Commodities
PrimarySilver
Commodity typeM
Deposit
Deposit typeVein
Model82: Epithermal veins
Deposit sizeS
Ore controlBreccia Pipe; Ore In Concentric Shells Around Breccia Boulders, Trachyte Dikes
Materials
Ore mineralsGalena, Sphalerite
GangueActinolite, Pyrite
Geology
Host rockAndesite,Volcanic Breccia (Agglomerate) · Rosita Andesite
StructureRosita Volcanic Center, Wet Mtns, In Breccia Pipe, Small Faults
Tectonic settingCentral Cordillera (Southern Rocky Mtns)
AlterationStrong Argillization
Economic & production
Development statusPast Producer
Discovery year1882
Identification
Deposit ID10012203
MRDS IDD007678
RegionNA
Data scoreB
Coordinates38.12668, -105.34529
References
CROSS, WHITMAN, 1896, GEOLOGY OF SILVER CLIFF AND THE ROSITA HILLS, COLORADO: USGS 17TH ANN. REPORT, PT 2, P. 263-403EMMONS, 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 MAPS I-1081.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.