Mine detail: Stephen Prospect

Previously called 'West Leviathan-Stephen-Leavenworth vein'

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Location

Lat / long:

38.10862, -105.34363

Resource(M)

Primary:

Silver

Production

Operation type:	Unknown
Deposit type:	Vein
Production size:	None
Development status:	Prospect

Geology

Host type:	Andesite
Associated rock:	Rosita Andesite
Associated type:	Andesite
Structure:	Rosita Volcanic Center, Wet Mtns, Rosita Fault
Tectonic:	Central Cordillera (Southern Rocky Mtns)
Alteration processes:	Weak Argillization

References

MRDS	D007866
DEP	10012310
Reference	{Deposit:: SIEMS, P.L., 1967, VOLCANIC AND ECONOMIC GEOLOGY OF THE ROSITA HILLS AND SILVER CLIFF DISTRICTS, CUSTER COUNTY, COLORADO: COLORADO SCHOOL MINES, D. SC. THESIS, T1042, 222 P.}{Deposit:: SHARP, W.M., 1978, GEOLOGIC MAP OF THE SILVER CLIFF AND ROSITA VOLCANIC CENTERS, CUSTER COUNTY, COLORADO: USGS MAP I-1081.}{Reserve-Resource:: Sunshine Mining Co. Colorado exploration files, unpublished data, Colorado Geological Survey.}
Reporter	Collins, Donna B., Beach, Richard A.