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

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What does this data set describe?

1. How should this data set be cited?

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

   Online Links:

   • <http://dx.doi.org/10.14509/27181>

   Other_Citation_Details: 6 p.

2. What geographic area does the data set cover?

   West_Bounding_Coordinate: -149.845509

   East_Bounding_Coordinate: -139.476870

   North_Bounding_Coordinate: 63.372633

   South_Bounding_Coordinate: 61.462300

3. What does it look like?

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

   Calendar_Date: 2013

   Currentness_Reference: ground condition

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

   Geospatial_Data_Presentation_Form: digital-data, report

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

      This is a point data set.

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

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

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

7. How does the data set describe geographic features?

   rdf2014-3-border.shp

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

   rdf2014-3-pan-con-trace-element.csv, rdf2014-3-pan-con-trace-element-limits.csv

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

   SAMPLE

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

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

   LATITUDE

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

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

   LONGITUDE

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

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

   WEIGHT_KG

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

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

   BATCH_NUMBER

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

   FA13229306

   DESCRIPTION

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

   Value	Definition
   NULL	We do not provide a description of the sample.

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

   DESCRIP_2

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

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

   Characters greater than 254 of the sample or station description.

   STREAM_W

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

   Value	Definition
   NULL	The estimated average width of stream at the sample site was not recorded by the sample collector

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

   STREAM_D

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

   Value	Definition
   NULL	The estimated average depth of stream at the sample site was not recorded by the sample collector

   Range of values
   Minimum:	0
   Maximum:	20
   Units:	meters

   STREAM_SPD

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

   Value	Definition
   NULL	Blank (NULL) field values indicate that this data was not recorded by the sample collector.
   swift	fast moving water, many riffles, bed and bank are composed of cobbles and gravel with minor sand
   slow	slow current, few riffles, bed and banks are composed of gravel and sand, minor cobbles and silt, organics may be present
   tumbling	step-wise flows with plunges and pools, bed and banks are composed of boulders and cobbles with minor gravel and finer sediment
   ephemeral	dry or nearly dry stream bed

   STREAM_ORD

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

   Value	Definition
   NULL	Blank (NULL) field values indicate that this data was not recorded by the sample collector.

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

   STREAM_SIT

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

   Value	Definition
   alluvium	Natural unconsolidated aggregate deposited by rivers, streams and creeks
   glacial	Natural unconsolidated aggregate deposited by glacial outflow
   colluvium	Natural unconsolidated aggregate resulting from down slope movement of loose rocks and soil

   NUM_SITES

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

   Value	Definition
   NULL	Number of sample sites at the station was not recorded by the sample collector

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

   GRAIN_SIZE

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

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

   SOURCE

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

   Value	Definition
   NULL	Blank (NULL) field values indicate that this data was not recorded by the sample collector.
   boulder/log eddy	Gravel or sand deposited downstream of an obstruction such as a log or boulder
   point bar	Gravel or sand deposited at the downstream end of a gravel bar
   gravel armor	Sediment trapped below pebble or cobble pavement at the leading edge of a gravel bar
   plunge pool	Sand or gravel deposited at the edge of a pool below a water fall
   dry stream	inactive or intermittently active stream bed which was dry when the sample was collected
   stagnant pool	Body of standing water

   DIST_SAMP

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

   Value	Definition
   NULL	The distance between the creek bed and the sample site was not recorded by the sample collector

   Range of values
   Minimum:	0
   Maximum:	30
   Units:	meters

   SED_COLORS

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

   Value	Definition
   NULL	The distance between the creek bed and the sample site was not recorded by the sample collector

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

   INTENSITY

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

   Value	Definition
   weak	Precipitate binds otherwise unconsolidated deposits.
   moderate	Obscures the color of the stream bed materials.

   Ag_ppm

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

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

   Al_pct

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

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

   As_ppm

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

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

   Ba_ppm

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

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

   Be_ppm

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

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

   Bi_ppm

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

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

   Ca_pct

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

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

   Cd_ppm

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

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

   Ce_ppm

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

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

   Co_ppm

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

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

   Cr_ppm

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

   Value	Definition
   -2	Above detection limit.

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

   Cs_ppm

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

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

   Cu_ppm

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

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

   Fe_pct

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

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

   Ga_ppm

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

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

   Ge_ppm

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

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

   Hf_ppm

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

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

   In_ppm

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

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

   K_pct

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

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

   La_ppm

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

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

   Li_ppm

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

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

   Mg_pct

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

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

   Mn_ppm

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

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

   Mo_ppm

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

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

   Na_pct

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

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

   Nb_ppm

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

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

   Ni_ppm

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

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

   P_ppm

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

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

   Pb_ppm

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

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

   Rb_ppm

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

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

   Re_ppm

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

   Value	Definition
   -1	Below detection limit.

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

   S_pct

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

   Value	Definition
   -1	Below detection limit.

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

   Sb_ppm

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

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

   Sc_ppm

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

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

   Se_ppm

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

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

   Sn_ppm

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

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

   Sr_ppm

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

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

   Ta_ppm

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

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

   Te_ppm

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

   Value	Definition
   -1	Below detection limit.

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

   Th_ppm

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

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

   Ti_pct

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

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

   Tl_ppm

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

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

   U_ppm

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

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

   V_ppm

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

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

   W_ppm

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

   Value	Definition
   -1	Below detection limit.

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

   Y_ppm

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

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

   Zn_ppm

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

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

   Zr_ppm

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

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

   Au_ppm

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

   Value	Definition
   -2	Above detection limit.
   -4	Insufficient sample

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

   Pt_ppm

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

   Value	Definition
   -1	Below detection limit.
   -4	Insufficient sample

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

   Pd_ppm

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

   Value	Definition
   -4	Insufficient sample

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

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

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

   SAMPLE

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

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

   LATITUDE

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

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

   LONGITUDE

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

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

   WEIGHT_KG

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

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

   BATCH_NUMBER

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

   FA14005002

   DESCRIPTION

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

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

   DESCRIP_2

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

   Characters greater than 254 of the sample or station description.

   Au_ppm

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

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

   Pt_ppm

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

   Value	Definition
   -1	Below detection limit.

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

   Pd_ppm

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

   Value	Definition
   -1	Below detection limit.

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

   SiO2_pct

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

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

   Al2O3_pct

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

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

   Fe2O3_pct

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

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

   CaO_pct

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

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

   MgO_pct

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

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

   Na2O_pct

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

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

   K2O_pct

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

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

   Cr2O3_pct

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

   Value	Definition
   -1	Below detection limit.

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

   TiO2_pct

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

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

   MnO_pct

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

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

   P2O5_pct

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

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

   SrO_pct

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

   Value	Definition
   -1	Below detection limit.

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

   BaO_pct

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

   Value	Definition
   -1	Below detection limit.

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

   C_pct

   Carbon values measured in percent (pct); Method: Combustion Furnace (Combustion Furnace); Lower detection limit = 0.01 pct; Upper detection limit = 50 pct; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Minerals)

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

   S_pct

   Sulfur values measured in percent (pct); Method: Combustion Furnace (Combustion Furnace); Lower detection limit = 0.01 pct; Upper detection limit = 50 pct; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Minerals)

   Value	Definition
   -1	Below detection limit.

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

   Ba_ppm

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

   Range of values
   Minimum:	21.2
   Maximum:	1595
   Units:	parts per million

   Ce_ppm

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

   Range of values
   Minimum:	1.7
   Maximum:	79.8
   Units:	parts per million

   Cr_ppm

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

   Value	Definition
   -1	Below detection limit.

   Range of values
   Minimum:	10
   Maximum:	3660
   Units:	parts per million

   Cs_ppm

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

   Range of values
   Minimum:	0.09
   Maximum:	4.96
   Units:	parts per million

   Dy_ppm

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

   Range of values
   Minimum:	0.47
   Maximum:	10.7
   Units:	parts per million

   Er_ppm

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

   Range of values
   Minimum:	0.23
   Maximum:	6.77
   Units:	parts per million

   Eu_ppm

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

   Range of values
   Minimum:	0.24
   Maximum:	2.66
   Units:	parts per million

   Ga_ppm

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

   Range of values
   Minimum:	6
   Maximum:	25
   Units:	parts per million

   Gd_ppm

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

   Range of values
   Minimum:	0.51
   Maximum:	10.7
   Units:	parts per million

   Hf_ppm

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

   Range of values
   Minimum:	0.2
   Maximum:	10.5
   Units:	parts per million

   Ho_ppm

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

   Range of values
   Minimum:	0.11
   Maximum:	2.33
   Units:	parts per million

   La_ppm

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

   Range of values
   Minimum:	0.8
   Maximum:	48.3
   Units:	parts per million

   Lu_ppm

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

   Range of values
   Minimum:	0.04
   Maximum:	0.97
   Units:	parts per million

   Nb_ppm

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

   Range of values
   Minimum:	0.3
   Maximum:	30
   Units:	parts per million

   Nd_ppm

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

   Range of values
   Minimum:	1.1
   Maximum:	43.6
   Units:	parts per million

   Pr_ppm

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

   Range of values
   Minimum:	0.24
   Maximum:	10.25
   Units:	parts per million

   Rb_ppm

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

   Range of values
   Minimum:	1.9
   Maximum:	160
   Units:	parts per million

   Sm_ppm

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

   Range of values
   Minimum:	0.4
   Maximum:	11.2
   Units:	parts per million

   Sn_ppm

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

   Value	Definition
   -1	Below detection limit.

   Range of values
   Minimum:	1
   Maximum:	3
   Units:	parts per million

   Sr_ppm

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

   Range of values
   Minimum:	31.6
   Maximum:	981
   Units:	parts per million

   Ta_ppm

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

   Value	Definition
   -1	Below detection limit.

   Range of values
   Minimum:	0.1
   Maximum:	1.9
   Units:	parts per million

   Tb_ppm

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

   Range of values
   Minimum:	0.09
   Maximum:	1.68
   Units:	parts per million

   Th_ppm

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

   Range of values
   Minimum:	0.1
   Maximum:	36.3
   Units:	parts per million

   Tl_ppm

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

   Value	Definition
   -1	Below detection limit.

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

   Tm_ppm

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

   Range of values
   Minimum:	0.03
   Maximum:	0.93
   Units:	parts per million

   U_ppm

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

   Value	Definition
   -1	Below detection limit.

   Range of values
   Minimum:	0.06
   Maximum:	5.1
   Units:	parts per million

   V_ppm

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

   Range of values
   Minimum:	12
   Maximum:	1495
   Units:	parts per million

   W_ppm

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

   Value	Definition
   -1	Below detection limit.

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

   Y_ppm

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

   Range of values
   Minimum:	2.6
   Maximum:	59.6
   Units:	parts per million

   Yb_ppm

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

   Range of values
   Minimum:	0.3
   Maximum:	6.51
   Units:	parts per million

   Zr_ppm

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

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

   As_ppm

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

   Value	Definition
   -1	Below detection limit.

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

   Bi_ppm

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

   Value	Definition
   -1	Below detection limit.

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

   Hg_ppm

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

   Value	Definition
   -1	Below detection limit.

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

   Sb_ppm

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

   Value	Definition
   -1	Below detection limit.

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

   Se_ppm

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

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

   Te_ppm

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

   Value	Definition
   -1	Below detection limit.

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

   LOI_pct

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

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

   Total_pct

   Total values measured in percent (pct); Method: Calculation (Calculation); Lower detection limit = 0.01 pct; Upper detection limit = 100 pct; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Minerals)

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

   Ag_ppm

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

   Value	Definition
   -1	Below detection limit.

   Cd_ppm

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

   Value	Definition
   -1	Below detection limit.

   Range of values
   Minimum:	0.5
   Maximum:	0.8
   Units:	parts per million

   Co_ppm

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

   Range of values
   Minimum:	2
   Maximum:	134
   Units:	parts per million

   Cu_ppm

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

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

   Li_ppm

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

   Value	Definition
   -1	Below detection limit.

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

   Mo_ppm

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

   Value	Definition
   -1	Below detection limit.

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

   Ni_ppm

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

   Value	Definition
   -1	Below detection limit.

   Range of values
   Minimum:	1
   Maximum:	990
   Units:	parts per million

   Pb_ppm

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

   Value	Definition
   -1	Below detection limit.

   Range of values
   Minimum:	2
   Maximum:	16
   Units:	parts per million

   Sc_ppm

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

   Range of values
   Minimum:	3
   Maximum:	44
   Units:	parts per million

   Zn_ppm

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

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

   rdf2014-3-rock-trace-element.csv, rdf2014-3-rock-trace-element-limits.csv

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

   SAMPLE

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

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

   LATITUDE

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

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

   LONGITUDE

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

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

   WEIGHT_KG

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

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

   BATCH_NUMBER

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

   FA14005001

   DESCRIPTION

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

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

   DESCRIP_2

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

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

   Characters greater than 254 of the sample or station description.

   Au_ppm_1

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

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

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

   Pt_ppm_1

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

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

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

   Pd_ppm_1

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

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

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

   Au_ppm_2

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

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

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

   Au_ppm_3

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

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

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

   Pt_ppm_2

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

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

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

   Pd_ppm_2

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

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

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

   Ag_ppm_1

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

   Value	Definition
   -2	Above detection limit.

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

   Al_pct

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

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

   As_ppm

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

   Value	Definition
   -1	Below detection limit.

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

   Ba_ppm

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

   Value	Definition
   -1	Below detection limit.

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

   Be_ppm

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

   Value	Definition
   -1	Below detection limit.

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

   Bi_ppm

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

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

   Ca_pct

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

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

   Cd_ppm

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

   Value	Definition
   -1	Below detection limit.

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

   Ce_ppm

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

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

   Co_ppm

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

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

   Cr_ppm

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

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

   Cs_ppm

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

   Value	Definition
   -1	Below detection limit.

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

   Cu_ppm

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

   Value	Definition
   -2	Above detection limit.

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

   Fe_pct

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

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

   Ga_ppm

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

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

   Ge_ppm

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

   Value	Definition
   -1	Below detection limit.

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

   Hf_ppm

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

   Value	Definition
   -1	Below detection limit.

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

   In_ppm

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

   Value	Definition
   -1	Below detection limit.

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

   K_pct

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

   Value	Definition
   -1	Below detection limit.

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

   La_ppm

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

   Value	Definition
   -1	Below detection limit.

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

   Li_ppm

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

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

   Mg_pct

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

   Value	Definition
   -1	Below detection limit.

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

   Mn_ppm

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

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

   Mo_ppm

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

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

   Na_pct

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

   Value	Definition
   -1	Below detection limit.

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

   Nb_ppm

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

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

   Ni_ppm

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

   Value	Definition
   -2	Above detection limit.

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

   P_ppm

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

   Value	Definition
   -1	Below detection limit.

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

   Pb_ppm

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

   Value	Definition
   -1	Below detection limit.

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

   Rb_ppm

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

   Value	Definition
   -1	Below detection limit.

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

   Re_ppm

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

   Value	Definition
   -1	Below detection limit.

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

   S_pct

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

   Value	Definition
   -1	Below detection limit.

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

   Sb_ppm

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

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

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

   Sc_ppm

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

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

   Se_ppm

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

   Value	Definition
   -1	Below detection limit.

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

   Sn_ppm

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

   Value	Definition
   -1	Below detection limit.

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

   Sr_ppm

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

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

   Ta_ppm

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

   Value	Definition
   -1	Below detection limit.

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

   Te_ppm

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

   Value	Definition
   -1	Below detection limit.

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

   Th_ppm

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

   Value	Definition
   -1	Below detection limit.

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

   Ti_pct

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

   Value	Definition
   -1	Below detection limit.

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

   Tl_ppm

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

   Value	Definition
   -1	Below detection limit.

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

   U_ppm

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

   Value	Definition
   -1	Below detection limit.

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

   V_ppm

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

   Value	Definition
   -1	Below detection limit.

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

   W_ppm

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

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

   Y_ppm

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

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

   Zn_ppm

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

   Value	Definition
   -1	Below detection limit.

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

   Zr_ppm

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

   Value	Definition
   -1	Below detection limit.

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

   Ag_ppm_2

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

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

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

   Cu_pct

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

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

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

   Ni_pct

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

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

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

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

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

   SAMPLE

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

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

   LATITUDE

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

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

   LONGITUDE

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

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

   DESCRIPTION

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

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

   DESCRIP_2

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

   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 (XRF); Lower detection limit = 0.1 pct; Upper detection limit = 100 pct; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Advanced Instrumentation Laboratory at the University of Alaska Fairbanks)

   Range of values
   Minimum:	19.73
   Maximum:	85.907
   Units:	percent

   Al2O3_pct

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

   Range of values
   Minimum:	3.36176
   Maximum:	17.4
   Units:	percent

   BaO_pct

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

   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:	0.00801
   Maximum:	1.29
   Units:	percent

   CaO_pct

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

   Range of values
   Minimum:	0.0954
   Maximum:	37.3
   Units:	percent

   FeO_pct

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

   Range of values
   Minimum:	0.315
   Maximum:	17.4
   Units:	percent

   K2O_pct

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

   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:	0.00293
   Maximum:	4.82
   Units:	percent

   MgO_pct

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

   Range of values
   Minimum:	0.090625
   Maximum:	47
   Units:	percent

   MnO_pct

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

   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:	0.00487
   Maximum:	0.399
   Units:	percent

   Na2O_pct

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

   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:	0.054385
   Maximum:	6.8693
   Units:	percent

   P2O5_pct

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

   Range of values
   Minimum:	0.006636
   Maximum:	26.11
   Units:	percent

   S_pct

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

   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:	0.0015
   Maximum:	1.71
   Units:	percent

   TiO2_pct

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

   Range of values
   Minimum:	0.05014
   Maximum:	2.7324
   Units:	percent

   F_pct

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

   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:	0.686
   Maximum:	1.44
   Units:	percent

   As_ppm

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

   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:	214
   Units:	parts per million

   Bi_ppm

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

   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:	35
   Maximum:	35
   Units:	parts per million

   Cl_ppm

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

   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:	25
   Maximum:	2650
   Units:	parts per million

   Co_ppm

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

   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:	7
   Maximum:	167
   Units:	parts per million

   Cr_ppm

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

   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:	7
   Maximum:	5406
   Units:	parts per million

   Cu_ppm

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

   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:	120
   Maximum:	43700
   Units:	parts per million

   Ga_ppm

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

   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:	41
   Units:	parts per million

   Mo_ppm

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

   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:	7
   Maximum:	17
   Units:	parts per million

   Ni_ppm

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

   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:	18
   Maximum:	5594
   Units:	parts per million

   Pb_ppm

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

   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:	4
   Maximum:	48
   Units:	parts per million

   Th_ppm

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

   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:	27
   Maximum:	27
   Units:	parts per million

   U_ppm

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

   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:	57
   Maximum:	57
   Units:	parts per million

   V_ppm

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

   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:	28
   Maximum:	1870
   Units:	parts per million

   W_ppm

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

   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:	57
   Maximum:	129
   Units:	parts per million

   Zn_ppm

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

   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:	12
   Maximum:	397
   Units:	parts per million

   Rb_ppm

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

   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:	145
   Units:	parts per million

   Sr_ppm

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

   Range of values
   Minimum:	11
   Maximum:	1440
   Units:	parts per million

   Y_ppm

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

   Range of values
   Minimum:	3
   Maximum:	73
   Units:	parts per million

   Zr_ppm

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

   Range of values
   Minimum:	1
   Maximum:	392
   Units:	parts per million

   Nb_ppm

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

   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:	31
   Units:	parts per million

   Ce_ppm

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

   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:	242
   Units:	parts per million

   rdf2014-3-stream-sed-trace-element.csv, rdf2014-3-stream-sed-trace-element-limits.csv

   Trace-element analysis of stream-sediment and soil samples.. (Source: Alaska Division of Geological & Geophysical Surveys)

   SAMPLE

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

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

   LATITUDE

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

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

   LONGITUDE

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

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

   WEIGHT_KG

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

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

   BATCH_NUMBER

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

   FA14005003

   DESCRIPTION

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

   Value	Definition
   NULL	We do not provide a description of the sample.

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

   STREAM_W

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

   Value	Definition
   NULL	The estimated average width of stream at the sample site was not recorded by the sample collector

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

   STREAM_D

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

   Value	Definition
   NULL	The estimated average depth of stream at the sample site was not recorded by the sample collector

   Range of values
   Minimum:	0
   Maximum:	20
   Units:	meters

   STREAM_SPD

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

   Value	Definition
   NULL	Blank (NULL) field values indicate that this data was not recorded by the sample collector.
   swift	fast moving water, many riffles, bed and bank are composed of cobbles and gravel with minor sand
   slow	slow current, few riffles, bed and banks are composed of gravel and sand, minor cobbles and silt, organics may be present
   tumbling	step-wise flows with plunges and pools, bed and banks are composed of boulders and cobbles with minor gravel and finer sediment
   ephemeral	dry or nearly dry stream bed

   STREAM_ORD

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

   Value	Definition
   NULL	Blank (NULL) field values indicate that this data was not recorded by the sample collector.

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

   STREAM_SIT

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

   Value	Definition
   alluvium	Natural unconsolidated aggregate deposited by rivers, streams and creeks
   glacial	Natural unconsolidated aggregate deposited by glacial outflow
   colluvium	Natural unconsolidated aggregate resulting from down slope movement of loose rocks and soil

   NUM_SITES

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

   Value	Definition
   NULL	Number of sample sites at the station was not recorded by the sample collector

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

   GRAIN_SIZE

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

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

   SOURCE

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

   Value	Definition
   NULL	Blank (NULL) field values indicate that this data was not recorded by the sample collector.
   boulder/log eddy	Gravel or sand deposited downstream of an obstruction such as a log or boulder
   point bar	Gravel or sand deposited at the downstream end of a gravel bar
   gravel armor	Sediment trapped below pebble or cobble pavement at the leading edge of a gravel bar
   plunge pool	Sand or gravel deposited at the edge of a pool below a water fall
   dry stream	inactive or intermittently active stream bed which was dry when the sample was collected
   stagnant pool	Body of standing water

   DIST_SAMP

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

   Value	Definition
   NULL	Number of sample sites at the station was not recorded by the sample collector

   Range of values
   Minimum:	0
   Maximum:	30
   Units:	meters

   SED_COLORS

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

   Value	Definition
   NULL	Number of sample sites at the station was not recorded by the sample collector

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

   INTENSITY

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

   Value	Definition
   weak	Precipitate binds otherwise unconsolidated deposits.
   moderate	Obscures the color of the stream bed materials.

   Au_ppm

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

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

   Pt_ppm

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

   Value	Definition
   -1	Below detection limit.

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

   Pd_ppm

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

   Value	Definition
   -1	Below detection limit.

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

   Ag_ppm

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

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

   Al_ppm

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

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

   As_ppm

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

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

   Ba_ppm

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

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

   Be_ppm

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

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

   Bi_ppm

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

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

   Ca_ppm

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

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

   Cd_ppm

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

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

   Ce_ppm

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

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

   Co_ppm

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

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

   Cr_ppm

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

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

   Cs_ppm

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

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

   Cu_ppm

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

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

   Fe_ppm

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

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

   Ga_ppm

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

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

   Ge_ppm

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

   Value	Definition
   -1	Below detection limit.

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

   Hf_ppm

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

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

   In_ppm

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

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

   K_ppm

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

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

   La_ppm

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

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

   Li_ppm

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

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

   Mg_ppm

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

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

   Mn_ppm

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

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

   Mo_ppm

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

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

   Na_ppm

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

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

   Nb_ppm

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

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

   Ni_ppm

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

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

   P_ppm

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

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

   Pb_ppm

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

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

   Rb_ppm

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

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

   Re_ppm

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

   Value	Definition
   -1	Below detection limit.

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

   S_ppm

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

   Value	Definition
   -1	Below detection limit.

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

   Sb_ppm

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

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

   Sc_ppm

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

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

   Se_ppm

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

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

   Sn_ppm

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

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

   Sr_ppm

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

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

   Ta_ppm

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

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

   Te_ppm

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

   Value	Definition
   -1	Below detection limit.

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

   Th_ppm

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

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

   Ti_ppm

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

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

   Tl_ppm

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

   Value	Definition
   -1	Below detection limit.

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

   U_ppm

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

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

   V_ppm

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

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

   W_ppm

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

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

   Y_ppm

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

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

   Zn_ppm

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

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

   Zr_ppm

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

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

Who produced the data set?

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

2. Who also contributed to the data set?

   This program of stream-sediment, pan-concentrate, and rock sampling was conducted as part of the State's Strategic Minerals Assessment project, an initiative designed to evaluate Alaska's potential for rare-earth elements, PGEs, and other similarly supply-challenged resources. This project is funded by the Alaska State Legislature and managed by State of Alaska, Department of Natural Resources, Division of Geological & Geophysical Surveys.

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

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

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

Why was the data set created?

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

How was the data set created?

1. From what previous works were the data drawn?

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

   Date: 2013 (process 1 of 12)

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

   Date: 2013 (process 2 of 12)

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

   Date: 2013 (process 3 of 12)

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

   Date: 2013 (process 4 of 12)

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

   Date: 2013 (process 5 of 12)

   Slab XRF sample preparation - Slab XRF samples were cut into rough discs 4 cm in diameter and polished on a lapidary wheel.

   Date: 2013 (process 6 of 12)

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

   Date: 2013 (process 7 of 12)

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

   Date: 2013 (process 8 of 12)

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

   Date: 2013 (process 9 of 12)

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

   Date: 2013 (process 10 of 12)

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

   Date: 2013 (process 11 of 12)

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

   Date: 2013 (process 12 of 12)

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

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

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

   Online Links:

   • <http://dx.doi.org/10.14509/27022>

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

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

1. How well have the observations been checked?

   In addition to ALS Minerals' internal quality-control program accredited to ISO/IEC 17025-2005 standards, DGGS monitored analysis quality by inserting igneous-rock and ore-geochemical-pulp standards with known compositions into the sample roster for every sample batch. In the case of slab XRF analysis, we report measured values which are above or below instrument detection limits when they are provided to us by the originating lab. Null values in the slab XRF tables indicate that the chemical species was below detection limits. NULL values in the tables from ALS minerals tables indicate that the analysis was not ordered for the sample. Users should contact the originating labs for additional information about detection limits and reporting procedures. Brief sample descriptions are based principally on field observations with some thin-section details added. Prior to publication, DGGS staff reconciled sample numbering discrepancies between lab sample numbers and field data records. All sample sample numbers reported in this release have been standardized to be consistent and may differ slightly with the sample numbers listed on the Certificate of Assay.

2. How accurate are the geographic locations?

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

3. How accurate are the heights or depths?

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

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

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

   not applicable

How can someone get a copy of the data set?

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

Access_Constraints:

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

Use_Constraints:

Any hard copies or published datasets utilizing these datasets shall clearly indicate their source. If the user has modified the data in any way, the user is obligated to describe the types of modifications the user has made. The user specifically agrees not to misrepresent these datasets, nor to imply that changes made by the user were approved by the State of Alaska, Department of Natural Resources, Division of Geological &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 2014-3

3. What legal disclaimers am I supposed to read?

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

4. How can I download or order the data?
   • 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/10.14509/27181>

   • Cost to order the data: Free download

Who wrote the metadata?

Dates:

Last modified: 24-Oct-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>