Commodities
PrimaryGold, Silver
SecondaryCopper, Zinc, Lead
Commodity typeM
Deposit
Model82: Epithermal veins
Deposit sizeS
Orebody formPIPE-LIKE STRUCTURE
Ore controlAt Junction Of Two Fracture Planes
Materials
Ore mineralsChalcopyrite, Galena, Gold, Jamesonite, Smithsonite, Sphalerite, Tetrahedrite
GangueCalcite, Dolomite, Pyrite, Quartz, Stibnite
Geology
Host rockTuff,Volcanic Breccia (Agglomerate),Andesite · Granite And Gneiss Fragments Found At Depth
Associated rockAndesite · Rosita Andesite
StructureRosita Volcanic Center, Wet Mtns, Breccia Pipe, Faults, Fractures, Mineralized Fissures
Tectonic settingCentral Cordillera (Southern Rocky Mtns)
AlterationStrong Argillization; Quartz Zone
Economic & production
Development statusPast Producer
First production1878
Discovery year1877
Identification
Deposit ID10012430
MRDS IDD008054
RegionNA
Data scoreB
Coordinates38.1289, -105.33363
References
CROSS, WHITMAN, 1896, GEOLOGY OF SILVER CLIFF AND THE ROSITA HILLS, COLORADO: USGS 17TH ANN. REPORT, PT 2, P. 263-403.SHARP, W.N., 1978, GEOLOGIC MAP OF THE SILVER CLIFF AND ROSITA VOLCANIC CENTERS, CUSTER COUNTY, COLORADO: USGS MAP I-1081, 1:24,000. .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, T 1042, 222 P.