method: X-Ray Fluorescence (SLAB-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:11
    Maximum:38
    Units:parts per million

    Nb_ppm
    Niobium values measured in parts per million (ppm); Method: X-Ray Fluorescence (SLAB-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:65
    Units:parts per million

    Nd_ppm
    Neodymium values measured in parts per million (ppm); Method: X-Ray Fluorescence (SLAB-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:162
    Maximum:380
    Units:parts per million

    Ni_ppm
    Nickel values measured in parts per million (ppm); Method: X-Ray Fluorescence (SLAB-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:1
    Maximum:343
    Units:parts per million

    Pb_ppm
    Lead values measured in parts per million (ppm); Method: X-Ray Fluorescence (SLAB-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:14
    Maximum:409
    Units:parts per million

    Rb_ppm
    Rubidium values measured in parts per million (ppm); Method: X-Ray Fluorescence (SLAB-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:1
    Maximum:981
    Units:parts per million

    Sn_ppm
    Tin values measured in parts per million (ppm); Method: X-Ray Fluorescence (SLAB-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:26
    Maximum:604
    Units:parts per million

    Sr_ppm
    Strontium values measured in parts per million (ppm); Method: X-Ray Fluorescence (SLAB-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:14
    Maximum:1803
    Units:parts per million

    Th_ppm
    Thorium values measured in parts per million (ppm); Method: X-Ray Fluorescence (SLAB-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:11
    Maximum:99
    Units:parts per million

    U_ppm
    Uranium values measured in parts per million (ppm); Method: X-Ray Fluorescence (SLAB-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:11
    Maximum:34
    Units:parts per million

    V_ppm
    Vanadium values measured in parts per million (ppm); Method: X-Ray Fluorescence (SLAB-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:2
    Maximum:533
    Units:parts per million

    W_ppm
    Tungsten values measured in parts per million (ppm); Method: X-Ray Fluorescence (SLAB-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:48
    Maximum:123
    Units:parts per million

    Y_ppm
    Yttrium values measured in parts per million (ppm); Method: X-Ray Fluorescence (SLAB-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:6
    Maximum:110
    Units:parts per million

    Zn_ppm
    Zinc values measured in parts per million (ppm); Method: X-Ray Fluorescence (SLAB-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:11
    Maximum:1520
    Units:parts per million

    Zr_ppm
    Zirconium values measured in parts per million (ppm); Method: X-Ray Fluorescence (SLAB-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:3
    Maximum:540
    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?

    The Styx River project in the Lime Hills C-1 Quadrangle was part of the State-funded Airborne Geophysical/Geological Mineral Inventory (AGGMI) program 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?

The Styx River project area has active and ongoing mineral exploration for deposit types including porphyry copper/molybdenum/gold, reduced intrusion-related gold, and polymetallic veins. Lead-zinc skarns, molybdenum-bearing quartz veins, sediment-hosted base-metal, platinum-group-element, and rare-earth-element deposit types are also present. This report provides new, publicly-available geological and geochemical data in the vicinity of known mineral occurrences throughout the project area.


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 8)
    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 8)
    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. Slab XRF samples were cut into rough discs 4 cm in diameter and polished on a lapidary wheel.

    Date: 2013 (process 3 of 8)
    Analysis of major- and trace-element compositions - Major- and trace-element compositions for rock samples were determined by ALS Minerals method ME-MS61: Four-acid digestion followed by inductively coupled plasma-atomic emission spectroscopy (ICP-AES) and inductively coupled plasma-mass spectroscopy (ICP-MS).

    Date: 2013 (process 4 of 8)
    Analysis of gold values - Gold values were analyzed by 30 g fire assay with ICP-AES finish (ALS Minerals method Au-ICP21) for all the rock geochemistry samples.

    Date: 2013 (process 5 of 8)
    Analysis of platinum, palladium, and gold values - Platinum, palladium, and gold values were analyzed by 30 g fire assay with ICP-MS finish (ALS Minerals method PGM-MS23) for select samples as shown in the data tables. One batch of rock geochemistry samples was analyzed at ALS for a suite of metals that did not include Au, Pt and Pd. The pulps of some of the samples were subsequently reanalyzed at ALS (PGM-MS23 and Au-AA25 ore grade Au 30 g fire assay with atomic absorption AA for over-limit Au values).

    Date: 2013 (process 6 of 8)
    Reanalysis of samples that exceeded detection limits for elements of interest - Samples that exceeded detection limits for elements of interest were reanalyzed using specific elemental tests. Over-limit values for Ag, Cu, Zn and Pb 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).

    Date: 2013 (process 7 of 8)
    Whole-rock geochemistry analysis - Major and minor oxides for whole-rock geochemistry samples were analyzed by lithium metaborate fusion digestion and ICP-AES (ALS Minerals method ME-ICP06), loss on ignition was determined via OA-GRA05 method. Trace elements, including rare-earth elements, were determined using lithium metaborate fusion digestion, and ICP-MS (ALS Minerals method ME-MS81). Metals were determined by four-acid digestion and ICP-AES (ALS Minerals method ME-ICP61).

    Date: 2013 (process 8 of 8)
    Slab XRF analysis - For slab XRF samples, polished sample slabs were directly analyzed using the PANalytical Axios wavelength-dispersive XRF and SuperQâ„¢ 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 employed in making the calibration curves. Elemental abundances are typically within 2-5 percent of the amount present for concentrations >10 times the detection limit; within 5-10 percent of the amount present for concentrations 4-10 times the detection limit; and within 30 percent 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 percent. The software is routinely checked using pressed pellets of well-characterized natural rock standards. Elemental abundances are within 1-2 percent of the amount present for major elements, 2-5 percent of the amount present for minor elements, and 5-10 percent of the amount present for trace elements..

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


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.

  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.

  3. How accurate are the heights or depths?

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

    A few samples sent for analysis were later found to have erroneous or suspect field location coordinates or 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 2014-6

  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: 03-Jun-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 Tue Jun 3 12:55:34 2014