About Us
Alaska relies on the Alaska Division of Geological & Geophysical Surveys to collect and distribute information about the state's geologic resources and hazards. Our geologists and support staff are leaders in researching Alaska's geology and implementing technological tools to most efficiently collect, interpret, publish, archive, and disseminate that information to the public
http://www.dggs.alaska.gov/
dggspubs@alaska.gov
Location
3354 College Road
Fairbanks
, AK
99709
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Initially, all samples were assayed for gold by Atomic Absorption Spectroscopy following a fire assay fusion. Samples containing greater than 10,000 ppb gold were also assayed by Gravimetric finish following a fire assay fusion. All samples were assayed for mercury by Inductively Coupled Plasma - Atomic Emission Spectroscopy after Aqua Regia digestion and by Atomic Absorption Spectroscopy after Aqua Regia digestion/Cold Vapor. High-grade copper samples were assayed by AAS. All other trace element geochemical analyses were performed by Inductively Coupled Plasma - Atomic Emission Spectroscopy methods following Aqua Regia digestion. This method of digestion is possibly incomplete for some elements and may result in...
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36 rock samples were analyzed for major and minor oxides using X-ray Fluorescence Spectrometry following a lithium metaborate fusion. 36 rock samples were analyzed for trace elements using Inductively Coupled Plasma - Mass Spectroscopy after lithium metaborate fusion. Provenance: Loaded from XML file on Thu Sep 25 12:44:28 MDT 2008 Supplemental Information: Analysis data can be queryed at http://www.dggs.dnr.state.ak.us/webgeochem The source citation of this geochemical analysis is located at http://www.dggs.dnr.state.ak.us/pubs/pubs?reqtype=citation&ID=7130 Alternate Geometry: The coordinates are represented in North American Datum of 1927 Dataset Reference Date: 10330-01-01 00:00:00.0
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The trace element analyses were conducted using wavelength-dispersive X-ray fluorescence spectrometry on pressed pellets using standard Norrish and Hutton (1969) procedures as described in Potts (1987) and as used by Cameron (2000). Well-calibrated international standards were used as a check of the analyses. The routine was customized for inter-elemental X-ray interferences in rocks of basaltic and felsic compositions. By comparing results on well-characterized rock standards, DGGS found in 2006 that the UAF routines yield more accurate trace-element results and in 2007 we chose to perform the Nb, Rb, Sr, Y, and Zr analyses using this procedure. Provenance: Loaded from XML file on Thu Sep 25 12:44:51 MDT 2008 Supplemental...
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34 samples were analyzed for major and minor oxides using X-ray fluorescence spectrometry following a lithium metaborate fusion. Analysis of trace elements (Nb, Rb, Sr, Y, and Zr) were performed using wavelength-dispersive X-ray fluorescence spectrometry on pressed pellets. Provenance: Loaded from XML file on Thu Sep 25 12:44:47 MDT 2008 Supplemental Information: Analysis data can be queryed at http://www.dggs.dnr.state.ak.us/webgeochem The source citation of this geochemical analysis is located at http://www.dggs.dnr.state.ak.us/pubs/pubs?reqtype=citation&ID=16021 Alternate Geometry: The coordinates are represented in North American Datum of 1927 Dataset Reference Date: 10330-01-01 00:00:00.0
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34 samples were analyzed for major and minor oxides using X-ray fluorescence spectrometry following a lithium metaborate fusion. Analysis of trace elements (Nb, Rb, Sr, Y, and Zr) were performed using wavelength-dispersive X-ray fluorescence spectrometry on pressed pellets. Provenance: Loaded from XML file on Thu Sep 25 12:44:49 MDT 2008 Supplemental Information: Analysis data can be queryed at http://www.dggs.dnr.state.ak.us/webgeochem The source citation of this geochemical analysis is located at http://www.dggs.dnr.state.ak.us/pubs/pubs?reqtype=citation&ID=16021 Alternate Geometry: The coordinates are represented in North American Datum of 1927 Dataset Reference Date: 10330-01-01 00:00:00.0
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