Mine detail: Bonanza Mine

Previously called ''

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Location

Lat / long:

38.08807, -105.33585

Resource(M)

Primary:	Silver
Gangue:	Barite, Quartz
Discovery year:	1882

Production

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

Geology

Host type:	Rhyolite
Associated rock:	Rhyolite Of Rosita Volcano;Rhyodacite Of Bald Mountain
Associated type:	Rhyodacite
Structure:	Rosita Volcanic Center, Wet Mtns, Volcanic Vent; Vein At Contact Of Two Units
Tectonic:	Central Cordillera (Southern Rocky Mtns)
Alteration processes:	None Reported; Possibly Mild Argillization

References

MRDS	D007640
DEP	10012173
Reference	{Deposit:: CROSS, WHITMAN, 1896, GEOLOGY OF SILVER CLIFF AND THE ROSITA HILLS, COLORADO: USGS 17TH ANN. REPORT, PT 2, P. 263-403.}{Deposit:: EMMONS, S.F., 1896, THE MINES OF CUSTER COUNTY, COLORADO: USGS 17TH ANN. REPORT, PT 2, P. 405-472.}{Deposit:: SHARP, W.M., 1978, GEOLOGIC MAP OF THE SILVER CLIFF AND ROSITA VOLCANIC CENTERS, CUSTER COUNTY, COLORADO: USGS MAPS I-1081.}
Reporter	Collins, Donna B.