Mine detail: California Shaft

Previously called ''

<< Back to the map

Location

Lat / long:

38.11001, -105.32001

Resource(M)

Primary:	Silver
Secondary:	Lead
Ore:	Galena
Gangue:	Barite
Orebody form:	vein
Discovery year:	1883

Production

Operation type:	Underground
Deposit type:	Vein
Production size:	Small
Development status:	Past Producer
First production started:	1883

Geology

Host type:	Trachyte
Associated rock:	Trachyte Of Game Ridge;Undivided Gneiss; Dark, Augite-Gneiss
Associated type:	Trachyte
Structure:	Rosita Volcanic Center, Wet Mtns, California Fault Separates Trachyte And Gneiss
Tectonic:	Central Cordillera (Southern Rocky Mtns)
Alteration processes:	Weak Argillization

References

MRDS	D007839
DEP	10012288
Reference	{Deposit:: CROSS, WHITMAN, 1896, GEOLOGY OF SILVER CLIFF AND THE ROSITA HILLS, COLORADO: USGS 17TH ANN. REPORT, PT 2, P. 263-403.}{Deposit:: SHARP, W.M., 1978, GEOLOGIC MAP OF THE SILVER CLIFF AND ROSITA VOLCANIC CENTERS, CUSTER COUNTY, COLORADO: USGS MAP I-1081.}{Deposit:: Emmons, S.F., 1896, The mines of Custer County, Colorado: U.S. Geological Survey 17th Annual Report, Pt. 2, pp. 405-472.}{Reserve-Resource:: Sunshine Mining Co. Colorado exploration files, unpublished data, Colorado Geological Survey.}
Reporter	Collins, Donna B., Beach, Richard A.