Commodities
PrimarySilver, Aluminum
TertiaryGold
Commodity typeM
Deposit
Deposit typeVein
Model154: Epithermal quartz-alunite Au
Deposit sizeS
Ore controlFaults, Mineralized Fissures
Materials
Ore mineralsPyrite
GangueAlunite, Diaspore, Quartz
Geology
Host rockTrachyte
Associated rockRhyolite,Trachyte · Game Ridge Trachyte; Possibly Rosita Andesite Influence;Rhyolite Of Rosita Volcano (Dike)
StructureRosita Volcanic Center, Wet Mtns, Faults, Volcanic Vent, Rhyolite Dike
Tectonic settingCentral Cordillera (Southern Rocky Mtns)
AlterationWeak Argillization
Economic & production
Development statusPast Producer
Discovery year1882
Identification
Deposit ID10012309
MRDS IDD007865
RegionNA
Data scoreB
Coordinates38.11973, -105.33335
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.