Commodities
PrimarySilver
SecondaryGold
TertiaryCopper, Iron
Commodity typeM
Deposit
Deposit typeVein
Model82: Epithermal veins
Deposit sizeN
WorkingsUnderground
Ore controlFaults, Ophir Vein, Fractures
Materials
Ore mineralsChalcopyrite, Gold, Pyrite
Geology
Host rockTrachyandesite
Associated rockTrachyandesite · Bunker Trachyandesite, Main Body
StructureRosita Volcanic Center, Wet Mtns, On Ophir Vein
Tectonic settingCentral Cordillera (Southern Rocky Mtns)
AlterationWeakly Argillized
Economic & production
Development statusProspect
First production1900
Discovery year1882
Identification
Deposit ID10012182
MRDS IDD007651
Alternate namesBertha, Callahan, Ophir Lode
RegionNA
Data scoreB
Coordinates38.12445, -105.35085
References
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.