Analyses of historic U.S. Bureau of Mines samples for geochemical trace-element and rare-earth-element data from the Circle mining district, western Crazy Mountains, and the Lime Peak area of the White Mountains, Circle Quadrangle, east-central Alaska

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Title:
Analyses of historic U.S. Bureau of Mines samples for geochemical trace-element and rare-earth-element data from the Circle mining district, western Crazy Mountains, and the Lime Peak area of the White Mountains, Circle Quadrangle, east-central Alaska
Abstract:
This report and digital data release presents 286 new geochemical analyses on historic U.S. Bureau of Mines (USBM) samples, including 93 rock, 110 stream sediment, 52 soil, and 28 heavy mineral concentrate (pan concentrate) samples, as well as 3 samples of indeterminate type. These samples were originally collected as part of studies by the USBM in the Circle mining district, western Crazy Mountains, and Lime Peak area of the White Mountains, Circle Quadrangle, east-central Alaska. Historic USBM sample materials were retrieved by DGGS from the DGGS Geologic Materials Center (GMC), where the USBM samples were transferred as part of the federally funded Minerals Data and Information Rescue in Alaska (MDIRA) program in the late 1990s and early 2000s. The text and analytical data and tables associated with this report are being released in digital format as PDF files and .csv files. We provide analytical data, detection limits and, when available, the method documentation provided to us by the lab. We also provide the sample location in geographic coordinates, the sample material cited by the originating literature, a reference to the originating report, and the type of sample material that was obtained from the archive and sent to the lab.
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
trace-element-ree:    Table with analyses of historic U.S. Bureau of Mines samples for geochemical trace-elements and rare-earth-elements and a table of analytical detection limits for each element
  1. How should this data set be cited?

    Werdon, M.B., and Blessington, M.J., 2014, Analyses of historic U.S. Bureau of Mines samples for geochemical trace-element and rare-earth-element data from the Circle mining district, western Crazy Mountains, and the Lime Peak area of the White Mountains, Circle Quadrangle, east-central Alaska: Raw Data File RDF 2014-7, Alaska Division of Geological & Geophysical Surveys, Fairbanks, Alaska, United States.

    Online Links:

    Other_Citation_Details: 4 p.

  2. What geographic area does the data set cover?

    West_Bounding_Coordinate: -146.902053
    East_Bounding_Coordinate: -144.488998
    North_Bounding_Coordinate: 65.847801
    South_Bounding_Coordinate: 65.402297

  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 0.0001. Longitudes are given to the nearest 0.0001. Latitude and longitude values are specified in decimal degrees.

      The horizontal datum used is North American Datum of 1927.
      The ellipsoid used is Clarke 1866.
      The semi-major axis of the ellipsoid used is 6378206.4.
      The flattening of the ellipsoid used is 1/294.9786982.

  7. How does the data set describe geographic features?

    rdf2014-7-border.shp
    A polygon that encompasses the maximum geographic extent of the data observations (Source: Alaska Division of Geological & Geophysical Surveys)

    rdf2014-7-trace-element-ree.csv, rdf2014-7-trace-element-ree-limits.csv
    Table with analyses of historic U.S. Bureau of Mines samples for geochemical trace-elements and rare-earth-elements and a table of analytical detection limits for each element (Source: Alaska Division of Geological & Geophysical Surveys)

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

    Sample numbers were generated by USBM staff at the time of publication. Users should consult the originating report for additional information about the sample numbering protocols.

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

    ValueDefinition
    NULLSample location is unknown

    Range of values
    Minimum:-146.902053
    Maximum:-144.488998
    Units:decimal degrees

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

    ValueDefinition
    NULLSample location is unknown

    Range of values
    Minimum:65.402297
    Maximum:65.847801
    Units:decimal degrees

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

    The batch numbers assigned by the lab for these results are: FA12138643, FA12138644, FA12138645, FA12138953, and FA12288393

    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.

    SAMPLE_MATERIAL
    Sample media of the original USBM sample. These values where obtained from the originating report. In some cases the originating sample type was not explicitly noted but could be reasonably interpreted from the broader context of the report. (Source: United States Bureau of Mines staff)

    ValueDefinition
    NULLBlank (NULL) field values indicate that this data was not recorded by the sample collector.
    stream sedimentThe sample was acquired from a streambed accumulation of sand, gravel, or other alluvial material.
    rockThe sample was collected from rock chips obtained from outcrops or isolated rocks (float) believed to represent underlying bedrock.
    pan concentrateThe sample was acquired from a streambed accumulation of sand, gravel, or other alluvial material that was subsequently concentrated by screening followed by hand panning the undersize portion.
    soilThe sample was acquired from a surface or subsurface accumulation of soil or other colluvial material.

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

    ValueDefinition
    NULLreceived sample weight was less than 0.02 kilograms

    Range of values
    Minimum:0.003
    Maximum:0.11
    Units:kilograms

    REMARKS
    Additional comments regarding the analysis or sample processing (Source: Alaska Division of Geological & Geophysical Surveys)

    ValueDefinition
    NULLreceived sample weight was less than 0.02 kilograms

    Characters 1 to 254 of a brief description.

    REFERENCE
    Reference to the originating USBM report. (Source: United States Bureau of Mines staff)

    ValueDefinition
    NULLBlank (NULL) field values indicate that this data was not recorded by the sample collector.
    Barker, 1979Barker, J.C., 1979, A trace element study of the Circle mining district, Alaska: U.S. Bureau of Mines Open-File Report 57-79, 74 p.
    Barker, 1984Barker, J.C., 1984, Concentrations of cobalt and other metals in the western Crazy Mountains, interior Alaska: U.S. Bureau of Mines Open-File Report 213-84, 44 p.
    Burton and others, 1984Burton, P.J., Warner, J.D., and Barker, J.C., 1984, Reconnaissance investigation of tin occurrences at Rocky Mountain (Lime Peak), east-central Alaska: U.S. Bureau of Mines Open-File Report 31-85, 44 p.
    Smith and others, 1987Smith, T.E., Pessel, G.H., and Wiltse, M.A., eds., 1987, Mineral assessment of the Lime Peak-Mt. Prindle area, Alaska: Alaska Division of Geological & Geophysical Surveys Miscellaneous Publication 29, 712 p., 13 sheets, scale 1:63,360.

    Ag_ppm_1
    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.
    NULLBlank (NULL) field values indicate that this chemical species was not requested or not analyzed.

    Range of values
    Minimum:0.5
    Maximum:15
    Units:parts per million

    Ag_ppm_2
    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.
    NULLBlank (NULL) field values indicate that this chemical species was not requested or not analyzed.

    Range of values
    Minimum:0.02
    Maximum:20.5
    Units:parts per million

    Al_pct_1
    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)

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

    Range of values
    Minimum:0.31
    Maximum:9.7
    Units:percent

    Al_pct_2
    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)

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

    Range of values
    Minimum:0.09
    Maximum:9.06
    Units:percent

    As_ppm_1
    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.
    NULLBlank (NULL) field values indicate that this chemical species was not requested or not analyzed.

    Range of values
    Minimum:5
    Maximum:1245
    Units:parts per million

    As_ppm_2
    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.
    NULLBlank (NULL) field values indicate that this chemical species was not requested or not analyzed.

    Range of values
    Minimum:2
    Maximum:1235
    Units:parts per million

    Au_ppm
    Gold values measured in parts per million (ppm); Method: Fire Assay - Inductively Coupled Plasma - Atomic Emission Spectroscopy (FA-ICP-AES); Lower detection limit = 0.001 ppm; Upper detection limit = 10 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Minerals)

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

    Range of values
    Minimum:0.001
    Maximum:2.64
    Units:parts per million

    Ba_ppm_1
    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)

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

    Range of values
    Minimum:10
    Maximum:9840
    Units:parts per million

    Ba_ppm_2
    Barium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy - Mass Spectrometry (ICP-AES-MS), HF-HNO3 -HClO4 Acid Digestion, HCl Leach; Lower detection limit = 10 ppm; Upper detection limit = 10000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Minerals)

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

    Range of values
    Minimum:80
    Maximum:8800
    Units:parts per million

    Ba_ppm_3
    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)

    ValueDefinition
    -2Above detection limit.

    Range of values
    Minimum:9.8
    Maximum:9860
    Units:parts per million

    Be_ppm_1
    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)

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

    Range of values
    Minimum:0.5
    Maximum:200
    Units:parts per million

    Be_ppm_2
    Beryllium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy - Mass Spectrometry (ICP-AES-MS), HF-HNO3 -HClO4 Acid Digestion, HCl Leach; Lower detection limit = 0.05 ppm; Upper detection limit = 1000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Minerals)

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

    Range of values
    Minimum:0.07
    Maximum:4.29
    Units:parts per million

    Bi_ppm_1
    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.
    NULLBlank (NULL) field values indicate that this chemical species was not requested or not analyzed.

    Range of values
    Minimum:2
    Maximum:121
    Units:parts per million

    Bi_ppm_2
    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)

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

    Range of values
    Minimum:0.01
    Maximum:1.14
    Units:parts per million

    Ca_pct_1
    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)

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

    Range of values
    Minimum:0.01
    Maximum:22.8
    Units:percent

    Ca_pct_2
    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)

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

    Range of values
    Minimum:0.01
    Maximum:22.3
    Units:percent

    Cd_ppm_1
    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.
    NULLBlank (NULL) field values indicate that this chemical species was not requested or not analyzed.

    Range of values
    Minimum:0.5
    Maximum:21.1
    Units:parts per million

    Cd_ppm_2
    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
    NULLBlank (NULL) field values indicate that this chemical species was not requested or not analyzed.

    Range of values
    Minimum:0.02
    Maximum:20
    Units:parts per million

    Ce_ppm_1
    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)

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

    Range of values
    Minimum:0.77
    Maximum:490
    Units:parts per million

    Ce_ppm_2
    Cerium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Mass Spectroscopy (ICP-MS), Lithium Metaborate Fusion; 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:0.7
    Maximum:6120
    Units:parts per million

    Co_ppm_1
    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.
    NULLBlank (NULL) field values indicate that this chemical species was not requested or not analyzed.

    Range of values
    Minimum:1
    Maximum:540
    Units:parts per million

    Co_ppm_2
    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)

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

    Range of values
    Minimum:1.2
    Maximum:170
    Units:parts per million

    Cr_ppm_1
    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)

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

    Range of values
    Minimum:1
    Maximum:8070
    Units:parts per million

    Cr_ppm_2
    Chromium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy - Mass Spectrometry (ICP-AES-MS), HF-HNO3 -HClO4 Acid Digestion, HCl Leach; Lower detection limit = 1 ppm; Upper detection limit = 10000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Minerals)

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

    Range of values
    Minimum:6
    Maximum:2670
    Units:parts per million

    Cr_ppm_3
    Chromium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Mass Spectroscopy (ICP-MS), Lithium Metaborate Fusion; Lower detection limit = 10 ppm; Upper detection limit = 10000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Minerals)

    ValueDefinition
    -1Below detection limit.

    Range of values
    Minimum:10
    Maximum:7880
    Units:parts per million

    Cs_ppm_1
    Cesium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy - Mass Spectrometry (ICP-AES-MS), HF-HNO3 -HClO4 Acid Digestion, HCl Leach; Lower detection limit = 0.05 ppm; Upper detection limit = 500 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Minerals)

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

    Range of values
    Minimum:0.08
    Maximum:7.42
    Units:parts per million

    Cs_ppm_2
    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:0.08
    Maximum:61.9
    Units:parts per million

    Cu_ppm_1
    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
    NULLBlank (NULL) field values indicate that this chemical species was not requested or not analyzed.

    Range of values
    Minimum:1
    Maximum:5000
    Units:parts per million

    Cu_ppm_2
    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
    NULLBlank (NULL) field values indicate that this chemical species was not requested or not analyzed.

    Range of values
    Minimum:4
    Maximum:491
    Units:parts per million

    Dy_ppm
    Dysprosium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Mass Spectroscopy (ICP-MS), Lithium Metaborate Fusion; Lower detection limit = 0.05 ppm; Upper detection limit = 1000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Minerals)

    Range of values
    Minimum:0.22
    Maximum:72.8
    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:0.15
    Maximum:39.6
    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)

    ValueDefinition
    -1Below detection limit.

    Range of values
    Minimum:0.04
    Maximum:50.5
    Units:parts per million

    Fe_pct_1
    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)

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

    Range of values
    Minimum:0.61
    Maximum:46.2
    Units:percent

    Fe_pct_2
    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)

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

    Range of values
    Minimum:0.85
    Maximum:42.5
    Units:percent

    Ga_ppm_1
    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)

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

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

    Ga_ppm_2
    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)

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

    Range of values
    Minimum:0.52
    Maximum:24.6
    Units:parts per million

    Ga_ppm_3
    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:0.4
    Maximum:61.1
    Units:parts per million

    Gd_ppm
    Gadolinium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Mass Spectroscopy (ICP-MS), Lithium Metaborate Fusion; Lower detection limit = 0.05 ppm; Upper detection limit = 1000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Minerals)

    Range of values
    Minimum:0.21
    Maximum:110
    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
    NULLBlank (NULL) field values indicate that this chemical species was not requested or not analyzed.

    Range of values
    Minimum:0.07
    Maximum:2.46
    Units:parts per million

    Hf_ppm_1
    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.
    NULLBlank (NULL) field values indicate that this chemical species was not requested or not analyzed.

    Range of values
    Minimum:0.1
    Maximum:3.3
    Units:parts per million

    Hf_ppm_2
    Hafnium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Mass Spectroscopy (ICP-MS), Lithium Metaborate Fusion; Lower detection limit = 0.2 ppm; Upper detection limit = 10000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Minerals)

    Range of values
    Minimum:0.2
    Maximum:196.5
    Units:parts per million

    Ho_ppm
    Holmium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Mass Spectroscopy (ICP-MS), Lithium Metaborate Fusion; Lower detection limit = 0.01 ppm; Upper detection limit = 1000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Minerals)

    Range of values
    Minimum:0.05
    Maximum:14.05
    Units:parts per million

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

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

    Range of values
    Minimum:0.01
    Maximum:0.53
    Units:parts per million

    K_pct_1
    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)

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

    Range of values
    Minimum:0.04
    Maximum:4.52
    Units:percent

    K_pct_2
    Potassium values measured in percent (pct); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy - Mass Spectrometry (ICP-AES-MS), HF-HNO3 -HClO4 Acid Digestion, HCl Leach; Lower detection limit = 0.01 pct; Upper detection limit = 10 pct; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Minerals)

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

    Range of values
    Minimum:0.01
    Maximum:3.13
    Units:percent

    La_ppm_1
    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)

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

    Range of values
    Minimum:10
    Maximum:3050
    Units:parts per million

    La_ppm_2
    Lanthanum values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy - Mass Spectrometry (ICP-AES-MS), HF-HNO3 -HClO4 Acid Digestion, HCl Leach; Lower detection limit = 0.5 ppm; Upper detection limit = 10000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Minerals)

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

    Range of values
    Minimum:1.1
    Maximum:3490
    Units:parts per million

    La_ppm_3
    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)

    ValueDefinition
    -1Below detection limit.

    Range of values
    Minimum:1.2
    Maximum:4250
    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)

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

    Range of values
    Minimum:1
    Maximum:122
    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:0.03
    Maximum:4.57
    Units:parts per million

    Mg_pct_1
    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)

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

    Range of values
    Minimum:0.02
    Maximum:9.58
    Units:percent

    Mg_pct_2
    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
    NULLBlank (NULL) field values indicate that this chemical species was not requested or not analyzed.

    Range of values
    Minimum:0.04
    Maximum:6.53
    Units:percent

    Mn_ppm_1
    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)

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

    Range of values
    Minimum:42
    Maximum:57100
    Units:parts per million

    Mn_ppm_2
    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)

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

    Range of values
    Minimum:218
    Maximum:5830
    Units:parts per million

    Mo_ppm_1
    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.
    NULLBlank (NULL) field values indicate that this chemical species was not requested or not analyzed.

    Range of values
    Minimum:1
    Maximum:89
    Units:parts per million

    Mo_ppm_2
    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)

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

    Range of values
    Minimum:0.29
    Maximum:26.8
    Units:parts per million

    Na_pct_1
    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)

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

    Range of values
    Minimum:0.01
    Maximum:3.99
    Units:percent

    Na_pct_2
    Sodium values measured in percent (pct); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy - Mass Spectrometry (ICP-AES-MS), HF-HNO3 -HClO4 Acid Digestion, HCl Leach; Lower detection limit = 0.01 pct; Upper detection limit = 10 pct; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Minerals)

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

    Range of values
    Minimum:0.01
    Maximum:2.56
    Units:percent

    Nb_ppm_1
    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)

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

    Range of values
    Minimum:0.3
    Maximum:412
    Units:parts per million

    Nb_ppm_2
    Niobium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Mass Spectroscopy (ICP-MS), Lithium Metaborate Fusion; 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:0.2
    Maximum:2270
    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:0.5
    Maximum:1900
    Units:parts per million

    Ni_ppm_1
    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.
    NULLBlank (NULL) field values indicate that this chemical species was not requested or not analyzed.

    Range of values
    Minimum:1
    Maximum:2350
    Units:parts per million

    Ni_ppm_2
    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
    NULLBlank (NULL) field values indicate that this chemical species was not requested or not analyzed.

    Range of values
    Minimum:5.1
    Maximum:1570
    Units:parts per million

    P_ppm_1
    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)

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

    Range of values
    Minimum:10
    Maximum:8300
    Units:parts per million

    P_ppm_2
    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
    -2Above detection limit.
    NULLBlank (NULL) field values indicate that this chemical species was not requested or not analyzed.

    Range of values
    Minimum:50
    Maximum:9450
    Units:parts per million

    Pb_ppm_1
    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)

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

    Range of values
    Minimum:3
    Maximum:2970
    Units:parts per million

    Pb_ppm_2
    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
    NULLBlank (NULL) field values indicate that this chemical species was not requested or not analyzed.

    Range of values
    Minimum:0.9
    Maximum:132.5
    Units:parts per million

    Pd_ppm
    Palladium values measured in parts per million (ppm); Method: Fire Assay - Inductively Coupled Plasma - Atomic Emission Spectroscopy (FA-ICP-AES); Lower detection limit = 0.001 ppm; Upper detection limit = 10 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Minerals)

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

    Range of values
    Minimum:0.001
    Maximum:0.012
    Units:parts per million

    Pr_ppm
    Praseodymium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Mass Spectroscopy (ICP-MS), Lithium Metaborate Fusion; Lower detection limit = 0.03 ppm; Upper detection limit = 1000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Minerals)

    Range of values
    Minimum:0.12
    Maximum:587
    Units:parts per million

    Pt_ppm
    Platinum values measured in parts per million (ppm); Method: Fire Assay - Inductively Coupled Plasma - Atomic Emission Spectroscopy (FA-ICP-AES); Lower detection limit = 0.005 ppm; Upper detection limit = 10 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Minerals)

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

    Range of values
    Minimum:0.005
    Maximum:0.013
    Units:parts per million

    Rb_ppm_1
    Rubidium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy - Mass Spectrometry (ICP-AES-MS), HF-HNO3 -HClO4 Acid Digestion, HCl Leach; Lower detection limit = 0.1 ppm; Upper detection limit = 10000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Minerals)

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

    Range of values
    Minimum:0.6
    Maximum:120
    Units:parts per million

    Rb_ppm_2
    Rubidium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Mass Spectroscopy (ICP-MS), Lithium Metaborate Fusion; Lower detection limit = 0.2 ppm; Upper detection limit = 10000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Minerals)

    Range of values
    Minimum:0.6
    Maximum:1300
    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.
    NULLBlank (NULL) field values indicate that this chemical species was not requested or not analyzed.

    Range of values
    Minimum:0.002
    Maximum:0.018
    Units:parts per million

    S_pct_1
    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.
    NULLBlank (NULL) field values indicate that this chemical species was not requested or not analyzed.

    Range of values
    Minimum:0.01
    Maximum:2.01
    Units:percent

    S_pct_2
    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.
    NULLBlank (NULL) field values indicate that this chemical species was not requested or not analyzed.

    Range of values
    Minimum:0.01
    Maximum:0.76
    Units:percent

    Sb_ppm_1
    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.
    NULLBlank (NULL) field values indicate that this chemical species was not requested or not analyzed.

    Range of values
    Minimum:5
    Maximum:113
    Units:parts per million

    Sb_ppm_2
    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
    NULLBlank (NULL) field values indicate that this chemical species was not requested or not analyzed.

    Range of values
    Minimum:0.4
    Maximum:46.4
    Units:parts per million

    Sc_ppm_1
    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
    NULLBlank (NULL) field values indicate that this chemical species was not requested or not analyzed.

    Range of values
    Minimum:1
    Maximum:149
    Units:parts per million

    Sc_ppm_2
    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)

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

    Range of values
    Minimum:0.3
    Maximum:74.3
    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.
    NULLBlank (NULL) field values indicate that this chemical species was not requested or not analyzed.

    Range of values
    Minimum:1
    Maximum:6
    Units:parts per million

    Sm_ppm
    Samarium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Mass Spectroscopy (ICP-MS), Lithium Metaborate Fusion; Lower detection limit = 0.03 ppm; Upper detection limit = 1000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Minerals)

    Range of values
    Minimum:0.16
    Maximum:211
    Units:parts per million

    Sn_ppm_1
    Tin values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy - Mass Spectrometry (ICP-AES-MS), HF-HNO3 -HClO4 Acid Digestion, HCl Leach; Lower detection limit = 0.2 ppm; Upper detection limit = 500 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Minerals)

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

    Range of values
    Minimum:0.2
    Maximum:25.7
    Units:parts per million

    Sn_ppm_2
    Tin values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Mass Spectroscopy (ICP-MS), Lithium Metaborate Fusion; 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:1625
    Units:parts per million

    Sr_ppm_1
    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)

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

    Range of values
    Minimum:3
    Maximum:3480
    Units:parts per million

    Sr_ppm_2
    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)

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

    Range of values
    Minimum:6.9
    Maximum:6290
    Units:parts per million

    Sr_ppm_3
    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)

    ValueDefinition
    -2Above detection limit.

    Range of values
    Minimum:1.8
    Maximum:6890
    Units:parts per million

    Ta_ppm_1
    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.
    NULLBlank (NULL) field values indicate that this chemical species was not requested or not analyzed.

    Range of values
    Minimum:0.05
    Maximum:39.8
    Units:parts per million

    Ta_ppm_2
    Tantalum values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Mass Spectroscopy (ICP-MS), Lithium Metaborate Fusion; Lower detection limit = 0.1 ppm; Upper detection limit = 10000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Minerals)

    ValueDefinition
    -1Below detection limit.

    Range of values
    Minimum:0.1
    Maximum:163
    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:0.03
    Maximum:11.7
    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.
    NULLBlank (NULL) field values indicate that this chemical species was not requested or not analyzed.

    Range of values
    Minimum:0.05
    Maximum:0.67
    Units:parts per million

    Th_ppm_1
    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.
    NULLBlank (NULL) field values indicate that this chemical species was not requested or not analyzed.

    Range of values
    Minimum:20
    Maximum:290
    Units:parts per million

    Th_ppm_2
    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
    NULLBlank (NULL) field values indicate that this chemical species was not requested or not analyzed.

    Range of values
    Minimum:0.2
    Maximum:158
    Units:parts per million

    Th_ppm_3
    Thorium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Mass Spectroscopy (ICP-MS), Lithium Metaborate Fusion; Lower detection limit = 0.05 ppm; Upper detection limit = 1000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Minerals)

    Range of values
    Minimum:0.23
    Maximum:302
    Units:parts per million

    Ti_pct_1
    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)

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

    Range of values
    Minimum:0.01
    Maximum:3.18
    Units:percent

    Ti_pct_2
    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.
    NULLBlank (NULL) field values indicate that this chemical species was not requested or not analyzed.

    Range of values
    Minimum:0.007
    Maximum:1.38
    Units:percent

    Tl_ppm_1
    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.
    NULLBlank (NULL) field values indicate that this chemical species was not requested or not analyzed.

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

    Tl_ppm_2
    Thallium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy - Mass Spectrometry (ICP-AES-MS), HF-HNO3 -HClO4 Acid Digestion, HCl Leach; Lower detection limit = 0.02 ppm; Upper detection limit = 10000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Minerals)

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

    Range of values
    Minimum:0.05
    Maximum:2.14
    Units:parts per million

    Tl_ppm_3
    Thallium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Mass Spectroscopy (ICP-MS), Lithium Metaborate Fusion; Lower detection limit = 0.5 ppm; Upper detection limit = 1000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Minerals)

    ValueDefinition
    -1Below detection limit.

    Range of values
    Minimum:0.5
    Maximum:8.9
    Units:parts per million

    Tm_ppm
    Thulium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Mass Spectroscopy (ICP-MS), Lithium Metaborate Fusion; Lower detection limit = 0.01 ppm; Upper detection limit = 1000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Minerals)

    Range of values
    Minimum:0.03
    Maximum:5.15
    Units:parts per million

    U_ppm_1
    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.
    NULLBlank (NULL) field values indicate that this chemical species was not requested or not analyzed.

    Range of values
    Minimum:10
    Maximum:80
    Units:parts per million

    U_ppm_2
    Uranium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy - Mass Spectrometry (ICP-AES-MS), HF-HNO3 -HClO4 Acid Digestion, HCl Leach; Lower detection limit = 0.1 ppm; Upper detection limit = 10000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Minerals)

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

    Range of values
    Minimum:0.1
    Maximum:62.9
    Units:parts per million

    U_ppm_3
    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:0.16
    Maximum:118
    Units:parts per million

    V_ppm_1
    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
    NULLBlank (NULL) field values indicate that this chemical species was not requested or not analyzed.

    Range of values
    Minimum:1
    Maximum:788
    Units:parts per million

    V_ppm_2
    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
    NULLBlank (NULL) field values indicate that this chemical species was not requested or not analyzed.

    Range of values
    Minimum:6
    Maximum:1010
    Units:parts per million

    V_ppm_3
    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:1525
    Units:parts per million

    W_ppm_1
    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.
    NULLBlank (NULL) field values indicate that this chemical species was not requested or not analyzed.

    Range of values
    Minimum:10
    Maximum:960
    Units:parts per million

    W_ppm_2
    Tungsten values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy - Mass Spectrometry (ICP-AES-MS), HF-HNO3 -HClO4 Acid Digestion, HCl Leach; Lower detection limit = 0.1 ppm; Upper detection limit = 10000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Minerals)

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

    Range of values
    Minimum:0.1
    Maximum:35.5
    Units:parts per million

    W_ppm_3
    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:1785
    Units:parts per million

    Y_ppm_1
    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)

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

    Range of values
    Minimum:1.3
    Maximum:108.5
    Units:parts per million

    Y_ppm_2
    Yttrium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Mass Spectroscopy (ICP-MS), Lithium Metaborate Fusion; Lower detection limit = 0.5 ppm; Upper detection limit = 10000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Minerals)

    Range of values
    Minimum:1.4
    Maximum:385
    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:0.16
    Maximum:31.1
    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:1.345
    Maximum:1.615
    Units:percent

    Zn_ppm_1
    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)

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

    Range of values
    Minimum:7
    Maximum:2000
    Units:parts per million

    Zn_ppm_2
    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.
    NULLBlank (NULL) field values indicate that this chemical species was not requested or not analyzed.

    Range of values
    Minimum:4
    Maximum:9660
    Units:parts per million

    Zr_ppm_1
    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
    NULLBlank (NULL) field values indicate that this chemical species was not requested or not analyzed.

    Range of values
    Minimum:1.1
    Maximum:118.5
    Units:parts per million

    Zr_ppm_2
    Zirconium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Mass Spectroscopy (ICP-MS), Lithium Metaborate Fusion; 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.
    -2Above detection limit.

    Range of values
    Minimum:10
    Maximum:1640
    Units:parts per million


Who produced the data set?

  1. Who are the originators of the data set? (may include formal authors, digital compilers, and editors)

  2. Who also contributed to the data set?

    This work was a component of the State of Alaska's Strategic and Critical Minerals Assessment project, a state-funded Capital Improvement Project, is designed to evaluate Alaska's statewide potential for SCM resources. Historic USBM sample materials were retrieved by DGGS from the DGGS Geologic Materials Center, where the USBM samples were transferred as part of the federally funded Minerals Data and Information Rescue in Alaska (MDIRA) program in the late 1990s and early 2000s.

  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 State of Alaska's Strategic and Critical Minerals (SCM) Assessment project, a state-funded Capital Improvement Project (CIP), is designed to evaluate Alaska's statewide potential for SCM resources. The SCM Assessment project is being implemented by the Alaska Division of Geological & Geophysical Surveys (DGGS), and involves obtaining new airborne-geophysical, geological, and geochemical data. For the geochemical part of the SCM Assessment project, thousands of historic geochemical samples from the DGGS, U.S. Geological Survey, and U.S. Bureau of Mines (USBM) archives are being re-analyzed by DGGS using modern, quantitative, geochemical-analytical methods. The objective is to update the State of Alaska's statewide digital geochemical database in order to more clearly identify areas with SCM potential.


How was the data set created?

  1. From what previous works were the data drawn?

    Barker, J.C., 1979 (source 1 of 4)
    Barker, J.C., 1979, A trace element study of the Circle mining district, Alaska: Open-File Report OFR 57-79, U.S. Bureau of Mines, United States.

    Online Links:

    Other_Citation_Details: 74 p
    Type_of_Source_Media: paper
    Source_Contribution: sample selection and location coordinate identification

    Barker, J.C., 1984 (source 2 of 4)
    Barker, J.C., 1984, Concentrations of cobalt and other metals in the western Crazy Mountains, interior Alaska: Open-File Report OFR 213-84, U.S. Bureau of Mines, United States.

    Online Links:

    Other_Citation_Details: 44 p
    Type_of_Source_Media: paper
    Source_Contribution: sample selection and location coordinate identification

    Burton, P.J. and others, 1984 (source 3 of 4)
    Burton, P.J., Warner, J.D., and Barker, J.C., 1984, Reconnaissance investigation of tin occurrences at Rocky Mountain (Lime Peak), east-central Alaska: Open-File Report OFR 31-85, U.S. Bureau of Mines, United States.

    Online Links:

    Other_Citation_Details: 44 p
    Type_of_Source_Media: paper
    Source_Contribution: sample selection and location coordinate identification

    Smith, T.E. and others, 1987 (source 4 of 4)
    Smith, T.E., Pessel, G.H., and Wiltse, M.A., 1987, Mineral assessment of the Lime Peak-Mt. Prindle area, Alaska: Miscellaneous Publication MP 29, Alaska Division of Geological & Geophysical Surveys, Fairbanks, Alaska, United States.

    Online Links:

    Other_Citation_Details: 712 p., 13 sheets, scale 1:63,360
    Type_of_Source_Media: paper
    Source_Scale_Denominator: 63360
    Source_Contribution: sample selection and location coordinate identification

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

    Date: 2013 (process 1 of 7)
    Sample selection and location coordinate identification - We identified samples that were originally collected as part of studies by the USBM. These historic USBM sample materials were retrieved by DGGS from the DGGS Geologic Materials Center (GMC), where the USBM samples were transferred as part of the federally funded Minerals Data and Information Rescue in Alaska (MDIRA) program in the late 1990s and early 2000s. Location data for each sample were derived by DGGS staff by scanning station-location map figures from USBM reports, georegistering the map figures in ArcGIS v. 10.1, creating a point layer of station locations, and extracting latitude-longitude coordinates. Location data for each sample are presented in latitude and longitude coordinates in decimal degrees with NAD27 datum and Clarke 1866 spheroid.

    Data sources used in this process:

    • Barker, J.C., 1979
    • Barker, J.C., 1984
    • Burton, P.J. and others, 1984
    • Smith, T.E. and others, 1987

    Date: 2013 (process 2 of 7)
    Sample preparation - Sample pulps were retrieved from the GMC, examined, and split by DGGS staff into aliquots needed for the analyses, with leftover portions of the pulps saved and stored at the GMC. Splits of pulps were submitted to ALS Minerals Laboratories (ALS) for analysis. Where pulps were unavailable, coarse-reject material was prepped by ALS using method PUL-31: pulverize split to 85 percent less than 75 microns. Coarse-reject samples were pulverized at ALS using "flying disk" or "ring and puck" style, low chrome, steel grinding mills. A sample split or total sample up to 250 g is pulverized, with 85 percent of the resulting material passing through a screen of 75 microns.

    Date: 2013 (process 3 of 7)
    Method ME-MS81 38-element, fusion, ICP-MS - For all samples, trace elements, including rare-earth elements, were determined using lithium metaborate fusion digestion and ICP-MS (ALS Minerals method ME-MS81). A prepared sample (0.200 g) is added to lithium metaborate flux (0.90 g), mixed well and fused in a furnace at 1,000 degrees C. The resulting melt is then cooled and dissolved in 100 mL of 4% HNO3 / 2% HCl3 solution. This solution is then analyzed by inductively coupled plasma-mass spectrometry (ICP-MS). Note: Some base-metal oxides and sulfides may not be completely decomposed by the lithium borate fusion. Results for Ag, Co, Cu, Mo, Ni, Pb, and Zn will not likely be quantitative by this method.

    Date: 2013 (process 4 of 7)
    Method ME-ICP61 33-element, 4-acid, ICP-AES - A prepared sample (0.25 g) is digested with perchloric, nitric, hydrofluoric, and hydrochloric acids. The residue is topped up with dilute hydrochloric acid and the resulting solution is analyzed by inductively coupled plasma-atomic emission spectrometry (ICP-AES). Results are corrected for spectral inter-element interferences. Note: Four-acid digestions are able to dissolve most minerals, however, although the term "near total" is used, depending on the sample matrix, not all elements may be quantitatively extracted.

    Date: 2013 (process 5 of 7)
    Method ME-MS61 48-element, 4-acid, ICP-AES or ICP-MS - A prepared sample (0.25 g) is digested with perchloric, nitric, hydrofluoric, and hydrochloric acids. The residue is topped up with dilute hydrochloric acid and the resulting solution is analyzed by inductively coupled plasma-atomic emission spectrometry (ICP-AES). Results are corrected for spectral inter-element interferences. Note: Four-acid digestions are able to dissolve most minerals, however, although the term "near total" is used, depending on the sample matrix, not all elements may be quantitatively extracted.

    Date: 2013 (process 6 of 7)
    Method PGM-ICP23 Pt, Pd, Au, 30-gram, FA-ICP-AES - Gold (Au), platinum (Pt), and palladium (Pd) values were obtained from a prepared, 30 g sample, fused with a mixture of lead oxide, sodium carbonate, borax, and silica, inquarted with 6 mg of gold-free silver, and then cupelled to yield a precious-metal bead. The bead is digested for 2 minutes at high power by microwave in dilute nitric acid. The solution is cooled and hydrochloric acid is added. The solution is digested for an additional 2 minutes at half power by microwave. The digested solution is then cooled, diluted to 4 mL with 2% hydrochloric acid, homogenized, and then analyzed for gold, platinum, and palladium by inductively coupled plasma-atomic emission spectrometry (ICP-AES).

    Date: 2013 (process 7 of 7)
    Method ME-OG62 Ore-grade elements, 4-acid, ICP-AES - Samples with elements (where, ME=Ag, Au, Cu, Pb, or Zn) above the detection limits in the analytical methods described above were re-analyzed using method ME-OG62. Assays for the evaluation of ores and high-grade materials are optimized for accuracy and precision at high concentrations. Ultra-high-concentration samples (greater than 15-20%) may require the use of methods such as titrimetric and gravimetric analysis, in order to achieve maximum accuracy. A prepared sample is digested with nitric, perchloric, hydrofluoric, and hydrochloric acids, and then evaporated to incipient dryness. Hydrochloric acid and de-ionized water are added for further digestion, and the sample is heated for an additional allotted time. The sample is cooled to room temperature and transferred to a volumetric flask (100 mL). The resulting solution is diluted to volume with de-ionized water, homogenized and the solution is analyzed by inductively coupled plasma-atomic emission spectroscopy (ICP-AES) or by atomic absorption spectrometry (AAS). *Note: ICP-AES is the default finish technique for ME-OG62. However, under some conditions and at the discretion of the laboratory an AAS finish may be substituted. No analyses were determined by AAS for this report.

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

    Werdon, M.B., and Blessington, M.J., 2014, Analyses of historic U.S. Bureau of Mines samples for geochemical trace-element and rare-earth-element data from the Selawik Hills, northwestern Alaska: Raw Data File RDF 2014-10, Alaska Division of Geological & Geophysical Surveys, Fairbanks, Alaska, United States.

    Online Links:

    Other_Citation_Details: 4 p
    Werdon, M.B., and Blessington, M.J., 2014, Analyses of historic U.S. Bureau of Mines samples for geochemical trace-element and rare-earth-element data from the Zane Hills pluton, northwestern Alaska: Raw Data File RDF 2014-11, Alaska Division of Geological & Geophysical Surveys, Fairbanks, Alaska, United States.

    Online Links:

    Other_Citation_Details: 4 p
    Werdon, M.B., and Blessington, M.J., 2014, Analyses of historic U.S. Bureau of Mines samples for geochemical trace-element and rare-earth-element data from the Ray River watershed, and Kanuti and Hodzana rivers uplands, central Alaska: Raw Data File RDF 2014-12, Alaska Division of Geological & Geophysical Surveys, Fairbanks, Alaska, United States.

    Online Links:

    Other_Citation_Details: 4 p
    Werdon, M.B., and Blessington, M.J., 2014, Analyses of historic U.S. Bureau of Mines samples for geochemical trace-element and rare-earth-element data from the Porcupine River drainage, northeastern Alaska: Raw Data File RDF 2014-13, Alaska Division of Geological & Geophysical Surveys, Fairbanks, Alaska, United States.

    Online Links:

    Other_Citation_Details: 4 p
    Werdon, M.B., and Blessington, M.J., 2014, Analyses of historic U.S. Bureau of Mines samples for geochemical trace-element and rare-earth-element data from the VABM Bend area, Charley River and Eagle quadrangles, east-central Alaska: Raw Data File RDF 2014-14, Alaska Division of Geological & Geophysical Surveys, Fairbanks, Alaska, United States.

    Online Links:

    Other_Citation_Details: 4 p
    Werdon, M.B., and Blessington, M.J., 2014, Analyses of historic U.S. Bureau of Mines samples for geochemical trace-element and rare-earth-element data from Kook Lake, Sitka Quadrangle, Alaska: Raw Data File RDF 2014-15, Alaska Division of Geological & Geophysical Surveys, Fairbanks, Alaska, United States.

    Online Links:

    Other_Citation_Details: 4 p


How reliable are the data; what problems remain in the data set?

  1. How well have the observations been checked?

    Analytical results obtained from samples submitted to geochemical laboratories must pass through two levels of data validation. The first level of quality control checks occurs at ALS, which is accredited to ISO/IEC 17025-2005 standards. The laboratory's quality control protocol is to insert a reagent blank and a reference sample material with every batch of 20 samples to measure the analytical accuracy. Duplicate samples are analyzed at the end of the sample set to measure analytical variance as well as sample variance. Data passing the quality control criteria are sent to DGGS. The second level of data validation is performed by DGGS. All samples submitted to ALS are accompanied by a variety of DGGS in-house, ore-geochemical reference samples (blinds) submitted at the rate of 1, or occasionally more than 1, per sample batch. Upon receipt of analyses from the lab, reference standards are checked by DGGS against their accepted values. If present, any batches with reference standards with elemental values falling outside 2 standard deviations of their accepted values were submitted to the lab to be reanalyzed. For each sample, data tables either contain assay values, or they contain coded-value place holders (that is, null = not analyzed; -1 = the element's assay result is less than the lower detection limit for the method; -2 = the element's assay result is greater than the upper detection limit for the method). We provide detection limits and, when available, the method documentation provided to us by the lab. Users should contact the originating lab for additional information about detection limits and reporting procedures. We obtained geographic coordinates and the original sample material from the originating literature. We also note the type of sample material that was obtained from the archive and sent to the lab. The reported sample weights were measured by DGGS staff and are considered to be more accurate than the weight values listed on the ALS Certificate of Assay. Samples were sent to ALS in multiple batches and the method used varies varies between batches. In some cases, the method used may not provide quantitative results for all elements. The analyses presented in this publication were generated as a component of a broader project in which five batches of samples were sent to ALS. In a few cases samples were reanalyzed using several different methods, consequently, each analysis is uniquely identified by the combination of sample number + laboratory batch number.

  2. How accurate are the geographic locations?

    Location data for each sample were derived by DGGS staff by scanning station-location map figures from USBM reports, georegistering the map figures in ArcGIS v. 10.1, creating a point layer of station locations, and extracting latitude-longitude coordinates. Location data for each sample are presented in latitude and longitude coordinates in decimal degrees with NAD27 datum and Clarke 1866 spheroid.

  3. How accurate are the heights or depths?

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

    All of the analyses provided in this report were obtained from samples that were associated with Circle fieldwork according to the USBM/GMC inventory records. However, in a few cases, we were unable to find the applicable location coordinates. We are including these incomplete records in hope that the missing information may be found in the future.

  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 2014-7

  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: 22-Aug-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 Fri Aug 22 10:14:25 2014