Major-oxide, minor-oxide, and trace-element geochemical data from rocks collected in 2008 in the eastern Bonnifield mining district, Fairbanks and Healy quadrangles, Alaska

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• What does this data set describe?
  1. How should this data set be cited?
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What does this data set describe?

1. How should this data set be cited?

   Freeman, L.K., Newberry, R.J., Wypych, Alicja, Werdon, M.B., Szumigala, D.J., Andrew, J.E., and Athey, J.E., 2016, Major-oxide, minor-oxide, and trace-element geochemical data from rocks collected in 2008 in the eastern Bonnifield mining district, Fairbanks and Healy quadrangles, Alaska: Raw Data File RDF 2016-6, Alaska Division of Geological & Geophysical Surveys, Fairbanks, Alaska, United States.

   Online Links:

   • <http://dx.doi.org/10.14509/29653>

   Other_Citation_Details: 2 p.

2. What geographic area does the data set cover?

   West_Bounding_Coordinate: -147.940590

   East_Bounding_Coordinate: -147.132558

   North_Bounding_Coordinate: 64.078221

   South_Bounding_Coordinate: 63.826650

3. What does it look like?

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

   Beginning_Date: 2008

   Ending_Date: 2016

   Currentness_Reference: publication date

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

   Geospatial_Data_Presentation_Form: report and digital data

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 .000001. Longitudes are given to the nearest .000001. Latitude and longitude values are specified in decimal degrees.

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

7. How does the data set describe geographic features?

   rdf2016-6-border.shp

   Outline of the study area. (Source: Alaska Division of Geological & Geophysical Surveys)

   rdf2016-6-rock-major-oxide-trace-element.csv, rdf2016-6-rock-major-oxide-trace-element-methods.csv

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

   SAMPLE_MATERIAL

   Type of material that was sent to the lab for processing. (Source: Alaska Division of Geological & Geophysical Surveys)

   rock

   FIELD_STATION_NUMBER

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

   Generic example of a station identifier: YYAAA9999X: YY=last two digits of year, AAA=geologist's initials (one to three characters), 9999=unique station number.

   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.

   BATCH_NUMBER

   Number provided by the laboratory to identify the samples and analyses included in the work order. (Source: Advanced Instrumentation Laboratory at the University of Alaska Fairbanks)

   The batch numbers assigned by the lab for these results are: rdf2016-6-pressed-pellet-xrf, and rdf2016-6-slab-xrf

   COLLECTOR

   The geologist who collected the sample. (Source: Alaska Division of Geological & Geophysical Surveys)

   The samples presented in this report were collected by: Andrew, J.E., Athey, J.E., Bull, Kate, Freeman, L.K., Newberry, R.J., Szumigala, D.J., and Werdon, M.B.

   LONGITUDE

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

   Range of values
   Minimum:	-147.907655
   Maximum:	-147.165491
   Units:	decimal degrees

   LATITUDE

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

   Range of values
   Minimum:	63.841086
   Maximum:	64.063785
   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.

   SiO2_pct

   Silicon dioxide values measured in percent; Method: Slab X-Ray Fluorescence (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:	38.3
   Maximum:	99.1
   Units:	percent

   Al2O3_pct

   Aluminum oxide values measured in percent; Method: Slab X-Ray Fluorescence (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:	0.4
   Maximum:	22.36
   Units:	percent

   FeOt_pct

   Iron II oxide (+2) total values measured in percent; Method: Slab X-Ray Fluorescence (Source: Advanced Instrumentation Laboratory at the University of Alaska Fairbanks)

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

   Range of values
   Minimum:	0.01
   Maximum:	21.3
   Units:	percent

   Fe2O3t_pct

   Iron III oxide (+3) total values measured in percent; Method: Slab X-Ray Fluorescence (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:	0.03
   Maximum:	19.4
   Units:	percent

   Na2O_pct

   Sodium oxide values measured in percent; Method: Slab X-Ray Fluorescence (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
   Maximum:	8.06
   Units:	percent

   MgO_pct

   Magnesium oxide values measured in percent; Method: Slab X-Ray Fluorescence (Source: Advanced Instrumentation Laboratory at the University of Alaska Fairbanks)

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

   Range of values
   Minimum:	0.02
   Maximum:	14.7
   Units:	percent

   P2O5_pct

   Phosphorus oxide values measured in percent; Method: Slab X-Ray Fluorescence (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
   Maximum:	8.25
   Units:	percent

   K2O_pct

   Potassium oxide values measured in percent; Method: Slab X-Ray Fluorescence (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
   Maximum:	11.1
   Units:	percent

   CaO_pct

   Calcium oxide values measured in percent; Method: Slab X-Ray Fluorescence (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
   Maximum:	24.1
   Units:	percent

   MnO_pct

   Manganese oxide values measured in percent; Method: Slab X-Ray Fluorescence (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
   Maximum:	1.36
   Units:	percent

   TiO2_pct

   Titanium dioxide values measured in percent; Method: Slab X-Ray Fluorescence (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
   Maximum:	3.3
   Units:	percent

   BaO_pct

   Barium oxide values measured in percent; Method: Slab X-Ray Fluorescence (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
   Maximum:	11.1
   Units:	percent

   Ba_ppm

   Barium values measured in parts per million; Method: Slab X-Ray Fluorescence (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:	89.56294847
   Maximum:	6179.843444
   Units:	parts per million

   Rb_ppm

   Rubidium values measured in parts per million; Method: Slab X-Ray Fluorescence (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
   Maximum:	730
   Units:	parts per million

   Sr_ppm

   Strontium values measured in parts per million; Method: Slab X-Ray Fluorescence (Source: Advanced Instrumentation Laboratory at the University of Alaska Fairbanks)

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

   Range of values
   Minimum:	5
   Maximum:	1540
   Units:	parts per million

   Y_ppm

   Yttrium values measured in parts per million; Method: Slab X-Ray Fluorescence (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:	3
   Maximum:	466
   Units:	parts per million

   Zr_ppm

   Zirconium values measured in parts per million; Method: Slab X-Ray Fluorescence (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:	17
   Maximum:	3452
   Units:	parts per million

   Nb_ppm

   Niobium values measured in parts per million; Method: Slab X-Ray Fluorescence (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:	408
   Units:	parts per million

   F_ppm

   Fluorine values measured in parts per million; Method: Slab X-Ray Fluorescence (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
   Maximum:	16600
   Units:	parts per million

   As_ppm

   Arsenic values measured in parts per million; Method: Slab X-Ray Fluorescence (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:	6.79
   Maximum:	286
   Units:	parts per million

   Ce_ppm

   Cerium values measured in parts per million; Method: Slab X-Ray Fluorescence (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:	4.73
   Maximum:	2170
   Units:	parts per million

   Cl_ppm

   Chlorine values measured in parts per million; Method: Slab X-Ray Fluorescence (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:	13.8
   Maximum:	980
   Units:	parts per million

   Cr_ppm

   Chromium values measured in parts per million; Method: Slab X-Ray Fluorescence (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:	1630
   Units:	parts per million

   Cu_ppm

   Copper values measured in parts per million; Method: Slab X-Ray Fluorescence (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:	10.3
   Maximum:	288
   Units:	parts per million

   Ga_ppm

   Gallium values measured in parts per million; Method: Slab X-Ray Fluorescence (Source: Advanced Instrumentation Laboratory at the University of Alaska Fairbanks)

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

   Range of values
   Minimum:	5.96
   Maximum:	1400
   Units:	parts per million

   La_ppm

   Lanthanum values measured in parts per million; Method: Slab X-Ray Fluorescence (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:	22.4
   Maximum:	583
   Units:	parts per million

   Nd_ppm

   Neodymium values measured in parts per million; Method: Slab X-Ray Fluorescence (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:	36.7
   Maximum:	456
   Units:	parts per million

   Ni_ppm

   Nickel values measured in parts per million; Method: Slab X-Ray Fluorescence (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:	15
   Maximum:	533
   Units:	parts per million

   Pb_ppm

   Lead values measured in parts per million; Method: Slab X-Ray Fluorescence (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
   Maximum:	3000
   Units:	parts per million

   S_ppm

   Sulfur values measured in parts per million; Method: Slab X-Ray Fluorescence (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:	24
   Maximum:	15600
   Units:	parts per million

   Th_ppm

   Thorium values measured in parts per million; Method: Slab X-Ray Fluorescence (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:	7.8
   Maximum:	93.3
   Units:	parts per million

   Zn_ppm

   Zinc values measured in parts per million; Method: Slab X-Ray Fluorescence (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:	7.07
   Maximum:	3870
   Units:	parts per million

   V_ppm

   Vanadium values measured in parts per million; Method: Slab X-Ray Fluorescence (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:	18.2
   Maximum:	1110
   Units:	parts per million

   U_ppm

   Uranium values measured in parts per million; Method: Slab X-Ray Fluorescence (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:	4.92
   Maximum:	66.3
   Units:	parts per million

   Sn_ppm

   Tin values measured in parts per million; Method: Slab X-Ray Fluorescence (Source: Advanced Instrumentation Laboratory at the University of Alaska Fairbanks)

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

   Range of values
   Minimum:	5
   Maximum:	216
   Units:	parts per million

   Hf_ppm

   Hafnium values measured in parts per million; Method: Slab X-Ray Fluorescence (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:	66
   Maximum:	102
   Units:	parts per million

   Mo_ppm

   Molybdenum values measured in parts per million; Method: Slab X-Ray Fluorescence (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:	18
   Units:	parts per million

   SiO2_pct_1

   Silicon dioxide values measured in percent; Method: X-Ray Fluorescence (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:	62.6
   Maximum:	64
   Units:	percent

   Al2O3_pct_1

   Aluminum oxide values measured in percent; Method: X-Ray Fluorescence (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:	18.3
   Maximum:	20.8
   Units:	percent

   FeOt_pct_1

   Iron II oxide (+2) total values measured in percent; Method: X-Ray Fluorescence (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:	3.36
   Maximum:	7
   Units:	percent

   Na2O_pct_1

   Sodium oxide values measured in percent; Method: X-Ray Fluorescence (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:	0.6
   Maximum:	2.41
   Units:	percent

   MgO_pct_1

   Magnesium oxide values measured in percent; Method: X-Ray Fluorescence (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:	1.19
   Maximum:	1.36
   Units:	percent

   P2O5_pct_1

   Phosphorus oxide values measured in percent; Method: X-Ray Fluorescence (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:	0.13
   Maximum:	0.31
   Units:	percent

   K2O_pct_1

   Potassium oxide values measured in percent; Method: X-Ray Fluorescence (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:	3.03
   Maximum:	6.99
   Units:	percent

   CaO_pct_1

   Calcium oxide values measured in percent; Method: X-Ray Fluorescence (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:	0.14
   Maximum:	3.38
   Units:	percent

   MnO_pct_1

   Manganese oxide values measured in percent; Method: X-Ray Fluorescence (Source: Advanced Instrumentation Laboratory at the University of Alaska Fairbanks)

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

   Range of values
   Minimum:	0.01
   Maximum:	0.05
   Units:	percent

   TiO2_pct_1

   Titanium dioxide values measured in percent; Method: X-Ray Fluorescence (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:	0.61
   Maximum:	0.99
   Units:	percent

   BaO_pct_1

   Barium oxide values measured in percent; Method: X-Ray Fluorescence (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:	0.11
   Maximum:	0.17
   Units:	percent

   Rb_ppm_1

   Rubidium values measured in parts per million; Method: X-Ray Fluorescence (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:	90
   Maximum:	140
   Units:	parts per million

   Sr_ppm_1

   Strontium values measured in parts per million; Method: X-Ray Fluorescence (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:	66
   Maximum:	107
   Units:	parts per million

   Y_ppm_1

   Yttrium values measured in parts per million; Method: X-Ray Fluorescence (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:	13
   Maximum:	27
   Units:	parts per million

   Zr_ppm_1

   Zirconium values measured in parts per million; Method: X-Ray Fluorescence (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:	237
   Maximum:	238
   Units:	parts per million

   Nb_ppm_1

   Niobium values measured in parts per million; Method: X-Ray Fluorescence (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:	19
   Maximum:	20
   Units:	parts per million

   F_ppm_1

   Fluorine values measured in parts per million; Method: X-Ray Fluorescence (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
   Maximum:	0
   Units:	parts per million

   As_ppm_1

   Arsenic values measured in parts per million; Method: X-Ray Fluorescence (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:	59.3
   Maximum:	59.3
   Units:	parts per million

   Ce_ppm_1

   Cerium values measured in parts per million; Method: X-Ray Fluorescence (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:	131
   Maximum:	304
   Units:	parts per million

   Cl_ppm_1

   Chlorine values measured in parts per million; Method: X-Ray Fluorescence (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:	67.1
   Maximum:	67.1
   Units:	parts per million

   Cr_ppm_1

   Chromium values measured in parts per million; Method: X-Ray Fluorescence (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:	53
   Maximum:	91.3
   Units:	parts per million

   Cu_ppm_1

   Copper values measured in parts per million; Method: X-Ray Fluorescence (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:	31.6
   Maximum:	31.6
   Units:	parts per million

   Ga_ppm_1

   Gallium values measured in parts per million; Method: X-Ray Fluorescence (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:	21.7
   Maximum:	31.6
   Units:	parts per million

   La_ppm_1

   Lanthanum values measured in parts per million; Method: X-Ray Fluorescence (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:	57.4
   Maximum:	110
   Units:	parts per million

   Pb_ppm_1

   Lead values measured in parts per million; Method: X-Ray Fluorescence (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:	47.7
   Maximum:	341
   Units:	parts per million

   S_ppm_1

   Sulfur values measured in parts per million; Method: X-Ray Fluorescence (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:	57.5
   Maximum:	20300
   Units:	parts per million

   Th_ppm_1

   Thorium values measured in parts per million; Method: X-Ray Fluorescence (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:	29.3
   Maximum:	30.7
   Units:	parts per million

   Zn_ppm_1

   Zinc values measured in parts per million; Method: X-Ray Fluorescence (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:	34.9
   Maximum:	43
   Units:	parts per million

   U_ppm_1

   Uranium values measured in parts per million; Method: X-Ray Fluorescence (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:	12.5
   Maximum:	29
   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)
   • Freeman, L.K.
   • Newberry, R.J.
   • Wypych, Alicja
   • Werdon, M.B.
   • Szumigala, D.J.
   • Andrew, J.E.
   • Athey, J.E.

2. Who also contributed to the data set?

   This project is part of the Alaska Airborne Geophysical/Geological Mineral Inventory Program funded by the Alaska State Legislature and managed by the State of Alaska, Department of Natural Resources, Division of Geological & Geophysical Surveys. Partial funding for the geologic mapping and geochemical analyses was also provided through the State of Alaska General Fund and the U.S. Geological Survey STATEMAP Program under award number 08HQAG0051.

3. To whom should users address questions about the data?
   Alaska Division of Geological & Geophysical Surveys
   GIS Manager
   3354 College Rd
   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?

To better understand the geologic history, structure, and geochemistry of lithologic units within the eastern part of the Bonnifield mining district, igneous or possible meta-igneous samples were collected and analyzed for major- and minor-oxide and petrogenetically important trace elements. As a supplement to previously published geochemical data, the analytical results were used to determine mineral composition of the samples as well as potential original tectonic setting.

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: 2008 (process 1 of 4)

   Sample selection - 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. Most samples are 'grab' samples, which were collected for their overall representation of the outcrop.

   Date: 2008 (process 2 of 4)

   Sample preparation - For this study the rocks were cut using a diamond-blade tile saw; foliated and lineated rocks were cut so that the analyzed surface is at right angles to the rock fabric. Surfaces for analysis were lightly polished with a lapidary wheel to provide a smooth surface to minimize X-ray scatter. In selected cases samples were processed into pressed powder pellets.

   Date: 2008 (process 3 of 4)

   Whole-rock geochemistry - X-ray florescence (XRF) spectroscopic analyses were performed at UAF using a PANalytical Axios spectrometer under vacuum. The measurements were standardized using well-characterized, natural, fine-grained rock and pure mineral standards as well as conventional pressed pellets of international rock standards. Because no volatile components were measured and rocks were of varying porosities, the analyses were normalized to 100 percent totals. In the vast majority of cases the original analyses yielded totals of approximately 95 to 102 weight percent. Comparison between these analyses and those produced on the same rocks by conventional pressed pellet (for trace elements) and fused disk (for major and minor oxides) techniques indicates that major- and minor-oxide and trace-element concentrations are most likely within 10 percent of the 'true' concentrations.

   Date: 2016 (process 4 of 4)

   Version history - Published files were updated to correct errors.

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

   Benowitz, J.A., Layer, P.W., and Freeman, L.K., 2011, 40AR/39AR Ages from the East Bonnifield geologic map area, Fairbanks A-1, Fairbanks A-2, Healy D-1, and Healy D-2 quadrangles, Alaska: Raw Data File RDF 2011-2 v. 1.1, Alaska Division of Geological & Geophysical Surveys, Fairbanks, Alaska, United States.

   Online Links:

   • <http://dx.doi.org/10.14509/22482>

   Other_Citation_Details: 22 p

   Burns, L.E., Fugro Airborne Surveys Corp., Stevens Exploration Management Corp., Graham, G.R.C., and Emond, A.M., 2016, Bonnifield mining district electromagnetic and magnetic airborne geophysical survey, data compilation: Geophysical Report GPR 2016-1, Alaska Division of Geological & Geophysical Surveys, Fairbanks, Alaska, United States.

   Online Links:

   • <http://dx.doi.org/10.14509/29557>

   Freeman, L.K., Newberry, R.J., Andrew, J.E., Szumigala, D.J., Werdon, M.B., Athey, J.E., and Burns, L.E., 2013, Geologic setting of syngenetic and epigenetic deposits in the eastern Bonnifield mining district, Alaska (presentation): Alaska Miners Association, 22nd Annual Biennial Mining Conference, March 9-13, 2010: Poster and Presentation Freeman, L.K. and others, 2013, Alaska Division of Geological & Geophysical Surveys, Fairbanks, Alaska, United States.

   Online Links:

   • <http://dx.doi.org/10.14509/25279>

   Other_Citation_Details: 25 p

   Freeman, L.K., Werdon, M.B., Szumigala, D.J., Andrew, J.E., Newberry, R.J., and Athey, J.E., 2009, Geochemical, major-oxide, minor-oxide, trace-element and carbon data from rocks collected in 2008 in the eastern Bonnifield mining district, Fairbanks and Healy quadrangles, Alaska: Raw Data File RDF 2009-1 v. 1.2, Alaska Division of Geological & Geophysical Surveys, Fairbanks, Alaska, United States.

   Online Links:

   • <http://dx.doi.org/10.14509/20041>

   Other_Citation_Details: 69 p

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

1. How well have the observations been checked?

   Location coordinates were derived using hand-held Garmin GPS 12xl GPS units (no differential correction was applied). Estimated position errors calculated by the hand-held GPS were a minimum of 3 m; at many locations the horizon was limited by steep topography, resulting in positional errors of more than 100 m. Coordinates were downloaded to an MS Access database, and sample analyses were programmatically matched to location and field description data using sample numbers. These matches were hand checked against labels on the slabs while processing and synthesizing the data. This geochemical data was collected for initial reconnaissance of the study area and was intended as a supplement to geologic mapping and related geochemical datasets. Although the analytical results presented in this report were qualitatively evaluated by DGGS staff for general consistency with the geologic setting, significant additional study would be required to fully identify and resolve possible inconsistencies between this data and other sources of information.

2. How accurate are the geographic locations?

   Estimated position errors calculated by the hand-held GPS were a minimum of 3 m; at many locations the horizon was limited by steep topography, resulting in positional errors of more than 100 m.

3. How accurate are the heights or depths?

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

   This data release is complete. The data tables have been lightly edited for clarity, but are generally provided as received from the lab.

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

   not applicable

How can someone get a copy of the data set?

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

Access_Constraints:

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

Use_Constraints:

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

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

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

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

   Contact_Instructions:

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

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

   RDF 2016-6

3. What legal disclaimers am I supposed to read?

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

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

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

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

   • Availability in digital form:

     Data format:	ASCII tabular files
     Network links:	<http://dx.doi.org/10.14509/29653>

   • Cost to order the data: Free download

Who wrote the metadata?

Dates:

Last modified: 14-Apr-2016

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>