Geochemical, major-oxide, minor-oxide, trace-element and carbon data from rocks collected in 2011 in the Moran area, Tanana and Melozitna Quadrangles, Alaska

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What does this data set describe?

Title:

Geochemical, major-oxide, minor-oxide, trace-element and carbon data from rocks collected in 2011 in the Moran area, Tanana and Melozitna Quadrangles, Alaska

Abstract:

Mineral-resources personnel from the Alaska Division of Geological & Geophysical Surveys carried out a geologic field survey, including mapping and sampling in the Moran area in the Tanana A-6 and B-6 quadrangles, and the Melozitna A-1, A2, B-1, and B-2 quadrangles, Alaska from June 17 to August 15, 2011. The fieldwork provides basic information critical to building an understanding of Alaska geology and is part of an integrated program of airborne geophysical surveys followed by geologic mapping. During 2011, 212 rock samples were collected for geochemical trace-element analysis, 58 rock samples were collected for whole-rock (major- and minor-oxide and petrogenetically important trace elements tables) analyses, and two samples were collected for analysis of non-carbonate carbon content. Additionally, 352 polished rock slabs were analyzed for whole-rock and petrogenetically important trace elements.

Supplemental_Information:

The DGGS metadata standard extends the FGDC standard to also include several elements that are required to facilitate our internal data management. These elements (referred to as "layers") relate individual data items to a common dataset. The dataset is available in tabular format as comma delimited ascii files organized into four layers, as described in this metadata file under the "Entity_and_Attribute_Information" section. The layers are as follows:

Trace-element rock geochemistry: sample locations and descriptions, geochemical data, analytical methods and detection limits (Tables 1, 2, 3)
Whole-rock major-oxide, minor-oxide, trace-element: sample locations and descriptions, geochemical data, analytical methods and detection limits (Tables 4, 5, 6)
Non-carbonate carbon geochemistry: sample locations and descriptions, and geochemical data (Table 7)
Rock slab major-oxide, minor-oxide, trace-element: sample locations and descriptions, geochemical data, analytical methods and detection limits (Tables 8 and 9)

How should this data set be cited?
Lough, T.A., Freeman, L.K., Elliot, B.A., Griesel, G.A., Newberry, R.J., and Szumigala, D.J., 2011, Geochemical, major-oxide, minor-oxide, trace-element and carbon data from rocks collected in 2011 in the Moran area, Tanana and Melozitna Quadrangles, Alaska: Raw Data File RDF 2011-4, State of Alaska, Department of Natural Resources, Division of Geological & Geophysical Surveys, Fairbanks, AK, USA.
Online Links:
- <http://dx.doi.org/10.14509/23002>
Other_Citation_Details: 118 pp.
What geographic area does the data set cover?

West_Bounding_Coordinate: -154.735482

East_Bounding_Coordinate: -152.097737

North_Bounding_Coordinate: 65.507439

South_Bounding_Coordinate: 65.107451
What does it look like?
Does the data set describe conditions during a particular time period?

Beginning_Date: 17-Jun-2011
Ending_Date: 15-Aug-2011
Currentness_Reference: ground condition
What is the general form of this data set?

Geospatial_Data_Presentation_Form: tabular digital data, report
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?
  
  Grid_Coordinate_System_Name: Universal Transverse Mercator
  
  Universal_Transverse_Mercator:
  
  UTM_Zone_Number: 5
  
  Transverse_Mercator:
  
  Scale_Factor_at_Central_Meridian: 0.9996
  
  Longitude_of_Central_Meridian: -153
  
  Latitude_of_Projection_Origin: 0
  
  False_Easting: 500000
  
  False_Northing: 0
  
  Planar coordinates are encoded using coordinate pair
  Abscissae (x-coordinates) are specified to the nearest 5
  Ordinates (y-coordinates) are specified to the nearest 11
  Planar coordinates are specified in meters
  
  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 6378137.
  The flattening of the ellipsoid used is 1/298.25722210088.

How does the data set describe geographic features?

Table1.csv

Location and description of rocks collected for trace metal geochemistry in the Moran area, Tanana and Melozitna quadrangles, Alaska (Source: Alaska Division of Geological & Geophysical Surveys)

Sample Number

Unique sample identifier (Source: Alaska Division of Geological & Geophysical Surveys)

Generic example of unique sample identifier: 20YYAAA9999X: YY=last two digits of year, AAA=geologist's initials (one to three characters), 9999=unique station number, X=unique alpha character designating a sample was taken at the field station. Geologists' initials represent the following: 'BAE' = Brent Elliott; 'GG' = Gerry Griesel; 'LF' = Larry Freeman;'RN' = Rainer Newberry; 'Z' = David Szumigala.

Latitude

Latitude, NAD 27 (Source: Alaska Division of Geological & Geophysical Surveys)

Range of values
Minimum:	65.1075
Maximum:	65.5074
Units:	decimal degrees

Longitude

Longitude, NAD 27 (Source: Alaska Division of Geological & Geophysical Surveys)

Range of values
Minimum:	-154.7355
Maximum:	-152.4841
Units:	decimal degrees

UTM E

Easting, UTM zone 5, NAD 27 (Source: Alaska Division of Geological & Geophysical Surveys)

Range of values
Minimum:	418494
Maximum:	524021
Units:	meters

UTM N

Northing, UTM zone 05, NAD 27 (Source: Alaska Division of Geological & Geophysical Surveys)

Range of values
Minimum:	7221357
Maximum:	7264835
Units:	meters

Zone

UTM Zone 05W for all samples in this data set (Source: Alaska Division of Geological & Geophysical Surveys)

05W is UTM zone for all samples in this data set

Description

First part of brief rock description (Source: Alaska Division of Geological & Geophysical Surveys)

Characters 1 to 255 of brief rock description

Description Extension 1

Extension of brief rock description for descriptions greater than 255 characters in length (Source: Alaska Division of Geological & Geophysical Surveys)

Characters 256 to 310 of brief rock description

Description Extension 2

Extension of brief rock description for descriptions greater than 310 characters in length (Source: Alaska Division of Geological & Geophysical Surveys)

Characters 310 to 365 of brief rock description

Table2.csv

Trace-element geochemical analyses for rocks collected in the Moran area, Tanana and Melozitna quadrangles, Alaska. Elements that were not analyzed for a particular sample are left as an empty or null field. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex.)

Sample Number

Unique sequential sample identifier (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex)

Au

Gold values acquired by analysis with inductive coupled plasma-atomic emission spectroscopy following a 30g fire assay fusion (FA-ICP-AES) and shown in parts per million (ppm). (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex.)

Value	Definition
<0.001	Below detection limit of 0.001 ppm
>10	Above upper detection limit of 10 ppm
---	Null value; element not analyzed by this method

Range of values
Minimum:	0.001
Maximum:	9.29
Units:	ppm

Au(2)

Value	Definition
<0.001	Below detection limit of 0.001 ppm
---	Null value; element not analyzed by this method

Range of values
Minimum:	0.001
Maximum:	0.004
Units:	ppm

Au(3)

Duplicate gold values acquired by analysis with inductive coupled plasma-atomic emission spectroscopy following a 30g fire assay fusion (FA-ICP-AES) and shown in parts per million (ppm). (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex.)

Value	Definition
---	Null value; element not analyzed by this method

Range of values
Minimum:	0.001
Maximum:	9.29
Units:	ppm

Au(+)

Gold values acquired by a 30g traditional fire assay fusion with a gravimetric finish (FA-GRAV) and shown in parts per million (ppm). This proceedure was done on any samples that had greater than detection limit (10 ppm Au) on the original FA-ICP-AES analysis (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex.)

Value	Definition
---	Null value; element not analyzed by this method

Range of values
Minimum:	0.05
Maximum:	1000
Units:	ppm

Ag

Silver values acquired by analysis with inductively coupled plasma-atomic emission spectroscopy (ICP-AES) after four-acid digestion and shown in parts per million (ppm). (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex.)

Value	Definition
<0.5	Below detection limit of 0.5 ppm

Range of values
Minimum:	0.5
Maximum:	100
Units:	ppm

Al

Aluminum values acquired by analysis with inductively coupled plasma-atomic emission spectroscopy (ICP-AES) after four-acid digestion and shown in percent (%). (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex.)

Range of values
Minimum:	0.01
Maximum:	50
Units:	%

As

Arsenic values acquired by analysis with inductively coupled plasma-atomic emission spectroscopy (ICP-AES) after four-acid digestion and shown in parts per million (ppm). (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex.)

Value	Definition
<5	Below detection limit of 5 ppm
>10000	Above upper detection limit of 10000 ppm

Range of values
Minimum:	5
Maximum:	10000
Units:	ppm

As(+)

Arsenic values acquired by analysis with inductively coupled plasma-atomic emission spectroscopy (ICP-AES) after four-acid digestion and shown in % (percent). This proceedure was done on any samples that had greater than detection limit (5 ppm As) on the original FA-ICP-AES analysis (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex.)

Value	Definition
---	Null value; element not analyzed by this method
pending	Incomplete analyses. These data will appear in a revised geochemical report when they are complete and have been quality checked.

Range of values
Minimum:	.01
Maximum:	30
Units:	%

Ba

Barium values acquired by analysis with inductively coupled plasma-atomic emission spectroscopy (ICP-AES) after four-acid digestion and shown in parts per million (ppm). Possibly incomplete digestion for this element, depending on sample mineralogy, may result in lower analytical results. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex.)

Value	Definition
<10	Below detection limit of 10 ppm

Range of values
Minimum:	10
Maximum:	10000
Units:	ppm

Be

Beryllium values acquired by analysis with inductively coupled plasma-atomic emission spectroscopy (ICP-AES) after four-acid digestion and shown in parts per million (ppm). Possibly incomplete digestion for this element, depending on mineralogy of sample, may result in lower analytical results (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex.)

Value	Definition
<0.5	Below detection limit of 0.5 ppm

Range of values
Minimum:	0.5
Maximum:	1000
Units:	ppm

Bi

Bismuth values acquired by analysis with inductively coupled plasma-atomic emission spectroscopy (ICP-AES) after four-acid digestion and shown in parts per million (ppm). (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex.)

Value	Definition
<2	Below detection limit of 2 ppm

Range of values
Minimum:	2
Maximum:	10000
Units:	ppm

Ca

Calcium values acquired by analysis with inductively coupled plasma-atomic emission spectroscopy (ICP-AES) after four-acid digestion and shown in percent (%). (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex.)

Value	Definition
<0.01	Below detection limit of 0.01%

Range of values
Minimum:	0.01
Maximum:	50
Units:	%

Cd

Cadmium values acquired by analysis with inductively coupled plasma-atomic emission spectroscopy (ICP-AES) after four-acid digestion and shown in parts per million (ppm). (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex.)

Value	Definition
<0.5	Below detection limit of 0.5 ppm

Range of values
Minimum:	0.5
Maximum:	1000
Units:	ppm

Co

Cobalt values acquired by analysis with inductively coupled plasma-atomic emission spectroscopy (ICP-AES) after four-acid digestion and shown in parts per million (ppm). (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex.)

Value	Definition
<1	Below detection limit of 1 ppm

Range of values
Minimum:	1
Maximum:	10000
Units:	ppm

Cr

Chromium values acquired by analysis with inductively coupled plasma-atomic emission spectroscopy (ICP-AES) after four-acid digestion and shown in parts per million (ppm). Possibly incomplete digestion for this element, depending on mineralogy of sample, may result in lower analytical results. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex.)

Range of values
Minimum:	1
Maximum:	10000
Units:	ppm

Cu

Copper values acquired by analysis with inductively coupled plasma-atomic emission spectroscopy (ICP-AES) after four acid-digestion and shown in parts per million (ppm). (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex.)

Range of values
Minimum:	1
Maximum:	10000
Units:	ppm

Fe

Iron values acquired by analysis with inductively coupled plasma-atomic emission spectroscopy (ICP-AES) after four-acid digestion and shown in percent (%). (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex.)

Range of values
Minimum:	0.01
Maximum:	50
Units:	%

Ga

Gallium values acquired by analysis with inductively coupled plasma-atomic emission spectroscopy (ICP-AES) and after four-acid digestion shown in parts per million (ppm). (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex.)

Value	Definition
<10	Below detection limit of 10 ppm

Range of values
Minimum:	10
Maximum:	10000
Units:	ppm

K

Potassium values acquired by analysis with inductively coupled plasma-atomic emission spectroscopy (ICP-AES) after four-acid digestion and shown in percent (%). (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex.)

Value	Definition
<.01	Below detection limit of .01 %

Range of values
Minimum:	0.01
Maximum:	10
Units:	%

La

Lanthanum values acquired by analysis with inductively coupled plasma-atomic emission spectroscopy (ICP-AES) after four-acid digetsion and shown in parts per million (ppm). (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex.)

Value	Definition
<10	Below detection limit of 10 ppm

Range of values
Minimum:	10
Maximum:	10000
Units:	ppm

Mg

Magnesium values acquired by analysis with inductively coupled plasma-atomic emission spectroscopy (ICP-AES) after four-acid digestion and shown in percent (%). (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex.)

Value	Definition
<0.01	Below detection limit of 0.01 %

Range of values
Minimum:	0.01
Maximum:	50
Units:	%

Mn

Manganese values acquired by analysis with inductively coupled plasma-atomic emission spectroscopy (ICP-AES) after four-acid digestion and shown in parts per million (ppm). (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex.)

Range of values
Minimum:	5
Maximum:	100000
Units:	ppm

Mo

Molybdenum values acquired by analysis with inductively coupled plasma-atomic emission spectroscopy (ICP-AES) after four-acid digestion and shown in parts per million (ppm). (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex.)

Value	Definition
<1	Below detection limit of 1 ppm

Range of values
Minimum:	1
Maximum:	10000
Units:	ppm

Na

Sodium values acquired by analysis with inductively coupled plasma-atomic emission spectroscopy (ICP-AES) after four-acid digestion and shown in percent (%). (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex.)

Value	Definition
<.01	Below detection limit of .01%

Range of values
Minimum:	0.01
Maximum:	10
Units:	%

Ni

Nickel values acquired by analysis with inductively coupled plasma-atomic emission spectroscopy (ICP-AES) after four-acid digestion and shown in parts per million (ppm). (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex.)

Value	Definition
<1	Below detection limit of 1 ppm

Range of values
Minimum:	1
Maximum:	10000
Units:	ppm

P

Value	Definition
>10000	Above upper detection limit of 10000 ppm

Range of values
Minimum:	10
Maximum:	10000
Units:	ppm

P(+)

Phosphorus values acquired by analysis with inductively coupled plasma-atomic emission spectroscopy (ICP-AES) after four-acid digestion and shown in parts per million (ppm). This proceedure was done on any samples that had greater than detection limit (10000 ppm P) on the original FA-ICP-AES analysis (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex.)

Value	Definition
pending	Incomplete analyses. These data will appear in a revised geochemical report when they are complete and have been quality checked.
---	Null value; element not analyzed by this method

Range of values
Minimum:	50
Maximum:	100000
Units:	ppm

Pb

Lead values acquired by analysis with inductively coupled plasma-atomic emission spectroscopy (ICP-AES) after four-acid digestion and shown in parts per million (ppm). (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex.)

Value	Definition
<2	Below detection limit of 2 ppm

Range of values
Minimum:	2
Maximum:	10000
Units:	ppm

Pd

Palladium values acquired by analysis with inductive coupled plasma-atomic emission spectroscopy following a 30g fire assay fusion (FA-ICP-AES) and shown in parts per million (ppm). (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex.)

Value	Definition
---	Null value; element not analyzed by this method

Range of values
Minimum:	0.001
Maximum:	10
Units:	ppm

Pt

Platinum values acquired by analysis with inductive coupled plasma-atomic emission spectroscopy following a 30g fire assay fusion (FA-ICP-AES) and shown in parts per million (ppm). (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex.)

Value	Definition
---	Null value; element not analyzed by this method

Range of values
Minimum:	0.005
Maximum:	10
Units:	ppm

S

Sulfur values acquired by analysis with inductively coupled plasma-atomic emission spectroscopy (ICP-AES) after four-acid digestion and shown in percent (%). (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex.)

Value	Definition
<0.01	Below detection limit of 0.01 %

Range of values
Minimum:	0.01
Maximum:	10
Units:	%

Sb

Antimony values acquired by analysis with inductively coupled plasma-atomic emission spectroscopy (ICP-AES) after four-acid digestion and shown in parts per million (ppm). (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex.)

Value	Definition
<5	Below detection limit of 5 ppm

Range of values
Minimum:	5
Maximum:	10000
Units:	ppm

Sc

Scandium values acquired by analysis with inductively coupled plasma-atomic emission spectroscopy (ICP-AES) after four-acid digestion and shown in parts per million (ppm). (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex.)

Value	Definition
<1	Below detection limit of 1 ppm

Range of values
Minimum:	1
Maximum:	10000
Units:	ppm

Sn

Tin values acquired by analysis with pressed pellet wavelength dispersive X-ray fluorescence (ppm). (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex.)

Value	Definition
<5	Below detection limit of 5 ppm
---	Null value; element not analyzed by this method

Range of values
Minimum:	5
Maximum:	10000
Units:	ppm

Sr

Strontium values acquired by analysis with inductively coupled plasma-atomic emission spectroscopy (ICP-AES) after four-acid digestion and shown in parts per million (ppm). (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex.)

Value	Definition
<1	Below detection limit of 1 ppm

Range of values
Minimum:	1
Maximum:	10000
Units:	ppm

Th

Thorium values acquired by analysis with inductively coupled plasma-atomic emission spectroscopy (ICP-AES) after four-acid digestion and shown in parts per million (ppm). (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex)

Value	Definition
<20	Below detection limit of 20 ppm

Range of values
Minimum:	20
Maximum:	10000
Units:	ppm

Ti

Titanium values acquired by analysis with inductively coupled plasma-atomic emission spectroscopy (ICP-AES) after four-acid digestion and shown in percent (%). Possibly incomplete digestion for this element, depending on mineralogy of sample, may result in lower analytical results. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex.)

Value	Definition
<0.01	Below detection limit of 0.01 %

Range of values
Minimum:	0.01
Maximum:	10
Units:	%

Tl

Thallium values acquired by analysis with inductively coupled plasma-atomic emission spectroscopy (ICP-AES) after four-acid digestion and shown in parts per million (ppm). (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex.)

Value	Definition
<10	Below detection limit of 10 ppm

Range of values
Minimum:	10
Maximum:	10000
Units:	ppm

U

Uranium values acquired by analysis with inductively coupled plasma-atomic emission spectroscopy (ICP-AES) after four-acid digestion and shown in parts per million (ppm). (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex.)

Value	Definition
<10	Below detection limit of 10 ppm

Range of values
Minimum:	10
Maximum:	10000
Units:	ppm

V

Vanadium values acquired by analysis with inductively coupled plasma-atomic emission spectroscopy (ICP-AES) after four-acid digestion and shown in parts per million (ppm). (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex.)

Value	Definition
<1	Below detection limit of 1 ppm

Range of values
Minimum:	1
Maximum:	10000
Units:	ppm

W

Tungsten values acquired by analysis with inductively coupled plasma-atomic emission spectroscopy (ICP-AES) after four-acid digestion and shown in parts per million (ppm). Possibly incomplete digestion for this element, depending on mineralogy of sample, may result in lower analytical results. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex.)

Value	Definition
<10	Below detection limit of 10 ppm

Range of values
Minimum:	10
Maximum:	10000
Units:	ppm

W (2)

Tungston values acquired by analysis with pressed pellet wavelength dispersive X-ray fluorescence (ppm). (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex.)

Value	Definition
<10	Below detection limit of 10 ppm
---	Null value; element not analyzed by this method

Range of values
Minimum:	10
Maximum:	10000
Units:	ppm

Zn

Zinc values acquired by analysis with inductively coupled plasma-atomic emission spectroscopy (ICP-AES) after four-acid digestion and shown in parts per million (ppm). (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex.)

Value	Definition
<2	Below detection limit of 2 ppm
>10000	Above upper detection limit of 10000 ppm

Range of values
Minimum:	2
Maximum:	10000
Units:	ppm

Zn(+)

Zinc values acquired by analysis with inductively coupled plasma-atomic emission spectroscopy (ICP-AES) after four-acid digestion and shown in weight percent (%). (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex.)

Value	Definition
---	Null value; element not analyzed by this method

Range of values
Minimum:	0.001
Maximum:	30
Units:	%

Table3.csv

Detection limits and geochemical methods for trace-element geochemical analyses of rock samples. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex)

Element

Chemical symbol of element analyzed (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex)

Formal codeset
Codeset Name:	Chemical symbol
Codeset Source:	Periodic Table of the Elements, National Institute of Standards and Technology NIST SP 966 (September 2003). * indicates possible incomplete digestion dependent on sample mineral matrices. (+) indicates over limit reanalysis. (2) indicates analysis for a given element by a second method. (3) indicates duplicate analysis due to inconsistent standard results.

Units

Chemical composition units (by weight) (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex)

Value	Definition
ppm	Parts per million
%	percent

Lower Detection Limit

The lowest concentration at which the element can be detected (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex)

Detection limit is a a number that is either the maximum or the minimum that a geochemical determination can be reliably made.

Upper Detection Limit

Value above which concentrations can not be accurately determined. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex)

Detection limit is a a number that is either the maximum or the minimum that a geochemical determination can be reliably made.

Chemex Code

Code used by ALS Chemex to indicate sample preparation procedure and analytical method. (Source: ALS Chemex)

Value	Definition
AU-ICP21	Fire assay-inductively coupled plasma-atomic emission spectroscopy.
PGM-ICP23	Fire assay-inductively coupled plasma-atomic emission spectroscopy.
AU-GRA21	Fire assay with a gravimetric determination.
ME-ICP61	Inductive coupled plasma-atomic emission spectroscopy after four acid digestion.
As-OG62	High grade, inductive coupled plasma-atomic emission spectroscopy after four acid digestion.
P-ICP61a	Inductive coupled plasma-atomic emission spectroscopy after four acid digestion.
ME-XRF05	Pressed pellet wavelength dispersive X-ray fluorescence.
ZN-OG62	High grade, inductive coupled plasma-atomic emission spectroscopy after four acid digestion.

Analytical Method

Instrumental method used by laboratory to determine concentration values. (Source: Alaska Division of Geological &Geophysical Surveys and ALS Chemex)

Value	Definition
FA-ICP-AES	Inductive coupled plasma-atomic emission spectroscopy following a 30g fire assay fusion.
ICP-AES	Inductive coupled plasma-atomic emission spectroscopy.
FA-GRAV	Fire assay with a gravimetric determination.
Pressed pellet-XRF	Pressed pellet X-ray fluoresence.

Digestion

Method used to get the sample into a form that is used by the analytical method to determine geochemical concentrations. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex)

Value	Definition
4 Acid	Four-acid, near-total digestion using HNO3-HClO4-HF + HCl.
FA	Fire assay fusion.
---	Digestion not applicable.

Table4.csv

Location and description of rocks collected for major-oxide, minor-oxide, and trace-element analyses in the in the Moran area, Tanana and Melozitna quadrangles, Alaska. (Source: Alaska Division of Geological & Geophysical Surveys)

Sample Number

Unique sample identifier (Source: Alaska Division of Geological & Geophysical Surveys)

Latitude

Latitude, NAD 27 (Source: Alaska Division of Geological & Geophysical Surveys)

Range of values
Minimum:	65.1803
Maximum:	65.5044
Units:	decimal degrees

Longitude

Longitude, NAD 27 (Source: Alaska Division of Geological & Geophysical Surveys)

Range of values
Minimum:	-153.8923
Maximum:	-152.4983
Units:	decimal degrees

UTM E

Easting for UTM zone 5, NAD 27 (Source: Alaska Division of Geological & Geophysical Surveys)

Range of values
Minimum:	458216
Maximum:	523259
Units:	meters

UTM N

Northing for UTM zone 5, NAD 27 (Source: Alaska Division of Geological & Geophysical Surveys)

Range of values
Minimum:	7228645
Maximum:	7264520
Units:	meters

Zone

UTM Zone (Source: Alaska Division of Geological & Geophysical Surveys)

05W is UTM zone for all samples in this data set

Description

First part of brief rock description (Source: Alaska Division of Geological & Geophysical Surveys)

Characters 1 to 255 of brief rock description

Description Extension 1

Extension of brief rock description for descriptions greater than 255 characters in length (Source: Alaska Division of Geological & Geophysical Surveys)

Characters 256 to 310 of brief rock description

Table5.csv

Major-oxide, minor-oxide, and trace element analyses for rocks collected in the Moran area, Tanana and Melozitna quadrangles, Alaska.. (Source: Alaska Division of Geological & Geophysical Surveys)

Sample

Unique sample identifier (Source: Alaska Division of Geological & Geophysical Surveys)

SiO2

SiO2 values acquired by analysis with lithium borate fusion and X-ray fluorescence spectrometry (LBF-XRF) and shown in percent. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex.)

Range of values
Minimum:	0.01
Maximum:	100
Units:	%

Al2O3

Al2O3 values acquired by analysis with lithium borate fusion and X-ray fluorescence spectrometry (LBF-XRF) and shown in percent. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex.)

Range of values
Minimum:	0.01
Maximum:	100
Units:	%

Fe2O3

Fe2O3 values acquired by analysis with lithium borate fusion and X-ray fluorescence spectrometry (LBF-XRF) and shown in percent. Total iron is expressed as Fe2O3. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex.)

Range of values
Minimum:	0.01
Maximum:	100
Units:	%

CaO

CaO values acquired by analysis with lithium borate fusion and X-ray fluorescence spectrometry (LBF-XRF) and shown in percent. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex.)

Value	Definition
<0.01	Below detection limit of 0.01 %

Range of values
Minimum:	0.01
Maximum:	100
Units:	%

MgO

MgO values acquired by analysis with lithium borate fusion and X-ray fluorescence spectrometry (LBF-XRF) and shown in percent. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex.)

Range of values
Minimum:	0.01
Maximum:	100
Units:	%

Na2O

Na2O values acquired by analysis with lithium borate fusion and X-ray fluorescence spectrometry (LBF-XRF) and shown in percent. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex.)

Range of values
Minimum:	0.01
Maximum:	100
Units:	%

K2O

K2O values acquired by analysis with lithium borate fusion and X-ray fluorescence spectrometry (LBF-XRF) and shown in percent. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex.)

Range of values
Minimum:	0.01
Maximum:	100
Units:	%

Cr2O3

Cr2O3 values acquired by analysis with lithium borate fusion and X-ray fluorescence spectrometry (LBF-XRF) and shown in percent. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex.)

Value	Definition
<0.01	Below detection limit of 0.01 %

Range of values
Minimum:	0.01
Maximum:	100
Units:	%

TiO2

TiO2 values acquired by analysis with lithium borate fusion and X-ray fluorescence spectrometry (LBF-XRF) and shown in percent. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex.)

Value	Definition
<0.01	Below detection limit of 0.01 %

Range of values
Minimum:	0.01
Maximum:	100
Units:	%

MnO

MnO values acquired by analysis with lithium borate fusion and X-ray fluorescence spectrometry (LBF-XRF) and shown in percent. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex.)

Value	Definition
<0.01	Below detection limit of 0.01 %

Range of values
Minimum:	0.01
Maximum:	100
Units:	%

P2O5

P2O5 values acquired by analysis with lithium borate fusion and X-ray fluorescence spectrometry (LBF-XRF) and shown in percent. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex.)

Range of values
Minimum:	0.01
Maximum:	100
Units:	%

SrO

SrO values acquired by analysis with lithium borate fusion and X-ray fluorescence spectrometry (LBF-XRF) and shown in percent. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex.)

Value	Definition
<0.01	Below detection limit of 0.01 %

Range of values
Minimum:	0.01
Maximum:	100
Units:	%

BaO

BaO values acquired by analysis with lithium borate fusion and X-ray fluorescence spectrometry (LBF-XRF) and shown in percent. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex.)

Value	Definition
<0.01	Below detection limit of 0.01 %

Range of values
Minimum:	0.01
Maximum:	100
Units:	%

LOI

Loss on ignition (LOI) values expressing loss of mass determined by gravimetric measurement after heating to 1000 degrees Celsius and shown in percent. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex.)

Range of values
Minimum:	0.01
Maximum:	100
Units:	%

Total

Calculated total for oxides in sample. Shown in percent. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex.)

Range of values
Minimum:	98.17
Maximum:	100.2
Units:	%

Ba

Barium values acquired by analysis with x-ray flourescence spectrometry (XRF) on a pressed-pellet and shown in parts per million (ppm). (Source: Alaska Division of Geological & Geophysical Surveys and University of Alaska Fairbanks Advanced Instrumentation Laboratory)

Value	Definition
---	Null value; element not analyzed by this method

Range of values
Minimum:	10
Maximum:	10000
Units:	ppm

Cr

Chromium values acquired by analysis with x-ray flourescence spectrometry (XRF)on a pressed-pellet and shown in parts per million (ppm). (Source: Alaska Division of Geological & Geophysical Surveys and University of Alaska Fairbanks Advanced Instrumentation Laboratory)

Value	Definition
---	Null value; element not analyzed by this method

Range of values
Minimum:	5
Maximum:	10000
Units:	ppm

Nb

Niobium values acquired by analysis with x-ray flourescence spectrometry (XRF) on a pressed-pellet and shown in parts per million (ppm). (Source: Alaska Division of Geological & Geophysical Surveys and University of Alaska Fairbanks Advanced Instrumentation Laboratory)

Value	Definition
< 2	Below detection limit of 2 ppm

Range of values
Minimum:	2
Maximum:	10000
Units:	ppm

Ni

Nickle values acquired by analysis with x-ray flourescence spectrometry (XRF) on a pressed-pelletand shown in parts per million (ppm). (Source: Alaska Division of Geological & Geophysical Surveys and University of Alaska Fairbanks Advanced Instrumentation Laboratory)

Value	Definition
< 10	Below detection limit of 10 ppm
---	Null value; element not analyzed by this method

Range of values
Minimum:	10
Maximum:	15000
Units:	ppm

Rb

Rubidium values acquired by analysis with x-ray flourescence spectrometry (XRF) on a pressed-pellet and shown in parts per million (ppm). (Source: Alaska Division of Geological & Geophysical Surveys and University of Alaska Fairbanks Advanced Instrumentation Laboratory)

Value	Definition
< 2	Below detection limit of 2 ppm

Range of values
Minimum:	2
Maximum:	10000
Units:	ppm

Sr

Strontium values acquired by analysis with x-ray flourescence spectrometry (XRF) on a pressed-pellet and shown in parts per million (ppm). (Source: Alaska Division of Geological & Geophysical Surveys and University of Alaska Fairbanks Advanced Instrumentation Laboratory)

Range of values
Minimum:	2
Maximum:	10000
Units:	ppm

Th

Thorium values acquired by analysis with x-ray flourescence spectrometry (XRF) on a pressed-pellet and shown in parts per million (ppm). (Source: Alaska Division of Geological & Geophysical Surveys and University of Alaska Fairbanks Advanced Instrumentation Laboratory)

Value	Definition
< 4	Below detection limit of 4 ppm
---	Null value; element not analyzed by this method

Range of values
Minimum:	4
Maximum:	10000
Units:	ppm

U

Uranium values acquired by analysis with x-ray flourescence spectrometry (XRF) on a pressed-pellet and shown in parts per million (ppm). (Source: Alaska Division of Geological & Geophysical Surveys and University of Alaska Fairbanks Advanced Instrumentation Laboratory)

Value	Definition
< 4	Below detection limit of 4 ppm
---	Null value; element not analyzed by this method

Range of values
Minimum:	4
Maximum:	10000
Units:	ppm

Y

Yttrium values acquired by analysis with x-ray flourescence spectrometry (XRF) on a pressed-pellet and shown in parts per million (ppm). (Source: Alaska Division of Geological & Geophysical Surveys and University of Alaska Fairbanks Advanced Instrumentation Laboratory)

Range of values
Minimum:	2
Maximum:	10000
Units:	ppm

Zr

Zirconium values acquired by analysis with x-ray flourescence spectrometry (XRF) on a pressed-pellet and shown in parts per million (ppm). (Source: Alaska Division of Geological & Geophysical Surveys and University of Alaska Fairbanks Advanced Instrumentation Laboratory)

Value	Definition
< 2	Below detection limit of 2 ppm

Range of values
Minimum:	2
Maximum:	10000
Units:	ppm

Table6.csv

Detection limits and geochemical methods for for major- and minor-oxide and trace metal analyses of whole-rock samples. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex)

Element

Chemical formula of element or oxide component analyzed (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex)

Value	Definition
Fe2O3	Total iron content calculated as ferric iron
LOI	Loss on ignition, difference after heating to 1000 degrees Celsius determined by gravimetric measurement
Total	Sum of the concentrations of all the oxides and LOI

Formal codeset
Codeset Name:	Major and minor oxide chemical formulas
Codeset Source:	Alaska Division of Geological & Geophysical Surveys and ALS Chemex

Formal codeset
Codeset Name:	Chemical symbol
Codeset Source:	Periodic Table of the Elements, National Institute of Standards and Technology NIST SP 966 (September 2003)

Units

Chemical composition units (by weight) (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex)

Value	Definition
%	percent
ppm	parts per million

Lower Detection Limit

The lowest concentration at which the element can be detected (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex)

Value	Definition
---	Detection limit not applicable.

Detection limit is a a number that is either the maximum or the minimum that a geochemical determination can be reliably made.

Upper Detection Limit

Value above which concentrations can not be accurately determined. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex)

Value	Definition
---	Detection limit not applicable.

Detection limit is a a number that is either the maximum or the minimumthat a geochemical determination can be reliably made.

Chemex Code

Code used by ALS Chemex to indicate sample preparation procedure and analytical method. (Source: ALS Chemex)

Value	Definition
ME-XRF06	Lithium borate fusion and X-ray fluorescence.
ME-XRF05	Pressed pellet wavelength dispersive X-ray fluorescence.
---	Chemex code not applicable.

Analytical Method

Instrumental method used by laboratory to determine concentration values. (Source: Alaska Division of Geological &Geophysical Surveys and ALS Chemex)

Value	Definition
LBF-XRF	lithium borate fusion and X-ray fluorescence spectrometry
Gravimetric	A value determined by gravimetric measurement
calculation	A value determined by computation
Pressed pellet-XRF	Pressed pellet X-ray fluoresence.

Table7.csv

Location, description, and analyses of rocks collected for non-carbonate carbon analyses in the Moran area, Tanana and Melozitna quadrangles, Alaska. (Source: Alaska Division of Geological & Geophysical Surveys)

Sample Number

Unique sample identifier (Source: Alaska Division of Geological & Geophysical Surveys)

Latitude

Latitude, NAD 27 (Source: Alaska Division of Geological & Geophysical Surveys)

Range of values
Minimum:	65.3369
Maximum:	65.3754
Units:	decimal degrees

Longitude

Longitude, NAD 27 (Source: Alaska Division of Geological & Geophysical Surveys)

Range of values
Minimum:	-152.7994
Maximum:	-152.4841
Units:	decimal degrees

UTM E

Easting for UTM zone 5, NAD 27 (Source: Alaska Division of Geological & Geophysical Surveys)

Range of values
Minimum:	509325
Maximum:	524021
Units:	meters

UTM N

Northing for UTM zone 5, NAD 27 (Source: Alaska Division of Geological & Geophysical Surveys)

Range of values
Minimum:	7245909
Maximum:	7250113
Units:	meters

Zone

UTM Zone (Source: Alaska Division of Geological & Geophysical Surveys)

05W is UTM zone for all samples in this data set

Description

Brief rock description (Source: Alaska Division of Geological & Geophysical Surveys)

Brief rock description

Non-carbonate Carbon (%)

Non-carbonate Carbon values acquired by analysis using induction furnace pyrolysis following dilute acid digestionand shown in percent. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Chemex.)

Range of values
Minimum:	0.01
Maximum:	50
Units:	%

Table8.csv

Major-oxide, minor-oxide, and trace-element analyses for rocks collected by DGGS in the Moran area, Tanana and Melozitna quadrangle, Alaska. Analyses were conducted on polished rock slabs. Because volatile components were not measured and rocks were of varying porosities, the analyses were normalized to 100 percent totals. (Source: Alaska Division of Geological & Geophysical Surveys)

Sample Number

Unique sample identifier (Source: Alaska Division of Geological & Geophysical Surveys)

Latitude

Latitude, NAD 27 (Source: Alaska Division of Geological & Geophysical Surveys)

Range of values
Minimum:	65.1736
Maximum:	65.5070
Units:	decimal degrees

Longitude

Longitude, NAD 27 (Source: Alaska Division of Geological & Geophysical Surveys)

Range of values
Minimum:	-154.5749
Maximum:	-152.0977
Units:	decimal degrees

UTM E

Easting for UTM zone 5, NAD 27 (Source: Alaska Division of Geological & Geophysical Surveys)

Range of values
Minimum:	426345
Maximum:	452272
Units:	meters

UTM N

Northing for UTM zone 5, NAD 27 (Source: Alaska Division of Geological & Geophysical Surveys)

Range of values
Minimum:	7264778
Maximum:	7227911
Units:	meters

Zone

UTM Zone (Source: Alaska Division of Geological & Geophysical Surveys)

05N is the UTM zone for all samples in this data set

Root Name

Lithology derived from geochemical data and rock textures in hand sample. (Source: Alaska Division of Geological & Geophysical Surveys)

Value	Definition
pending	Incomplete analyses. These data will appear in a revised geochemical report when they are complete and have been quality checked.

Lithology

Comments

Analyses were conducted on polished rock slabs, except for sample 2009LF93F, which was made into a pressed pellet. The quality of the pressed pellet analysis is higher than any polished slab analysis. Remarks in the Comments column such as "small," "porous," or "altered" indicate that the quality of the analysis is lower than average/normal. (Source: Alaska Division of Geological & Geophysical Surveys)

Value	Definition
altered	Polished slab is made from an altered rock.
small (27 mm)	Polished slab is smaller than the 37-mm-diameter sample holder; a 27-mm-diameter sample holder was used instead
pending	Incomplete analyses. These data will appear in a revised geochemical report when they are complete and have been quality checked.
---	Null value; sample quality is average/normal.

SiO2

SiO2 values acquired by X-ray fluorescence spectrometry (XRF) and shown in percent. (Source: Alaska Division of Geological & Geophysical Surveys and the University of Alaska Fairbanks.)

Value	Definition
pending	Incomplete analyses. These data will appear in a revised geochemical report when they are complete and have been quality checked.

Range of values
Minimum:	0.1
Maximum:	100
Units:	%

Al2O3

Al2O3 values acquired by X-ray fluorescence spectrometry (XRF) and shown in percent. (Source: Alaska Division of Geological & Geophysical Surveys and the University of Alaska Fairbanks.)

Value	Definition
pending	Incomplete analyses. These data will appear in a revised geochemical report when they are complete and have been quality checked.

Range of values
Minimum:	0.1
Maximum:	100
Units:	%

BaO

BaO values acquired by X-ray fluorescence spectrometry (XRF) and shown in percent. (Source: Alaska Division of Geological & Geophysical Surveys and the University of Alaska Fairbanks.)

Value	Definition
pending	Incomplete analyses. These data will appear in a revised geochemical report when they are complete and have been quality checked.
---	Null value; no BaO detected.

Range of values
Minimum:	0.02
Maximum:	100
Units:	%

CaO

CaO values acquired by X-ray fluorescence spectrometry (XRF) and shown in percent. (Source: Alaska Division of Geological & Geophysical Surveys and the University of Alaska Fairbanks.)

Value	Definition
pending	Incomplete analyses. These data will appear in a revised geochemical report when they are complete and have been quality checked.

Range of values
Minimum:	0.05
Maximum:	100
Units:	%

Fe2O3

Fe2O3 values acquired by X-ray fluorescence spectrometry (XRF) and shown in percent. Total iron is expressed as Fe2O3. (Source: Alaska Division of Geological & Geophysical Surveys and the University of Alaska Fairbanks.)

Value	Definition
pending	Incomplete analyses. These data will appear in a revised geochemical report when they are complete and have been quality checked.

Range of values
Minimum:	0.05
Maximum:	100
Units:	%

K2O

K2O values acquired by X-ray fluorescence spectrometry (XRF) and shown in percent. (Source: Alaska Division of Geological & Geophysical Surveys and the University of Alaska Fairbanks.)

Value	Definition
pending	Incomplete analyses. These data will appear in a revised geochemical report when they are complete and have been quality checked.

Range of values
Minimum:	0.05
Maximum:	100
Units:	%

MgO

MgO values acquired by X-ray fluorescence spectrometry (XRF) and shown in percent. (Source: Alaska Division of Geological & Geophysical Surveys and the University of Alaska Fairbanks.)

Value	Definition
pending	Incomplete analyses. These data will appear in a revised geochemical report when they are complete and have been quality checked.

Range of values
Minimum:	0.1
Maximum:	100
Units:	%

MnO

MnO values acquired by X-ray fluorescence spectrometry (XRF) and shown in percent. (Source: Alaska Division of Geological & Geophysical Surveys and the University of Alaska Fairbanks.)

Value	Definition
pending	Incomplete analyses. These data will appear in a revised geochemical report when they are complete and have been quality checked.

Range of values
Minimum:	0.02
Maximum:	100
Units:	%

Na2O

Na2O values acquired by X-ray fluorescence spectrometry (XRF) and shown in percent. (Source: Alaska Division of Geological & Geophysical Surveys and the University of Alaska Fairbanks.)

Value	Definition
pending	Incomplete analyses. These data will appear in a revised geochemical report when they are complete and have been quality checked.

Range of values
Minimum:	0.1
Maximum:	100
Units:	%

P2O5

P2O5 values acquired by acquired by X-ray fluorescence spectrometry (XRF) and shown in percent. (Source: Alaska Division of Geological & Geophysical Surveys and the University of Alaska Fairbanks.)

Value	Definition
pending	Incomplete analyses. These data will appear in a revised geochemical report when they are complete and have been quality checked.

Range of values
Minimum:	0.05
Maximum:	100
Units:	%

TiO2

TiO2 values acquired by X-ray fluorescence spectrometry (XRF) and shown in percent. (Source: Alaska Division of Geological & Geophysical Surveys and the University of Alaska Fairbanks.)

Value	Definition
pending	Incomplete analyses. These data will appear in a revised geochemical report when they are complete and have been quality checked.

Range of values
Minimum:	0.02
Maximum:	100
Units:	%

CO2

CO2 values acquired by X-ray fluorescence spectrometry (XRF) and shown in percent. (Source: Alaska Division of Geological & Geophysical Surveys and the University of Alaska Fairbanks.)

Value	Definition
pending	Incomplete analyses. These data will appear in a revised geochemical report when they are complete and have been quality checked.
---	Null value; no carbonate detected.

Range of values
Minimum:	0.02
Maximum:	100
Units:	%

Total

Sum of oxides; oxides are normalized to 100 percent. (Source: Alaska Division of Geological & Geophysical Surveys and the University of Alaska Fairbanks.)

Range of values
Minimum:	.0001
Maximum:	100.0300
Units:	%

As

Arsenic values acquired by X-ray fluorescence spectrometry (XRF) and shown in parts per million (ppm). (Source: Alaska Division of Geological & Geophysical Surveys and the University of Alaska Fairbanks.)

Value	Definition
pending	Incomplete analyses. These data will appear in a revised geochemical report when they are complete and have been quality checked.
---	Null value; no arsenic detected.

Range of values
Minimum:	5
Maximum:	10000
Units:	ppm

Br

Bromine values acquired by X-ray fluorescence spectrometry (XRF) and shown in ppm. (Source: Alaska Division of Geological & Geophysical Surveys and the University of Alaska Fairbanks.)

Value	Definition
pending	Incomplete analyses. These data will appear in a revised geochemical report when they are complete and have been quality checked.
---	Null value; no bromine detected.

Range of values
Minimum:	0.02
Maximum:	100
Units:	%

Ce

Cerium values acquired by X-ray fluorescence spectrometry (XRF) and shown in parts per million (ppm). (Source: Alaska Division of Geological & Geophysical Surveys and the University of Alaska Fairbanks.)

Value	Definition
pending	Incomplete analyses. These data will appear in a revised geochemical report when they are complete and have been quality checked.
---	Null value; no cerium detected.

Range of values
Minimum:	5
Maximum:	10000
Units:	ppm

Cl

Chlorine values acquired by X-ray fluorescence spectrometry (XRF) and shown in parts per million (ppm). (Source: Alaska Division of Geological & Geophysical Surveys and the University of Alaska Fairbanks.)

Value	Definition
pending	Incomplete analyses. These data will appear in a revised geochemical report when they are complete and have been quality checked.
---	Null value; no chlorine detected.

Range of values
Minimum:	5
Maximum:	10000
Units:	ppm

Co

Cobalt values acquired by X-ray fluorescence spectrometry (XRF) and shown in parts per million (ppm). (Source: Alaska Division of Geological & Geophysical Surveys and the University of Alaska Fairbanks.)

Value	Definition
pending	Incomplete analyses. These data will appear in a revised geochemical report when they are complete and have been quality checked.
---	Null value; no cobalt detected.

Range of values
Minimum:	5
Maximum:	10000
Units:	ppm

Cr

Chromium values acquired by X-ray fluorescence spectrometry (XRF) and shown in parts per million (ppm). (Source: Alaska Division of Geological & Geophysical Surveys and the University of Alaska Fairbanks.)

Value	Definition
pending	Incomplete analyses. These data will appear in a revised geochemical report when they are complete and have been quality checked.
---	Null value; no chromium detected.

Range of values
Minimum:	5
Maximum:	10000
Units:	ppm

Cu

Copper values acquired by X-ray fluorescence spectrometry (XRF) and shown in parts per million (ppm). (Source: Alaska Division of Geological & Geophysical Surveys and the University of Alaska Fairbanks.)

Value	Definition
pending	Incomplete analyses. These data will appear in a revised geochemical report when they are complete and have been quality checked.
---	Null value; no copper detected.

Range of values
Minimum:	5
Maximum:	10000
Units:	ppm

F

Fluorine values acquired by X-ray fluorescence spectrometry (XRF) and shown in parts per million (ppm). (Source: Alaska Division of Geological & Geophysical Surveys and the University of Alaska Fairbanks.)

Value	Definition
pending	Incomplete analyses. These data will appear in a revised geochemical report when they are complete and have been quality checked.
---	Null value; no fluorine detected.
---	Null value; no fluorine detected.

Range of values
Minimum:	5
Maximum:	10000
Units:	ppm

Nb

Niobium values acquired by X-ray fluorescence spectrometry (XRF) and shown in parts per million (ppm). (Source: Alaska Division of Geological & Geophysical Surveys and the University of Alaska Fairbanks.)

Value	Definition
pending	Incomplete analyses. These data will appear in a revised geochemical report when they are complete and have been quality checked.
---	Null value; no niobium detected.

Range of values
Minimum:	5
Maximum:	10000
Units:	ppm

Ni

Nickle values acquired by X-ray fluorescence spectrometry (XRF) and shown in parts per million (ppm). (Source: Alaska Division of Geological & Geophysical Surveys and the University of Alaska Fairbanks.)

Value	Definition
pending	Incomplete analyses. These data will appear in a revised geochemical report when they are complete and have been quality checked.
---	Null value; no nickle detected.

Range of values
Minimum:	5
Maximum:	10000
Units:	ppm

Pb

Lead values acquired by X-ray fluorescence spectrometry (XRF) and shown in parts per million (ppm). (Source: Alaska Division of Geological & Geophysical Surveys and the University of Alaska Fairbanks.)

Value	Definition
pending	Incomplete analyses. These data will appear in a revised geochemical report when they are complete and have been quality checked.
---	Null value; no lead detected.

Range of values
Minimum:	5
Maximum:	10000
Units:	ppm

Rb

Rubidium values acquired by X-ray fluorescence spectrometry (XRF) and shown in parts per million (ppm). (Source: Alaska Division of Geological & Geophysical Surveys and the University of Alaska Fairbanks.)

Value	Definition
pending	Incomplete analyses. These data will appear in a revised geochemical report when they are complete and have been quality checked.
---	Null value; no rubidium detected.

Range of values
Minimum:	5
Maximum:	10000
Units:	ppm

S

Sulfur values acquired by X-ray fluorescence spectrometry (XRF) and shown in parts per million (ppm). (Source: Alaska Division of Geological & Geophysical Surveys and the University of Alaska Fairbanks.)

Value	Definition
pending	Incomplete analyses. These data will appear in a revised geochemical report when they are complete and have been quality checked.
---	Null value; no sulfur detected.

Range of values
Minimum:	5
Maximum:	10000
Units:	ppm

Sr

Strontium values acquired by X-ray fluorescence spectrometry (XRF) and shown in parts per million (ppm). (Source: Alaska Division of Geological & Geophysical Surveys and the University of Alaska Fairbanks.)

Value	Definition
pending	Incomplete analyses. These data will appear in a revised geochemical report when they are complete and have been quality checked.
---	Null value; no strontium detected.

Range of values
Minimum:	2
Maximum:	1000
Units:	ppm

V

Vanadium values acquired by X-ray fluorescence spectrometry (XRF) and shown in parts per million (ppm). (Source: Alaska Division of Geological & Geophysical Surveys and the University of Alaska Fairbanks.)

Value	Definition
pending	Incomplete analyses. These data will appear in a revised geochemical report when they are complete and have been quality checked.

Range of values
Minimum:	5
Maximum:	10000
Units:	ppm

Y

Yttrium values acquired by X-ray fluorescence spectrometry (XRF) and shown in parts per million (ppm). (Source: Alaska Division of Geological & Geophysical Surveys and the University of Alaska Fairbanks.)

Value	Definition
pending	Incomplete analyses. These data will appear in a revised geochemical report when they are complete and have been quality checked.
---	Null value; no yttrium detected.

Range of values
Minimum:	5
Maximum:	10000
Units:	ppm

Zn

Zinc values acquired by X-ray fluorescence spectrometry (XRF) and shown in parts per million (ppm). (Source: Alaska Division of Geological & Geophysical Surveys and the University of Alaska Fairbanks.)

Value	Definition
pending	Incomplete analyses. These data will appear in a revised geochemical report when they are complete and have been quality checked.
---	Null value; no rubidium detected.

Range of values
Minimum:	5
Maximum:	10000
Units:	ppm

Zr

Zirconium values acquired by X-ray fluorescence spectrometry (XRF) and shown in parts per million (ppm). (Source: Alaska Division of Geological & Geophysical Surveys and the University of Alaska Fairbanks.)

Value	Definition
pending	Incomplete analyses. These data will appear in a revised geochemical report when they are complete and have been quality checked.
---	Null value; no zirconium detected.

Range of values
Minimum:	10
Maximum:	1000
Units:	ppm

Rb (2)

Value	Definition
pending	Incomplete analyses. These data will appear in a revised geochemical report when they are complete and have been quality checked.
---	Null value; no rubidium detected.

Range of values
Minimum:	5
Maximum:	10000
Units:	ppm

Sr (2)

Value	Definition
pending	Incomplete analyses. These data will appear in a revised geochemical report when they are complete and have been quality checked.
---	Null value; no strontium detected.

Range of values
Minimum:	5
Maximum:	10000
Units:	ppm

Y (2)

Value	Definition
pending	Incomplete analyses. These data will appear in a revised geochemical report when they are complete and have been quality checked.
---	Null value; no yttrium detected.

Range of values
Minimum:	5
Maximum:	10000
Units:	ppm

Zr (2)

Value	Definition
pending	Incomplete analyses. These data will appear in a revised geochemical report when they are complete and have been quality checked.
---	Null value; no zirconium detected.

Range of values
Minimum:	1
Maximum:	1000
Units:	ppm

Nb (2)

Value	Definition
pending	Incomplete analyses. These data will appear in a revised geochemical report when they are complete and have been quality checked.
---	Null value; no niobium detected.

Range of values
Minimum:	5
Maximum:	10000
Units:	ppm

Table9.csv

Detection limits and geochemical methods for for major- and minor-oxide, minoe-oxide, and and trace-element analyses of of polished rock slab samples. (Source: Alaska Division of Geological & Geophysical Surveys and the University of Alaska Fairbanks.)

Element

Chemical formula of element or oxide component analyzed (Source: Alaska Division of Geological & Geophysical Surveys and the University of Alaska Fairbanks.)

Major and minor oxide chemical formulas, Generic example of element identifier: AA (2): AA=chemical symbol of element as defined by the Periodic Table of the Elements, National Institute of Standards and Technology NIST SP 966 (September 2003), (2) indicates duplicate value. Fe2O3 = Total iron content calculated as ferric iron,"Total" = Sum of the concentrations of all the oxides

Units

Chemical composition units (Source: Alaska Division of Geological & Geophysical Surveys and the University of Alaska Fairbanks.)

Value	Definition
%	percent
ppm	parts per million

Lower Detection Limit

The lowest concentration at which the element can be detected (Source: Alaska Division of Geological & Geophysical Surveys and the University of Alaska Fairbanks.)

Value	Definition
Pending	Incomplete detection limit calculation. Detection limits will appear in a revised geochemical report when they are complete and have been quality checked.
---	Detection limit not applicable.

Upper Detection Limit

Value above which concentrations can not be accurately determined. (Source: Alaska Division of Geological & Geophysical Surveys and the University of Alaska Fairbanks.)

Value	Definition
Pending	Incomplete detection limit calculation. Detection limits will appear in a revised geochemical report when they are complete and have been quality checked.
---	Detection limit not applicable.

Analytical Method

Instrumental method used by laboratory to determine concentration values. (Source: Alaska Division of Geological & Geophysical Surveys and the University of Alaska Fairbanks.)

Value	Definition
XRF	X-ray fluorescence spectrometry
Calculation	Sum of normalized oxides (LOI was not measured)

Who produced the data set?

Who are the originators of the data set? (may include formal authors, digital compilers, and editors)
- Lough, T.A.
- Freeman, L.K.
- Elliot, B.A.
- Griesel, G.A.
- Newberry, R.J.
- Szumigala, D.J.
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 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 U.S. Geological Survey STATEMAP Program under award number G11AC20203 and the Alaska State General Fund.
To whom should users address questions about the data?

Why was the data set created?

The analyses in this report were acquired as part of a geologic mapping program, the purpose of which is to provide 1:63,360-scale geologic mapping of the Moran airborne geophysical survey released by DGGS in 2010 (Burns et al., 2010). The geophysical survey (helicopter-based aeromagnetic and electromagnetic data) and geologic mapping are part of the Alaska Airborne Geophysical/Geological Mineral Inventory Program, a special multi-year investment by the State of Alaska to expand Alaska's geologic and mineral resources knowledge base, catalyze future private-sector mineral exploration and development, and guide state resource development planning.

How was the data set created?

From what previous works were the data drawn?
How were the data generated, processed, and modified?

Date: Jul-2011 (process 1 of 9)
Fieldwork - Rock samples of visibly mineralized rock, or rock exhibiting features associated with mineralization, were preferentially collected and analyzed for geochemical trace elements. Spatially these rocks were collected randomly. Occasionally rocks exhibiting a specifc feature were selectively collected and these instances were noted in the sample description.

Date: Jul-2011 (process 2 of 9)
Fieldwork - Samples for whole rock analyses (major-oxide, minor-oxide, and trace element analyses) were collected to determine 1) bulk rock composition of igneous and metaigneous lithologies, or 2) the tectonic setting of a sampleâ€™s protolith based on petrogenetically important trace elements. Unweathered or minimally weathered rock samples were preferentially selected for analysis. Spatially these rocks were collected randomly.

Date: Jul-2011 (process 3 of 9)
Fieldwork - Rock samples of visibly carbonaceous or graphitic metamorphic rock were preferentially collected and analyzed for non-carbonate carbon content. Spatially these rocks were collected randomly. Unweathered or minimally weathered rock samples were preferentially selected for analysis.

Date: Sep-2011 (process 4 of 9)
Sample Preparation - All sample preparation was conducted at the ALS Chemex sample preparation facility in Fairbanks, Alaska, except for preparation of whole-rock samples. Preparation of whole-rock samples was conducted at the University of Alaska Fairbanks. Rocks intended for whole-rock analysis by ALS Chemex and those with a weathering rind were trimmed at DGGS with a tile saw prior to sample preparation at the laboratory. Rock samples were crushed with a Terminator oscillating jaw crusher with chrome steel alloy plates so that at least 70 percent of the material passed through a -10 mesh (2 mm) screen. Representative aliquots of 250 grams each were taken using a stainless steel riffle splitter. These samples were then pulverized in an Essa ring mill bowl and pucks made of Essaâ€™s Standard Steel alloy so that 85 percent of the sample passed through a -200 mesh (75 micron) screen. Trace-element analyses, whole-rock oxide analyses, and gold analyses were performed using representative splits of each 250 gram pulp. Samples for whole-rock analyses at the University of Alaska Fairbanks were cut into slabs at the Univeristy of Alaska Fairbanks or DGGS using a tile saw, and polished at the University of Alaska Fairbanks.

Date: Aug-2011 (process 5 of 9)
Analysis - All potentially mineralized samples were assayed for gold by inductive coupled plasma-atomic emission spectroscopy following a 30g fire assay fusion (FA-ICP-AES). Platinum and palladium were assayed for selected samples by FA-ICP-AES. Trace-element geochemical analyses were performed by inductive coupled plasma-atomic emission spectroscopy (ICP-AES) methods after four-acid, near-total digestion. This method of digestion is possibly incomplete for some elements and may result in lower analytical results for these elements.Analytical methods, lower and upper reporting limits, and the elements that may be affected by incomplete digestion are tabulated in table 3. Rock samples with trace metal values above the detection limit in the initial trace element geochemical analysis were reanalyzed for those metals by the following methods: gold, fire assay with a gravimetric finish using a 30g sub-sample (FA-GRAV); Posphorus, byICP-AES methods after four-acid, near-total digestion; and arsenic and/or zinc by high-grade ICP-AES methods after four-acid, near-total digestion. Results and detection limits for the reanalysis of gold, arsenic, and zinc are listed in tables 2 and 3 respectively.

Date: Sep-2011 (process 6 of 9)
Analysis - Major and minor-element oxides were determined at ALS by X-ray fluorescence spectrometry following a lithium borate fusion (LBM-XRF). Trace element values for Ba, Cr, Nb, Ni, Rb, Sr, Th, U, Y, and Zr were determined by XRF on a pressed pellet.Analytical methods and detection limits are tabulated in Table 6

Date: Aug-2011 (process 7 of 9)
Analysis - Non-carbonate carbon analyses were performed by ALS. Non-carbonate carbon content was determined using a LECO furnace after a dilute acid digestion. The lower detection limit for non-carbonate carbon is 0.01 percent, and the upper detection limit is 50.00 percent.

Date: Sep-2011 (process 8 of 9)
Analysis - XRF spectroscopic analyses performed at UAF were standardized using well-characterized natural fine-grained rock and pure mineral standards as well as conventional pressed pellets of international rock standards. Because volatile components were not 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 (trace elements) and fused disk (major and minor oxides) techniques indicates that major- and minor-oxide and trace-element concentrations are most likely within 10 percent of the â€˜trueâ€™ concentrations. Analytical methods and detection limits are tabulated in Table 9.

Date: Oct-2011 (process 9 of 9)
Other - Latitude and Longitude values in Tables 1,4,7 and 8 were converted from UTM values with the "project" tool in the "data management" toolbox in ArcGIS Desktop 10.0 using ArcMap 10.0.
What similar or related data should the user be aware of?
Burns, L.E., Fugro Airborne Surveys Corp., and Stevens Exploration Management Corp., 2010, Line, grid, and vector data, and maps for the airborne geophysical survey of the Moran Survey Area, Melozitna and Tanana quadrangles, central Alaska: Alaska Division of Geological & Geophysical Surveys Geophysical Report GPR 2010-1, Alaska Division of Geological & Geophysical Surveys, Fairbanks, AK.
Online Links:
- <http://dx.doi.org/10.14509/20561>
Other_Citation_Details:
2 linedata files, 19 grids, 20 GeoTIFFs and Google Earth KMZ files, 15 vector files, and 28 maps (56 sheets total)

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

How well have the observations been checked?
All major-oxide, minor-oxide, and trace-element geochemical analyses were performed by ALS Chemex, except for those performed on polished rock slabs by the University of Alaska Fairbanks (UAF). Analytical methods and detection limits are listed in tables 3, 6, 7, and 9. This information is also described in the report text. Aside from ALS Chemexâ€™s own internal quality control program, DGGS monitored analysis quality by inserting a sample of known composition into the sample roster for every batch of 20 samples. The analytical results were statistically compared to similar standard compositions for the past ~10 years. AlS Chemex results for one DGGS standard sample differed from its known composition by more than one standard deviation; mineralized samples in the same 20-sample batch were re-run for gold. These samples are listed in table 2. Analyses performed at UAF were standardized using well-characterized, natural, fine-grained rock and pure mineral standards as well as conventional pressed pellets of international rock standards.
How accurate are the geographic locations?
Location data were downloaded from Garmin eTrex Legend HCx GPS units into an Access database.
How accurate are the heights or depths?
Where are the gaps in the data? What is missing?
This dataset contains all of the analyses for trace-element geochemistry, whole rock (major- and minor-oxide, and trace element) geochemistry, and non-carbonate-carbon analyses for rock samples collected by DGGS in the Moran area project in 2011. Due to complications at the ALS Chemex and UAF laboratories, this data release is incomplete. Omitted sampels are noted in tables 2, 8 and 9 as "pending."We expect to release a revised report when these analyses are complete and have been quality checked.
How consistent are the relationships among the observations, including topology?
No topologic relationships are present in data.

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 are 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. 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.

Who distributes the data set? (Distributor 1 of 1)

State of Alaska, Department of Natural Resources, 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 web site (<http://www.dggs.alaska.gov>) for the latest information on available data. Please contact us using the e-mail address provided above when possible.
What's the catalog number I need to order this data set?
What legal disclaimers am I supposed to read?

The State of Alaska makes no express or implied warranties (including warranties of merchantability and fitness) with respect to the character, function, or capabilities of the electronic services 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, any failure thereof, or otherwise, and in no event will the State of Alaska's liability to the requester or anyone else exceed the fee paid for the electronic service or product.
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.Turn around 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 ammount.
- Cost to order the data: <http://dx.doi.org/10.14509/23002>
- Availability in digital form:
  
  Data format: CSV
  
  Network links: <http://dx.doi.org/10.14509/23002>
- Cost to order the data: Free download

Who wrote the metadata?

Dates:

Last modified: 04-Oct-2010

Metadata author:

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>

Generated by mp version 2.9.6 on Thu Nov 10 09:36:46 2011

Data format:	CSV
Network links:	<http://dx.doi.org/10.14509/23002>