Commodities
PrimarySilver, Copper
SecondaryLead, Iron
Commodity typeM
Deposit
Model82: Epithermal veins
Deposit sizeN
Ore controlOn Pioneer Vein
Materials
Ore mineralsChalcopyrite, Covellite, Galena, Malachite, Pyrite, Silver, Stephanite, Tetrahedrite
GangueBarite, Calcite, Clay
Geology
Host rockAndesite
Associated rockAndesite · Rosita Andesite
StructureRosita Cauldron And Crater Complex, North-Trending Fissures Dipping 60 To 70 Degrees East; Trachyte Dike Nearby
Tectonic settingWet Mountains
AlterationWeakly Argillized, Strongly Argillized In Places
Economic & production
Development statusPast Producer
Discovery year1895
Identification
Deposit ID10012192
MRDS IDD007664
RegionNA
Data scoreB
Coordinates38.10779, -105.34807
References
CROSS, WHITMAN, 1896, GEOLOGY OF SILVER CLIFF AND THE ROSITA HILLS, COLORADO: USGS 17TH ANN. REPORT, PT 2, P. 263-403.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.SHARP, W.M., 1978, GEOLOGIC MAP OF THE SILVER CLIFF AND ROSITA VOLCANIC CENTERS, CUSTER COUNTY, COLORADO: USGS MAPS I-1081.Sunshine Mining Co. Colorado exploration files, unpublished data, Colorado Geological Survey.