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

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What does this data set describe?

1. How should this data set be cited?

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

   Online Links:

   • <http://dx.doi.org/10.14509/27289>

   Other_Citation_Details: 4 p.

2. What geographic area does the data set cover?

   West_Bounding_Coordinate: -153.709196

   East_Bounding_Coordinate: -152.733377

   North_Bounding_Coordinate: 62.285506

   South_Bounding_Coordinate: 61.513897

3. What does it look like?

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

   Beginning_Date: 2013

   Ending_Date: 2014

   Currentness_Reference: ground condition

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

   Geospatial_Data_Presentation_Form: digital-data, report

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

      This is a point data set.

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

      Horizontal positions are specified in geographic coordinates, that is, latitude and longitude. Latitudes are given to the nearest 0.000001. Longitudes are given to the nearest 0.000001. Latitude and longitude values are specified in decimal degrees.

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

7. How does the data set describe geographic features?

   rdf2014-6-border.shp

   A polygon that encompasses the maximum geographic extent of the data observations (Source: Alaska Division of Geological & Geophysical Surveys)

   rdf2014-6-rock-major-minor-oxide-trace-element-ree.csv, rdf2014-6-rock-major-minor-oxide-trace-element-ree-limits.csv

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

   SAMPLE

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

   Generic example of a sample identifier: YYAAA9999X: YY=last two digits of year, AAA=geologist's initials (one to three characters), 9999=unique station number, X= optional alpha character which indicates that multiple samples were collected at a given location or that multiple observations were recorded in the project database. The initials used by the geologists who collected samples for this project are: AT = Amy L. Tuzzolino, DR = David A. Reioux, EB = Erik N. Bachmann, ET = Evan Twelker, KS = Karri R. Sicard, LF = Larry K. Freeman, RN = Rainer J. Newberry, CW = Thomas C. Wright

   LATITUDE

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

   Range of values
   Minimum:	61.52103517
   Maximum:	62.28523421
   Units:	decimal degrees

   LONGITUDE

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

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

   LAB_SAMPLE_NUMBER

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

   Value	Definition
   NULL	The lab sample number is identical to the sample number.

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

   WEIGHT_KG

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

   Range of values
   Minimum:	0.57
   Maximum:	4.16
   Units:	kilograms

   BATCH_NUMBER

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

   FA14016194

   DESCRIPTION

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

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

   DESCRIP_2

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

   Value	Definition
   NULL	The descriptive text is shorter than 254 characters.

   Characters greater than 254 of the sample or station description.

   DESCRIP_3

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

   Value	Definition
   NULL	The descriptive text is shorter than 508 characters.

   Characters greater than 508 of the sample or station description.

   SiO2_pct

   Silicon dioxide values measured in percent (pct); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy (ICP-AES), Lithium Metaborate/Lithium Tetraborate Fusion; Lower detection limit = 0.01 pct; Upper detection limit = 100 pct; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Minerals)

   Range of values
   Minimum:	44.8
   Maximum:	78.5
   Units:	percent

   Al2O3_pct

   Aluminum oxide values measured in percent (pct); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy (ICP-AES), Lithium Metaborate/Lithium Tetraborate Fusion; Lower detection limit = 0.01 pct; Upper detection limit = 100 pct; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Minerals)

   Range of values
   Minimum:	5.15
   Maximum:	19.05
   Units:	percent

   Fe2O3_pct

   Iron oxide (+3) values measured in percent (pct); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy (ICP-AES), Lithium Metaborate/Lithium Tetraborate Fusion; Lower detection limit = 0.01 pct; Upper detection limit = 100 pct; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Minerals)

   Range of values
   Minimum:	0.58
   Maximum:	13.4
   Units:	percent

   CaO_pct

   Calcium oxide values measured in percent (pct); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy (ICP-AES), Lithium Metaborate/Lithium Tetraborate Fusion; Lower detection limit = 0.01 pct; Upper detection limit = 100 pct; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Minerals)

   Range of values
   Minimum:	0.31
   Maximum:	9.56
   Units:	percent

   MgO_pct

   Magnesium oxide values measured in percent (pct); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy (ICP-AES), Lithium Metaborate/Lithium Tetraborate Fusion; Lower detection limit = 0.01 pct; Upper detection limit = 100 pct; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Minerals)

   Range of values
   Minimum:	0.01
   Maximum:	19.75
   Units:	percent

   Na2O_pct

   Sodium oxide values measured in percent (pct); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy (ICP-AES), Lithium Metaborate/Lithium Tetraborate Fusion; Lower detection limit = 0.01 pct; Upper detection limit = 100 pct; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Minerals)

   Range of values
   Minimum:	0.53
   Maximum:	4.66
   Units:	percent

   K2O_pct

   Potassium oxide values measured in percent (pct); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy (ICP-AES), Lithium Metaborate/Lithium Tetraborate Fusion; Lower detection limit = 0.01 pct; Upper detection limit = 100 pct; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Minerals)

   Range of values
   Minimum:	1.11
   Maximum:	5.43
   Units:	percent

   Cr2O3_pct

   Chromium oxide values measured in percent (pct); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy (ICP-AES), Lithium Metaborate/Lithium Tetraborate Fusion; Lower detection limit = 0.01 pct; Upper detection limit = 100 pct; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Minerals)

   Value	Definition
   -1	Below detection limit.

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

   TiO2_pct

   Titanium dioxide values measured in percent (pct); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy (ICP-AES), Lithium Metaborate/Lithium Tetraborate Fusion; Lower detection limit = 0.01 pct; Upper detection limit = 100 pct; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Minerals)

   Range of values
   Minimum:	0.05
   Maximum:	2.7
   Units:	percent

   MnO_pct

   Manganese oxide values measured in percent (pct); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy (ICP-AES), Lithium Metaborate/Lithium Tetraborate Fusion; Lower detection limit = 0.01 pct; Upper detection limit = 100 pct; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Minerals)

   Range of values
   Minimum:	0.01
   Maximum:	0.42
   Units:	percent

   P2O5_pct

   Phosphorus oxide values measured in percent (pct); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy (ICP-AES), Lithium Metaborate/Lithium Tetraborate Fusion; Lower detection limit = 0.01 pct; Upper detection limit = 100 pct; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Minerals)

   Value	Definition
   -1	Below detection limit.

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

   SrO_pct

   Strontium oxide values measured in percent (pct); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy (ICP-AES), Lithium Metaborate/Lithium Tetraborate Fusion; Lower detection limit = 0.01 pct; Upper detection limit = 100 pct; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Minerals)

   Value	Definition
   -1	Below detection limit.

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

   BaO_pct

   Barium oxide values measured in percent (pct); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy (ICP-AES), Lithium Metaborate/Lithium Tetraborate Fusion; Lower detection limit = 0.01 pct; Upper detection limit = 100 pct; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Minerals)

   Value	Definition
   -1	Below detection limit.

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

   LOI_pct

   Loss on Ignition values measured in percent (pct); Method: Gravimetric (GRAV), Thermal decomposition furnace; Lower detection limit = 0.01 pct; Upper detection limit = 100 pct; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Minerals)

   Range of values
   Minimum:	0.2
   Maximum:	7.29
   Units:	percent

   Total_pct

   Total values measured in percent (pct); Method: Calculation (Calculation); Lower detection limit = 0.01 pct; Upper detection limit = 100 pct; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. Note: the reported values may be slightly above or below 100% due to uncertainties in the measurements or calculation assumptions. (Source: ALS Minerals)

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

   Ag_ppm

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

   Value	Definition
   -1	Below detection limit.

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

   Al_pct

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

   Range of values
   Minimum:	2.87
   Maximum:	8.24
   Units:	percent

   As_ppm

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

   Value	Definition
   -1	Below detection limit.

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

   Ba_ppm_1

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

   Range of values
   Minimum:	19.2
   Maximum:	1465
   Units:	parts per million

   Ba_ppm_2

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

   Range of values
   Minimum:	20
   Maximum:	1510
   Units:	parts per million

   Be_ppm

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

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

   Bi_ppm

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

   Value	Definition
   -1	Below detection limit.

   Range of values
   Minimum:	2
   Maximum:	30
   Units:	parts per million

   Ca_pct

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

   Range of values
   Minimum:	0.23
   Maximum:	6.69
   Units:	percent

   Cd_ppm

   Cadmium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy (ICP-AES), HNO3 -HClO4 -HF-HCl Digestion, HCl Leach; Lower detection limit = 0.5 ppm; Upper detection limit = 500 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Minerals)

   Value	Definition
   -1	Below detection limit.

   Range of values
   Minimum:	0.5
   Maximum:	1.2
   Units:	parts per million

   Ce_ppm

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

   Range of values
   Minimum:	21.1
   Maximum:	148
   Units:	parts per million

   Co_ppm

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

   Value	Definition
   -1	Below detection limit.

   Range of values
   Minimum:	1
   Maximum:	77
   Units:	parts per million

   Cr_ppm_1

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

   Range of values
   Minimum:	10
   Maximum:	1310
   Units:	parts per million

   Cr_ppm_2

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

   Range of values
   Minimum:	5
   Maximum:	809
   Units:	parts per million

   Cs_ppm

   Cesium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Mass Spectroscopy (ICP-MS), Lithium Metaborate Fusion; Lower detection limit = 0.01 ppm; Upper detection limit = 10000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Minerals)

   Range of values
   Minimum:	0.21
   Maximum:	18.25
   Units:	parts per million

   Cu_ppm

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

   Value	Definition
   -1	Below detection limit.

   Range of values
   Minimum:	1
   Maximum:	291
   Units:	parts per million

   Dy_ppm

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

   Range of values
   Minimum:	1.5
   Maximum:	16.2
   Units:	parts per million

   Er_ppm

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

   Range of values
   Minimum:	0.79
   Maximum:	8.31
   Units:	parts per million

   Eu_ppm

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

   Range of values
   Minimum:	0.05
   Maximum:	2.69
   Units:	parts per million

   Fe_pct

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

   Range of values
   Minimum:	0.4
   Maximum:	9.36
   Units:	percent

   Ga_ppm_1

   Gallium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Mass Spectroscopy (ICP-MS), Lithium Metaborate Fusion; Lower detection limit = 0.1 ppm; Upper detection limit = 1000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Minerals)

   Range of values
   Minimum:	8.2
   Maximum:	31.1
   Units:	parts per million

   Ga_ppm_2

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

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

   Gd_ppm

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

   Range of values
   Minimum:	2.41
   Maximum:	18.3
   Units:	parts per million

   Hf_ppm

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

   Range of values
   Minimum:	1.3
   Maximum:	10.4
   Units:	parts per million

   Ho_ppm

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

   Range of values
   Minimum:	0.29
   Maximum:	2.94
   Units:	parts per million

   K_pct

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

   Range of values
   Minimum:	0.88
   Maximum:	4.54
   Units:	percent

   La_ppm_1

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

   Range of values
   Minimum:	9
   Maximum:	77.9
   Units:	parts per million

   La_ppm_2

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

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

   Lu_ppm

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

   Range of values
   Minimum:	0.1
   Maximum:	1.14
   Units:	parts per million

   Mg_pct

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

   Range of values
   Minimum:	0.01
   Maximum:	12.55
   Units:	percent

   Mn_ppm

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

   Range of values
   Minimum:	41
   Maximum:	2990
   Units:	parts per million

   Mo_ppm

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

   Value	Definition
   -1	Below detection limit.

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

   Na_pct

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

   Range of values
   Minimum:	0.4
   Maximum:	3.39
   Units:	percent

   Nb_ppm

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

   Range of values
   Minimum:	3.3
   Maximum:	54.6
   Units:	parts per million

   Nd_ppm

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

   Range of values
   Minimum:	13.5
   Maximum:	63.6
   Units:	parts per million

   Ni_ppm

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

   Value	Definition
   -1	Below detection limit.

   Range of values
   Minimum:	1
   Maximum:	564
   Units:	parts per million

   P_ppm

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

   Range of values
   Minimum:	10
   Maximum:	4590
   Units:	parts per million

   Pb_ppm

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

   Range of values
   Minimum:	3
   Maximum:	112
   Units:	parts per million

   Pr_ppm

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

   Range of values
   Minimum:	3.04
   Maximum:	15.9
   Units:	parts per million

   Rb_ppm

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

   Range of values
   Minimum:	15.8
   Maximum:	313
   Units:	parts per million

   S_pct

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

   Value	Definition
   -1	Below detection limit.

   Range of values
   Minimum:	0.01
   Maximum:	0.15
   Units:	percent

   Sb_ppm

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

   Value	Definition
   -1	Below detection limit.

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

   Sc_ppm

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

   Value	Definition
   -1	Below detection limit.

   Range of values
   Minimum:	1
   Maximum:	36
   Units:	parts per million

   Sm_ppm

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

   Range of values
   Minimum:	3.22
   Maximum:	19.1
   Units:	parts per million

   Sn_ppm

   Tin values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Mass Spectroscopy (ICP-MS), Lithium Metaborate Fusion; Lower detection limit = 1 ppm; Upper detection limit = 10000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Minerals)

   Value	Definition
   -1	Below detection limit.

   Range of values
   Minimum:	1
   Maximum:	218
   Units:	parts per million

   Sr_ppm_1

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

   Range of values
   Minimum:	10.5
   Maximum:	1560
   Units:	parts per million

   Sr_ppm_2

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

   Range of values
   Minimum:	9
   Maximum:	1480
   Units:	parts per million

   Ta_ppm

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

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

   Tb_ppm

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

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

   Th_ppm_1

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

   Range of values
   Minimum:	1.26
   Maximum:	41.9
   Units:	parts per million

   Th_ppm_2

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

   Value	Definition
   -1	Below detection limit.

   Range of values
   Minimum:	20
   Maximum:	40
   Units:	parts per million

   Ti_pct

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

   Range of values
   Minimum:	0.03
   Maximum:	1.65
   Units:	percent

   Tl_ppm

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

   Value	Definition
   -1	Below detection limit.

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

   Tm_ppm

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

   Range of values
   Minimum:	0.1
   Maximum:	1.3
   Units:	parts per million

   U_ppm_1

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

   Range of values
   Minimum:	0.45
   Maximum:	13.7
   Units:	parts per million

   U_ppm_2

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

   Value	Definition
   -1	Below detection limit.

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

   V_ppm_1

   Vanadium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Mass Spectroscopy (ICP-MS), Lithium Metaborate Fusion; Lower detection limit = 5 ppm; Upper detection limit = 10000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Minerals)

   Value	Definition
   -1	Below detection limit.

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

   V_ppm_2

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

   Value	Definition
   -1	Below detection limit.

   Range of values
   Minimum:	1
   Maximum:	321
   Units:	parts per million

   W_ppm_1

   Tungsten values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Mass Spectroscopy (ICP-MS), Lithium Metaborate Fusion; Lower detection limit = 1 ppm; Upper detection limit = 10000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Minerals)

   Value	Definition
   -1	Below detection limit.

   Range of values
   Minimum:	1
   Maximum:	31
   Units:	parts per million

   W_ppm_2

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

   Value	Definition
   -1	Below detection limit.

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

   Y_ppm

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

   Range of values
   Minimum:	8
   Maximum:	84.6
   Units:	parts per million

   Yb_ppm

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

   Range of values
   Minimum:	0.73
   Maximum:	8.16
   Units:	parts per million

   Zn_ppm

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

   Range of values
   Minimum:	13
   Maximum:	253
   Units:	parts per million

   Zr_ppm

   Zirconium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Mass Spectroscopy (ICP-MS), Lithium Metaborate Fusion; Lower detection limit = 2 ppm; Upper detection limit = 10000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Minerals)

   Range of values
   Minimum:	46
   Maximum:	382
   Units:	parts per million

   rdf2014-6-rock-trace-element.csv, rdf2014-6-rock-trace-element-limits.csv

   Trace-element analysis of pulverized rock samples. (Source: Alaska Division of Geological & Geophysical Surveys)

   SAMPLE

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

   Generic example of a sample identifier: YYAAA9999X: YY=last two digits of year, AAA=geologist's initials (one to three characters), 9999=unique station number, X= optional alpha character which indicates that multiple samples were collected at a given location or that multiple observations were recorded in the project database. The initials used by the geologists who collected samples for this project are: AT = Amy L. Tuzzolino, DR = David A. Reioux, EB = Erik N. Bachmann, ET = Evan Twelker, KS = Karri R. Sicard, LF = Larry K. Freeman, RN = Rainer J. Newberry, CW = Thomas C. Wright

   LATITUDE

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

   Range of values
   Minimum:	61.51938567
   Maximum:	61.73790433
   Units:	decimal degrees

   LONGITUDE

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

   Range of values
   Minimum:	-153.382675
   Maximum:	-153.010123
   Units:	decimal degrees

   WEIGHT_KG

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

   Range of values
   Minimum:	0.18
   Maximum:	4.46
   Units:	kilograms

   DESCRIPTION

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

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

   DESCRIP_2

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

   Value	Definition
   NULL	The descriptive text is shorter than 254 characters.

   Characters greater than 254 of the sample or station description.

   Ag_ppm_1

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

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

   Range of values
   Minimum:	0.03
   Maximum:	97.3
   Units:	parts per million

   Ag_ppm_2

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

   Value	Definition
   NULL	Blank (NULL) field values indicate that this chemical species was not requested or not analyzed.

   Range of values
   Minimum:	178
   Maximum:	178
   Units:	parts per million

   Al_pct

   Aluminum values measured in percent (pct); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy - Mass Spectrometry (ICP-AES-MS), HF-HNO3 -HClO4 Acid Digestion, HCl Leach; Lower detection limit = 0.01 pct; Upper detection limit = 50 pct; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Minerals)

   Range of values
   Minimum:	0.03
   Maximum:	9.09
   Units:	percent

   As_ppm

   Arsenic values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy - Mass Spectrometry (ICP-AES-MS), HF-HNO3 -HClO4 Acid Digestion, HCl Leach; Lower detection limit = 0.2 ppm; Upper detection limit = 10000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Minerals)

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

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

   Au_ppm_1

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

   Value	Definition
   NULL	Blank (NULL) field values indicate that this chemical species was not requested or not analyzed.

   Range of values
   Minimum:	0.004
   Maximum:	1.01
   Units:	parts per million

   Au_ppm_2

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

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

   Range of values
   Minimum:	0.001
   Maximum:	0.925
   Units:	parts per million

   Au_ppm_3

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

   Value	Definition
   NULL	Blank (NULL) field values indicate that this chemical species was not requested or not analyzed.

   Range of values
   Minimum:	1.49
   Maximum:	3.45
   Units:	parts per million

   Ba_ppm

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

   Range of values
   Minimum:	10
   Maximum:	2420
   Units:	parts per million

   Be_ppm

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

   Range of values
   Minimum:	0.05
   Maximum:	40.4
   Units:	parts per million

   Bi_ppm

   Bismuth values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy - Mass Spectrometry (ICP-AES-MS), HF-HNO3 -HClO4 Acid Digestion, HCl Leach; Lower detection limit = 0.01 ppm; Upper detection limit = 10000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Minerals)

   Range of values
   Minimum:	0.04
   Maximum:	518
   Units:	parts per million

   Ca_pct

   Calcium values measured in percent (pct); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy - Mass Spectrometry (ICP-AES-MS), HF-HNO3 -HClO4 Acid Digestion, HCl Leach; Lower detection limit = 0.01 pct; Upper detection limit = 50 pct; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Minerals)

   Range of values
   Minimum:	0.01
   Maximum:	28.1
   Units:	percent

   Cd_ppm

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

   Value	Definition
   -1	Below detection limit.

   Range of values
   Minimum:	0.02
   Maximum:	670
   Units:	parts per million

   Ce_ppm

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

   Range of values
   Minimum:	1.35
   Maximum:	104.5
   Units:	parts per million

   Co_ppm

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

   Range of values
   Minimum:	0.1
   Maximum:	43.1
   Units:	parts per million

   Cr_ppm

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

   Range of values
   Minimum:	2
   Maximum:	300
   Units:	parts per million

   Cs_ppm

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

   Range of values
   Minimum:	0.21
   Maximum:	31.4
   Units:	parts per million

   Cu_pct

   Copper values measured in percent (pct); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy (ICP-AES), HNO3 -HClO4 -HF-HCl; Lower detection limit = 0.001 pct; Upper detection limit = 40 pct; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Minerals)

   Value	Definition
   NULL	Blank (NULL) field values indicate that this chemical species was not requested or not analyzed.

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

   Cu_ppm

   Copper values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy - Mass Spectrometry (ICP-AES-MS), HF-HNO3 -HClO4 Acid Digestion, HCl Leach; Lower detection limit = 0.2 ppm; Upper detection limit = 10000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Minerals)

   Value	Definition
   -2	Above detection limit.

   Range of values
   Minimum:	1.1
   Maximum:	9030
   Units:	parts per million

   Fe_pct

   Iron values measured in percent (pct); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy - Mass Spectrometry (ICP-AES-MS), HF-HNO3 -HClO4 Acid Digestion, HCl Leach; Lower detection limit = 0.01 pct; Upper detection limit = 50 pct; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Minerals)

   Range of values
   Minimum:	0.31
   Maximum:	12.2
   Units:	percent

   Ga_ppm

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

   Range of values
   Minimum:	0.38
   Maximum:	47.9
   Units:	parts per million

   Ge_ppm

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

   Value	Definition
   -1	Below detection limit.

   Range of values
   Minimum:	0.05
   Maximum:	0.36
   Units:	parts per million

   Hf_ppm

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

   Value	Definition
   -1	Below detection limit.

   Range of values
   Minimum:	0.1
   Maximum:	11.8
   Units:	parts per million

   In_ppm

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

   Range of values
   Minimum:	0.007
   Maximum:	24.4
   Units:	parts per million

   K_pct

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

   Range of values
   Minimum:	0.01
   Maximum:	5.83
   Units:	percent

   La_ppm

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

   Range of values
   Minimum:	0.6
   Maximum:	74.6
   Units:	parts per million

   Li_ppm

   Lithium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy - Mass Spectrometry (ICP-AES-MS), HF-HNO3 -HClO4 Acid Digestion, HCl Leach; Lower detection limit = 0.2 ppm; Upper detection limit = 10000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Minerals)

   Range of values
   Minimum:	1.4
   Maximum:	178
   Units:	parts per million

   Mg_pct

   Magnesium values measured in percent (pct); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy - Mass Spectrometry (ICP-AES-MS), HF-HNO3 -HClO4 Acid Digestion, HCl Leach; Lower detection limit = 0.01 pct; Upper detection limit = 50 pct; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Minerals)

   Value	Definition
   -1	Below detection limit.

   Range of values
   Minimum:	0.01
   Maximum:	6.52
   Units:	percent

   Mn_ppm

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

   Range of values
   Minimum:	31
   Maximum:	13750
   Units:	parts per million

   Mo_ppm

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

   Range of values
   Minimum:	0.18
   Maximum:	657
   Units:	parts per million

   Na_pct

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

   Range of values
   Minimum:	0.01
   Maximum:	5.71
   Units:	percent

   Nb_ppm

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

   Range of values
   Minimum:	0.1
   Maximum:	72.7
   Units:	parts per million

   Ni_ppm

   Nickel values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy - Mass Spectrometry (ICP-AES-MS), HF-HNO3 -HClO4 Acid Digestion, HCl Leach; Lower detection limit = 0.2 ppm; Upper detection limit = 10000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Minerals)

   Value	Definition
   -1	Below detection limit.

   Range of values
   Minimum:	0.3
   Maximum:	186
   Units:	parts per million

   P_ppm

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

   Value	Definition
   -1	Below detection limit.

   Range of values
   Minimum:	10
   Maximum:	3070
   Units:	parts per million

   Pb_pct

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

   Value	Definition
   NULL	Blank (NULL) field values indicate that this chemical species was not requested or not analyzed.

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

   Pb_ppm

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

   Value	Definition
   -2	Above detection limit.

   Range of values
   Minimum:	1.1
   Maximum:	5880
   Units:	parts per million

   Pd_ppm

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

   Value	Definition
   -1	Below detection limit.

   Range of values
   Minimum:	0.001
   Maximum:	0.017
   Units:	parts per million

   Pt_ppm

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

   Value	Definition
   -1	Below detection limit.

   Range of values
   Minimum:	0.0005
   Maximum:	0.0144
   Units:	parts per million

   Rb_ppm

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

   Range of values
   Minimum:	0.6
   Maximum:	470
   Units:	parts per million

   Re_ppm

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

   Value	Definition
   -1	Below detection limit.

   Range of values
   Minimum:	0.002
   Maximum:	0.145
   Units:	parts per million

   S_pct

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

   Value	Definition
   -1	Below detection limit.

   Range of values
   Minimum:	0.01
   Maximum:	5.39
   Units:	percent

   Sb_ppm

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

   Value	Definition
   -1	Below detection limit.

   Range of values
   Minimum:	0.06
   Maximum:	686
   Units:	parts per million

   Sc_ppm

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

   Range of values
   Minimum:	0.2
   Maximum:	39.2
   Units:	parts per million

   Se_ppm

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

   Value	Definition
   -1	Below detection limit.

   Range of values
   Minimum:	1
   Maximum:	57
   Units:	parts per million

   Sn_ppm

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

   Range of values
   Minimum:	0.4
   Maximum:	349
   Units:	parts per million

   Sr_ppm

   Strontium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy - Mass Spectrometry (ICP-AES-MS), HF-HNO3 -HClO4 Acid Digestion, HCl Leach; Lower detection limit = 0.2 ppm; Upper detection limit = 10000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Minerals)

   Range of values
   Minimum:	1.9
   Maximum:	2470
   Units:	parts per million

   Ta_ppm

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

   Value	Definition
   -1	Below detection limit.

   Range of values
   Minimum:	0.05
   Maximum:	5.53
   Units:	parts per million

   Te_ppm

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

   Value	Definition
   -1	Below detection limit.

   Range of values
   Minimum:	0.05
   Maximum:	31.7
   Units:	parts per million

   Th_ppm

   Thorium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy - Mass Spectrometry (ICP-AES-MS), HF-HNO3 -HClO4 Acid Digestion, HCl Leach; Lower detection limit = 0.2 ppm; Upper detection limit = 10000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Minerals)

   Value	Definition
   -1	Below detection limit.

   Range of values
   Minimum:	0.2
   Maximum:	47.4
   Units:	parts per million

   Ti_pct

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

   Value	Definition
   -1	Below detection limit.

   Range of values
   Minimum:	0.006
   Maximum:	0.867
   Units:	percent

   Tl_ppm

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

   Range of values
   Minimum:	0.04
   Maximum:	9.75
   Units:	parts per million

   U_ppm

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

   Range of values
   Minimum:	0.2
   Maximum:	25.9
   Units:	parts per million

   V_ppm

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

   Value	Definition
   -1	Below detection limit.

   Range of values
   Minimum:	1
   Maximum:	407
   Units:	parts per million

   W_ppm

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

   Range of values
   Minimum:	0.2
   Maximum:	660
   Units:	parts per million

   Y_ppm

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

   Range of values
   Minimum:	0.5
   Maximum:	124.5
   Units:	parts per million

   Zn_pct

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

   Value	Definition
   NULL	Blank (NULL) field values indicate that this chemical species was not requested or not analyzed.

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

   Zn_ppm

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

   Value	Definition
   -2	Above detection limit.

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

   Zr_ppm

   Zirconium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy - Mass Spectrometry (ICP-AES-MS), HF-HNO3 -HClO4 Acid Digestion, HCl Leach; Lower detection limit = 0.5 ppm; Upper detection limit = 500 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Minerals)

   Value	Definition
   -1	Below detection limit.

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

   rdf2014-6-slab-xrf-major-minor-oxide-trace-element.csv, rdf2014-6-slab-xrf-major-minor-oxide-trace-element-limits.csv

   Major- and minor-oxide and trace-element analysis of rock-slab samples. (Source: Alaska Division of Geological & Geophysical Surveys)

   SAMPLE

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

   Generic example of a sample identifier: YYAAA9999X: YY=last two digits of year, AAA=geologist's initials (one to three characters), 9999=unique station number, X= optional alpha character which indicates that multiple samples were collected at a given location or that multiple observations were recorded in the project database. The initials used by the geologists who collected samples for this project are: AT = Amy L. Tuzzolino, DR = David A. Reioux, EB = Erik N. Bachmann, ET = Evan Twelker, KS = Karri R. Sicard, LF = Larry K. Freeman, RN = Rainer J. Newberry, CW = Thomas C. Wright

   LATITUDE

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

   Range of values
   Minimum:	61.5138965
   Maximum:	62.28550617
   Units:	decimal degrees

   LONGITUDE

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

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

   LAB_SAMPLE_NUMBER

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

   Value	Definition
   NULL	The lab sample number is identical to the sample number.

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

   DESCRIPTION

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

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

   DESCRIP_2

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

   Value	Definition
   NULL	The descriptive text is shorter than 254 characters.

   Characters greater than 254 of the sample or station description.

   SiO2_pct

   Silicon dioxide values measured in percent (pct); Method: X-Ray Fluorescence (SLAB-XRF); Lower detection limit = 0.1 pct; Upper detection limit = 100 pct; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Advanced Instrumentation Laboratory at the University of Alaska Fairbanks)

   Range of values
   Minimum:	45.7
   Maximum:	93.1
   Units:	percent

   Al2O3_pct

   Aluminum oxide values measured in percent (pct); Method: X-Ray Fluorescence (SLAB-XRF); Lower detection limit = 0.05 pct; Upper detection limit = 75 pct; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Advanced Instrumentation Laboratory at the University of Alaska Fairbanks)

   Range of values
   Minimum:	3.6
   Maximum:	24.6
   Units:	percent

   BaO_pct

   Barium oxide values measured in percent (pct); Method: X-Ray Fluorescence (SLAB-XRF); Lower detection limit = 0.03 pct; Upper detection limit = 75 pct; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Advanced Instrumentation Laboratory at the University of Alaska Fairbanks)

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

   Range of values
   Minimum:	0.00264
   Maximum:	0.789
   Units:	percent

   CaO_pct

   Calcium oxide values measured in percent (pct); Method: X-Ray Fluorescence (SLAB-XRF); Lower detection limit = 0.02 pct; Upper detection limit = 75 pct; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Advanced Instrumentation Laboratory at the University of Alaska Fairbanks)

   Range of values
   Minimum:	0.1
   Maximum:	14.3
   Units:	percent

   Cl_pct

   Chlorine values measured in percent (pct); Method: X-Ray Fluorescence (SLAB-XRF); Lower detection limit = 0.01 pct; Upper detection limit = 10 pct; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Advanced Instrumentation Laboratory at the University of Alaska Fairbanks)

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

   Range of values
   Minimum:	0.00258
   Maximum:	5.14
   Units:	percent

   F_pct

   Fluorine values measured in percent (pct); Method: X-Ray Fluorescence (SLAB-XRF); Lower detection limit = 0.01 pct; Upper detection limit = 10 pct; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Advanced Instrumentation Laboratory at the University of Alaska Fairbanks)

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

   Range of values
   Minimum:	0.0435
   Maximum:	1.35
   Units:	percent

   FeO_pct

   Iron oxide (+2) values measured in percent (pct); Method: X-Ray Fluorescence (SLAB-XRF); Lower detection limit = 0.03 pct; Upper detection limit = 75 pct; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Advanced Instrumentation Laboratory at the University of Alaska Fairbanks)

   Range of values
   Minimum:	0.2
   Maximum:	14.2
   Units:	percent

   K2O_pct

   Potassium oxide values measured in percent (pct); Method: X-Ray Fluorescence (SLAB-XRF); Lower detection limit = 0.02 pct; Upper detection limit = 75 pct; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Advanced Instrumentation Laboratory at the University of Alaska Fairbanks)

   Range of values
   Minimum:	0.2
   Maximum:	7.3
   Units:	percent

   MgO_pct

   Magnesium oxide values measured in percent (pct); Method: X-Ray Fluorescence (SLAB-XRF); Lower detection limit = 0.05 pct; Upper detection limit = 75 pct; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Advanced Instrumentation Laboratory at the University of Alaska Fairbanks)

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

   Range of values
   Minimum:	0.1
   Maximum:	15.5
   Units:	percent

   MnO_pct

   Manganese oxide values measured in percent (pct); Method: X-Ray Fluorescence (SLAB-XRF); Lower detection limit = 0.03 pct; Upper detection limit = 75 pct; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Advanced Instrumentation Laboratory at the University of Alaska Fairbanks)

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

   Range of values
   Minimum:	0.0045
   Maximum:	0.634
   Units:	percent

   Na2O_pct

   Sodium oxide values measured in percent (pct); Method: X-Ray Fluorescence (SLAB-XRF); Lower detection limit = 0.02 pct; Upper detection limit = 75 pct; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Advanced Instrumentation Laboratory at the University of Alaska Fairbanks)

   Range of values
   Minimum:	0.01
   Maximum:	7.3
   Units:	percent

   P2O5_pct

   Phosphorus oxide values measured in percent (pct); Method: X-Ray Fluorescence (SLAB-XRF); Lower detection limit = 0.03 pct; Upper detection limit = 75 pct; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Advanced Instrumentation Laboratory at the University of Alaska Fairbanks)

   Range of values
   Minimum:	0.003352
   Maximum:	1.224
   Units:	percent

   S_pct

   Sulfur values measured in percent (pct); Method: X-Ray Fluorescence (SLAB-XRF); Lower detection limit = 0.007 pct; Upper detection limit = 50 pct; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Advanced Instrumentation Laboratory at the University of Alaska Fairbanks)

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

   Range of values
   Minimum:	0.01
   Maximum:	1.66
   Units:	percent

   TiO2_pct

   Titanium dioxide values measured in percent (pct); Method: X-Ray Fluorescence (SLAB-XRF); Lower detection limit = 0.02 pct; Upper detection limit = 75 pct; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Advanced Instrumentation Laboratory at the University of Alaska Fairbanks)

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

   Range of values
   Minimum:	0.02
   Maximum:	2.7
   Units:	percent

   As_ppm

   Arsenic values measured in parts per million (ppm); Method: X-Ray Fluorescence (SLAB-XRF); Lower detection limit = 4 ppm; Upper detection limit = 750000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Advanced Instrumentation Laboratory at the University of Alaska Fairbanks)

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

   Range of values
   Minimum:	1
   Maximum:	1810
   Units:	parts per million

   Bi_ppm

   Bismuth values measured in parts per million (ppm); Method: X-Ray Fluorescence (SLAB-XRF); Lower detection limit = 2 ppm; Upper detection limit = 750000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Advanced Instrumentation Laboratory at the University of Alaska Fairbanks)

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

   Range of values
   Minimum:	152
   Maximum:	152
   Units:	parts per million

   Ce_ppm

   Cerium values measured in parts per million (ppm); Method: X-Ray Fluorescence (SLAB-XRF); Lower detection limit = 20 ppm; Upper detection limit = 500000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Advanced Instrumentation Laboratory at the University of Alaska Fairbanks)

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

   Cr_ppm

   Chromium values measured in parts per million (ppm); Method: X-Ray Fluorescence (SLAB-XRF); Lower detection limit = 30 ppm; Upper detection limit = 750000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Advanced Instrumentation Laboratory at the University of Alaska Fairbanks)

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

   Range of values
   Minimum:	5
   Maximum:	1550
   Units:	parts per million

   Cu_ppm

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

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

   Range of values
   Minimum:	1
   Maximum:	372
   Units:	parts per million

   Ga_ppm

   Gallium values measured in parts per million (ppm); Method: X-Ray Fluorescence (SLAB-XRF); Lower detection limit = 10 ppm; Upper detection limit = 100000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Advanced Instrumentation Laboratory at the University of Alaska Fairbanks)

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

   Range of values
   Minimum:	10
   Maximum:	42
   Units:	parts per million

   La_ppm

   Lanthanum values measured in parts per million (ppm); Method: X-Ray Fluorescence (SLAB-XRF); Lower detection limit = 50 ppm; Upper detection limit = 750000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Advanced Instrumentation Laboratory at the University of Alaska Fairbanks)

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

   Range of values
   Minimum:	108
   Maximum:	263
   Units:	parts per million

   Mo_ppm

   Molybdenum values measured in parts per million (ppm); Method: X-Ray Fluorescence (SLAB-XRF); Lower detection limit = 1 ppm; Upper detection limit = 750000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Advanced Instrumentation Laboratory at the University of Alaska Fairbanks)

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

   Range of values
   Minimum:	11
   Maximum:	38
   Units:	parts per million

   Nb_ppm

   Niobium values measured in parts per million (ppm); Method: X-Ray Fluorescence (SLAB-XRF); Lower detection limit = 1 ppm; Upper detection limit = 750000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Advanced Instrumentation Laboratory at the University of Alaska Fairbanks)

   Range of values
   Minimum:	3
   Maximum:	65
   Units:	parts per million

   Nd_ppm

   Neodymium values measured in parts per million (ppm); Method: X-Ray Fluorescence (SLAB-XRF); Lower detection limit = 20 ppm; Upper detection limit = 500000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Advanced Instrumentation Laboratory at the University of Alaska Fairbanks)

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

   Range of values
   Minimum:	162
   Maximum:	380
   Units:	parts per million

   Ni_ppm

   Nickel values measured in parts per million (ppm); Method: X-Ray Fluorescence (SLAB-XRF); Lower detection limit = 7 ppm; Upper detection limit = 750000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Advanced Instrumentation Laboratory at the University of Alaska Fairbanks)

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

   Range of values
   Minimum:	1
   Maximum:	343
   Units:	parts per million

   Pb_ppm

   Lead values measured in parts per million (ppm); Method: X-Ray Fluorescence (SLAB-XRF); Lower detection limit = 4 ppm; Upper detection limit = 750000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Advanced Instrumentation Laboratory at the University of Alaska Fairbanks)

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

   Range of values
   Minimum:	14
   Maximum:	409
   Units:	parts per million

   Rb_ppm

   Rubidium values measured in parts per million (ppm); Method: X-Ray Fluorescence (SLAB-XRF); Lower detection limit = 1 ppm; Upper detection limit = 750000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Advanced Instrumentation Laboratory at the University of Alaska Fairbanks)

   Range of values
   Minimum:	1
   Maximum:	981
   Units:	parts per million

   Sn_ppm

   Tin values measured in parts per million (ppm); Method: X-Ray Fluorescence (SLAB-XRF); Lower detection limit = 4 ppm; Upper detection limit = 750000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Advanced Instrumentation Laboratory at the University of Alaska Fairbanks)

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

   Range of values
   Minimum:	26
   Maximum:	604
   Units:	parts per million

   Sr_ppm

   Strontium values measured in parts per million (ppm); Method: X-Ray Fluorescence (SLAB-XRF); Lower detection limit = 1 ppm; Upper detection limit = 750000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Advanced Instrumentation Laboratory at the University of Alaska Fairbanks)

   Range of values
   Minimum:	14
   Maximum:	1803
   Units:	parts per million

   Th_ppm

   Thorium values measured in parts per million (ppm); Method: X-Ray Fluorescence (SLAB-XRF); Lower detection limit = 2 ppm; Upper detection limit = 750000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Advanced Instrumentation Laboratory at the University of Alaska Fairbanks)

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

   Range of values
   Minimum:	11
   Maximum:	99
   Units:	parts per million

   U_ppm

   Uranium values measured in parts per million (ppm); Method: X-Ray Fluorescence (SLAB-XRF); Lower detection limit = 1 ppm; Upper detection limit = 750000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Advanced Instrumentation Laboratory at the University of Alaska Fairbanks)

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

   Range of values
   Minimum:	11
   Maximum:	34
   Units:	parts per million

   V_ppm

   Vanadium values measured in parts per million (ppm); Method: X-Ray Fluorescence (SLAB-XRF); Lower detection limit = 25 ppm; Upper detection limit = 750000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Advanced Instrumentation Laboratory at the University of Alaska Fairbanks)

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

   Range of values
   Minimum:	2
   Maximum:	533
   Units:	parts per million

   W_ppm

   Tungsten values measured in parts per million (ppm); Method: X-Ray Fluorescence (SLAB-XRF); Lower detection limit = 8 ppm; Upper detection limit = 750000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Advanced Instrumentation Laboratory at the University of Alaska Fairbanks)

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

   Range of values
   Minimum:	48
   Maximum:	123
   Units:	parts per million

   Y_ppm

   Yttrium values measured in parts per million (ppm); Method: X-Ray Fluorescence (SLAB-XRF); Lower detection limit = 1 ppm; Upper detection limit = 750000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Advanced Instrumentation Laboratory at the University of Alaska Fairbanks)

   Range of values
   Minimum:	6
   Maximum:	110
   Units:	parts per million

   Zn_ppm

   Zinc values measured in parts per million (ppm); Method: X-Ray Fluorescence (SLAB-XRF); Lower detection limit = 8 ppm; Upper detection limit = 750000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Advanced Instrumentation Laboratory at the University of Alaska Fairbanks)

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

   Range of values
   Minimum:	11
   Maximum:	1520
   Units:	parts per million

   Zr_ppm

   Zirconium values measured in parts per million (ppm); Method: X-Ray Fluorescence (SLAB-XRF); Lower detection limit = 9 ppm; Upper detection limit = 750000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Advanced Instrumentation Laboratory at the University of Alaska Fairbanks)

   Range of values
   Minimum:	3
   Maximum:	540
   Units:	parts per million

Who produced the data set?

1. Who are the originators of the data set? (may include formal authors, digital compilers, and editors)
   • Sicard, K.R.
   • Wypych, Alicja
   • Twelker, Evan
   • Bachmann, E.N.
   • Freeman, L.K.
   • Newberry, R.J.
   • Reioux, D.A.
   • Tuzzolino, A.L.
   • Wright, T.C.

2. Who also contributed to the data set?

   The Styx River project in the Lime Hills C-1 Quadrangle was part of the State-funded Airborne Geophysical/Geological Mineral Inventory (AGGMI) program as part of the State's Strategic Minerals Assessment Project, an initiative designed to evaluate Alaska's potential for rare-earth elements, PGEs, and other similarly supply-challenged resources. This project is funded by the Alaska State Legislature and managed by State of Alaska, Department of Natural Resources, Division of Geological & Geophysical Surveys.

3. To whom should users address questions about the data?
   Alaska Division of Geological & Geophysical Surveys
   GIS Manager
   3354 College Road
   Fairbanks, AK 99709-3707
   USA
   

   (907)451-5020 (voice)
   dggsgis@alaska.gov
   

   Hours_of_Service: 8 am to 4:30 pm, Monday through Friday, except State holidays

Why was the data set created?

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

How was the data set created?

1. From what previous works were the data drawn?

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

   Date: 2013 (process 1 of 9)

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

   Date: 2013 (process 2 of 9)

   Sample preparation - Rock samples were processed by ALS Minerals using their PREP-31 package. The samples were crushed to better than 70 percent passing 2 mm, and a 250 g split was pulverized to better than 85 percent passing 75 microns. Prior to crushing, samples for whole-rock analysis were trimmed by DGGS staff to remove weathering, and cut surfaces were sanded to remove any saw metal. Slab XRF samples were cut into rough discs 4 cm in diameter and polished on a lapidary wheel.

   Date: 2013 (process 3 of 9)

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

   Date: 2013 (process 4 of 9)

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

   Date: 2013 (process 5 of 9)

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

   Date: 2013 (process 6 of 9)

   Reanalysis of samples that exceeded detection limits for elements of interest - Samples that exceeded detection limits for elements of interest were reanalyzed using specific elemental tests. Over-limit values for Ag, Cu, Zn and Pb were reanalyzed using four-acid digestion and ICP-AES (ALS Minerals procedure ME-OG62). Over-limit values for Au were reanalyzed by 30 g fire assay with atomic absorption (AA) finish (ALS Minerals procedure Au-AA25).

   Date: 2013 (process 7 of 9)

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

   Date: 2013 (process 8 of 9)

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

   Date: 2014 (process 9 of 9)

   We corrected minor typological errors in the rock descriptions.

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

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

1. How well have the observations been checked?

   In addition to ALS Minerals' internal quality-control program accredited to ISO/IEC 17025-2005 standards, DGGS monitored analysis quality by inserting igneous-rock and ore-geochemical-pulp standards with known compositions into the sample roster for every sample batch. In the case of slab XRF analysis, we report measured values which are above or below instrument detection limits when they are provided to us by the originating lab. NULL values in the slab XRF tables indicate that the chemical species was below detection limits. NULL values in the tables from ALS minerals tables indicate that the analysis was not ordered for the sample. Users should contact the originating labs for additional information about detection limits and reporting procedures. Brief sample descriptions are based principally on field observations with some thin-section details added.

2. How accurate are the geographic locations?

   Location data were collected using Trimble Juno T41/5 WAAS-enabled GPS devices running ArcGIS for Windows Mobile. Data were merged into an ArcGIS geodatabase. WAAS-enabled GPS devices have a reported error of about 1 m. Latitude and longitude are reported in the WGS84 datum.

3. How accurate are the heights or depths?

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

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

5. How consistent are the relationships among the observations, including topology?

   not applicable

How can someone get a copy of the data set?

Are there legal restrictions on access or use of the data?

Access_Constraints:

This report, map, and/or dataset is available directly from the State of Alaska, Department of Natural Resources, Division of Geological & Geophysical Surveys (see contact information below).

Use_Constraints:

Any hard copies or published datasets utilizing these datasets shall clearly indicate their source. If the user has modified the data in any way, the user is obligated to describe the types of modifications the user has made. The user specifically agrees not to misrepresent these datasets, nor to imply that changes made by the user were approved by the State of Alaska, Department of Natural Resources, Division of Geological &amp; Geophysical Surveys. The State of Alaska makes no express or implied warranties (including warranties for merchantability and fitness) with respect to the character, functions, or capabilities of the electronic data or products or their appropriateness for any user's purposes. In no event will the State of Alaska be liable for any incidental, indirect, special, consequential, or other damages suffered by the user or any other person or entity whether from the use of the electronic services or products or any failure thereof or otherwise. In no event will the State of Alaska's liability to the Requestor or anyone else exceed the fee paid for the electronic service or product.

1. Who distributes the data set? (Distributor 1 of 1)
   Alaska Division of Geological & Geophysical Surveys
   3354 College Road
   Fairbanks, AK 99709-3707
   USA
   

   (907)451-5020 (voice)
   (907)451-5050 (FAX)
   dggspubs@alaska.gov
   

   Hours_of_Service: 8 am to 4:30 pm, Monday through Friday, except State holidays

   Contact_Instructions:

   Please view our website (<http://www.dggs.alaska.gov>) for the latest information on available data. Please contact us using the e-mail address provided above when possible.

2. What's the catalog number I need to order this data set?

   RDF 2014-6

3. What legal disclaimers am I supposed to read?

   The State of Alaska makes no expressed or implied warranties (including warranties for merchantability and fitness) with respect to the character, functions, or capabilities of the electronic data or products or their appropriateness for any user's purposes. In no event will the State of Alaska be liable for any incidental, indirect, special, consequential, or other damages suffered by the user or any other person or entity whether from the use of the electronic services or products or any failure thereof or otherwise. In no event will the State of Alaska's liability to the Requestor or anyone else exceed the fee paid for the electronic service or product.

4. How can I download or order the data?
   • Availability in non-digital form:

     DGGS publications are available as free online downloads or you may purchase paper hard-copies or digital files on CD/DVD or other digital storage media by mail, phone, fax, or email from the DGGS Fairbanks office. To purchase this or other printed reports and maps, contact DGGS by phone (907-451-5020), e-mail (dggspubs@alaska.gov), or fax (907-451-5050). Payment accepted: Cash, check, money order, VISA, or MasterCard. Turnaround time is 1-2 weeks unless special arrangements are made and an express fee is paid. Shipping charge will be the actual cost of postage and will be added to the total amount due. Contact us for the exact shipping amount.

   • Cost to order the data: Contact DGGS for current pricing

   • Availability in digital form:

     Data format:	ASCII tabular files
     Network links:	<http://dx.doi.org/10.14509/27289>

   • Cost to order the data: Free download

Who wrote the metadata?

Dates:

Last modified: 24-Dec-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:

• <http://www.dggs.alaska.gov/metadata/dggs.ext>