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U.S. Department of Energy
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RECONNAISSANCE FOR RADIOACTIVITY IN THE GOLD HILL MINING AREA, BOULDER COUNTY, COLARADO. Part I

Technical Report ·
OSTI ID:4323756
Several radioactive deposits were found as a result of reconnaissance in the Gold Hill mining area, Boulder Co., Colo. The ore deposits of the area have been worked chiefly for gold. All ore shipped has come from fissure veins, most of which are gold telluride veins. There are some important sulfide veins which show a vague zonal distribution of pyritic gold ores and silverlead ores. The results of this reconnaissance suggest a possible relationship of tbe radioactive deposits to this indistinct sulfide zoning; however, the zoning is so obscure that its practical application to prospecting for uranium is of doubtful value at the present time. Pitchblende, torbernits, metatorbernite, and schroeckingerite have been identified in specimens from the area; however, no uranium minerals have yet been identificd from most of the radioactive deposits, and the uraniferous material present is probably in disseminated small particles, Although selected samples from several localities assay 0.10% uranium or more, the known deposits are small and probably are not of immediate economic importance. (auth)
Research Organization:
Geological Survey, Washington, D.C.
NSA Number:
NSA-12-015513
OSTI ID:
4323756
Report Number(s):
TEM-563A
Country of Publication:
United States
Language:
English