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Geology of carnotite-bearing sandstone in the Uravan and Gateway districts, Montrose and Mesa counties, Colorado, and Grand County, Utah

Trace Elements Investigations 283

Prepared in cooperation with the Atomic Energy Commission
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Abstract

Most of the caraotite deposits in the Uravan and Gateway mining districts ate in the persistent upper sandstone stratum of the Salt Wash sandstone member of the Morrison formation, Areas In which this stratum is predominantly lenticular have been delimited from areas in which this stratum is predominantly nonlenticularar. Ground most favorable for carnotite deposits is in areas of lenticular sandstone where the stratum is underlain by green-gray altered mudstone. Ore is localized in scour-and-fill bedded sandstones within favorable areas of lenticular sandstone. Regional control of the movement of ore-bearing solutions in the persistent ore-bearing sandstone stratum is indicated by; 1. A concave arcuate belt of partly altered mudstone transitional between areas of unaltered mudstone to the west and areas of altered mudstone to the east; 2. An increase in size, grade, and number of ore deposits from areas of partly altered to altered mudstone.

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Additional Publication Details

Publication type:
Report
Publication Subtype:
USGS Numbered Series
Title:
Geology of carnotite-bearing sandstone in the Uravan and Gateway districts, Montrose and Mesa counties, Colorado, and Grand County, Utah
Series title:
Trace Elements Investigations
Series number:
283
Year Published:
1953
Language:
English
Publisher:
U.S. Geological Survey
Publisher location:
Reston, VA
Description:
Report: 21 p.; Plate: 20.34 inches x 29.79 inches
Country:
United States
State:
Colorado;Utah
Additional Online Files(Y/N):
Y