Mine detail: Spring Group

Previously called 'Spring No. 2Lady Cora HellenRevis MineClaims: Spring No. 1'

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Location

Lat / long:

40.66859, -105.78533

Resource(M)

Primary:	Uranium
Tertiary:	Silver, Gold, Lead
Ore:	Galena, Pitchblende
Gangue:	Limonite
Discovery year:	1954

Production

Operation type:	Unknown
Production size:	Small
Development status:	Past Producer

Geology

Host rock:	Quartzofeldspathic Mica Schist And Gneiss And Hornblende Gneiss Undivided;Granitic Gneiss
Host type:	Mica Schist
Associated rock:	Pegmatite
Associated type:	Pegmatite
Structure:	Front Range Uplift, Sherman Batholith, Rawah Batholith, Ne-Trending Faults And Shear Zones
Tectonic:	Central Cordillera (Southern Rocky Mtns)
Alteration processes:	Sericitization

References

MRDS	D010392
DEP	10013862
Reference	{Deposit:: NELSON-MOORE, J.L., AND OTHERS, 1978, RADIOACTIVE MINERAL OCCURRENCES OF COLORADO AND BIBLIOGRAPHY: CGS BULL. 40, P. 210.}{Deposit:: PEARSON, R.C., AND OTHERS, 1981, MINERAL RESOURCES OF THE COMANCHE-BIG SOUTH, NEOTA-FLAT TOP, AND NEVER SUMMER WILDERNESS STUDY AREAS, NORTH-CENTRAL COLORADO: USGS OFR 81-578, P. 25-27}{Deposit:: COLORADO DIV. MINES INF. REPT.}
Reporter	Schwochow, Stephen D.