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Mineralogy and geochemistry of a uraniferous coal from the Red Desert Area, Sweetwater County, Wyoming

Trace Elements Investigations 389

This report concerns work done on behalf of the Division of Raw Materials of the U.S. Atomic Energy Commission
By:
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DOI: 10.3133/tei389

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Abstract

A sample of subbituminous uraniferous coal from the Red Desert, Sweetwater County, Wyo., was studied mineralogically. The coal contains gypsum (6 percent), kaolinite (1 percent), quartz (0.3 percent), calcite (trace), and limonite (trace). This suite of minerals and the absence of pyrite show that the coal has been subjected to weathering and oxidation. No uranium minerals have been found; mechanical fractionation has indicated that the uranium is associated with the organic constituents of the coal. The minerals that have been isolated contain 0.0006 percent uranium, a content which is to be expected for nonuraniferous sedimentary rocks. The organic components of the coal contain approximately 0.002 percent uranium. On the basis of material balance calculations, the organic components carry 98 percent of the uranium in the coal.


Fischer assays of this weathered coal from the Red Desert indicate a yield of 16.7 gallons of tar per ton on low-temperature retorting. In view of the large reserve of subbituminous coal in the Red Desert, its probable ease of mining, and its tar yield, it may be desirable to carry out further evaluation of the coal as a fuel or raw material for the manufacture of tar or chemicals. If economic factors permit utilization of the coal, the uranium, although present in small percentages, could be recovered as a byproduct.

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Additional Publication Details

Publication type:
Report
Publication Subtype:
USGS Numbered Series
Title:
Mineralogy and geochemistry of a uraniferous coal from the Red Desert Area, Sweetwater County, Wyoming
Series title:
Trace Elements Investigations
Series number:
389
DOI:
10.3133/tei389
Year Published:
1953
Language:
English
Publisher:
U.S. Geological Survey
Description:
19 p.
Number of Pages:
20
Country:
United States
State:
Wyoming
County:
Sweetwater County
Other Geospatial:
Red Desert