Commodities
PrimarySilver
Commodity typeM
Deposit
Deposit typeVein
Model82: Epithermal veins
Deposit sizeS
WorkingsUnderground
Ore controlAt Or Near Trachyte Boundary With Gneiss Along Fault
Materials
Ore mineralsChalcocite, Galena
Geology
Host rockTrachyte
Associated rockTrachyte · Game Ridge Trachyte;Undivided Gneiss
StructureRosita Volcanic Center, Wet Mtns, California Fault
Tectonic settingCentral Cordillera (Southern Rocky Mtns)
AlterationWeakly Argillized
Economic & production
Development statusPast Producer
Discovery year1895
Identification
Deposit ID10012294
MRDS IDD007846
RegionNA
Data scoreB
Coordinates38.11362, -105.31863
References
CROSS, WHITMAN, 1896, GEOLOGY OF SILVER CLIFF AND THE ROSITA HILLS, COLORADO: USGS 17TH ANN. REPORT, PT 2, P. 263-403.EMMONS, S.F., 1896, THE MINES OF CUSTER COUNTY, COLORADO: USGS 17TH ANN. REPORT, PT 2, P. 405-472.SHARP, W.M., 1978, GEOLOGIC MAP OF THE SILVER CLIFF AND ROSITA VOLCANIC CENTERS, CUSTER COUNTY, COLORADO: USGS MAP I-1081.Sunshine Mining Co. Colorado exploration files, unpublished data, Colorado Geological Survey.