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##### U.S. Geological Survey   Open-File Report 2006-1070  Version 1.1

# Major- and Trace-Element Concentrations in Rock Samples Collected in 2004 from the Taylor Mountains 1:250,000-scale Quadrangle, Alaska

#### *By* Edward P. Klimasauskas, Marti L. Miller, Dwight C. Bradley, Sue M. Karl, James F. Baichtal, and Robert B. Blodgett

#### 2006

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| The Kuskokwim mineral belt of Bundtzen and Miller (1997) forms an important metallogenic region in southwestern Alaska that has yielded more than 3.22 million ounces of gold and 400,000 ounces of silver. Precious-metal and related deposits in this region associated with Late Cretaceous to early Tertiary igneous complexes extend into the Taylor Mountains 1:250,000-scale quadrangle. The U.S. Geological Survey is conducting geologic mapping and a mineral resource assessment of this area that will provide a better understanding of the geologic framework, regional geochemistry, and may provide targets for mineral exploration and development. During the 2004 field season 137 rock samples were collected for a variety of purposes. The 4 digital files accompanying this report reflect the type of analysis performed and its intended purpose and are available for download as an Excel workbook, comma delimited format (*.csv), dBase 4 files (*.dbf) or as point coverages in ArcInfo interchange format (*.e00). Data values are provided in percent, pct (1gram per 100grams), or parts per million, ppm (1gram per 1,000,000grams) per the column heading in the table. All samples were analyzed for a suite of 42 trace-elements (icp42.*) to provide data for use in geochemical exploration as well as some baseline data. Selected samples were analyzed by additional methods; 104 targeted geochemical exploration samples were analyzed for gold, arsenic, and mercury (auashg.*); all of these samples were further analyzed to obtain concentrations of 10 loosely bound metals (icp10.*); 33 rock samples were analyzed for major element oxides to support the regional mapping program (reg.*), of which 28 sedimentary rock samples were also analyzed for total carbon, and carbonate carbon. |
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##### Also of interest

USGS Open-File Report 2006-1175 Aqueous Geochemical Data from the Analysis of Stream Water Samples Collected in August 2004—Taylor Mountains 1:250,000 Scale Quadrangle, Alaska, by Bronwen Wang, Seth Mueller, Elizabeth Bailey, and Greg Lee.

USGS Open-File Report 2006-1306 Major- and Trace-Element Concentrations in Rock Samples Collected in 2005 from the Taylor Mountains 1:250,000-scale Quadrangle, Alaska, by Edward P. Klimasauskas, Marti L. Miller, Dwight C. Bradley, Tom K. Bundtzen, and Travis L. Hudson.

USGS Open-File Report 2006-1361 Aqueous Geochemical Data From the Analysis of Stream-Water Samples Collected in June and July 2005—Taylor Mountains 1:250,000 Scale Quadrangle, Alaska, by Bronwen Wang, Seth Mueller, Sarah Stetson, Elizabeth Bailey, and Greg Lee.

For questions about the content of this report, contact Ed Klimasauskas

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