Commodities
PrimarySilver
SecondaryCopper, Lead
Commodity typeM
Deposit
Model105: Epithermal vein, generic
Deposit sizeS
WorkingsUnderground
Ore controlHumboldt-Pocahontas Vein; Mineralized Fissures
Materials
Ore mineralsChalcopyrite, Galena, Pyrite, Silver, Stephanite, Tetrahedrite
GangueBarite, Calcite, Clay
Geology
Host rockVolcanic Breccia (Agglomerate),Andesite · San Isabel Granite Of Boyer Found On Fifth And Eighth Level Of Mine On Ne Hanging Wall
Associated rockTrachyte,Andesite · Rosita Andesite;Game Ridge Trachyte
StructureRosita Volcanic Center, Wet Mtns, Rosita Fault
Tectonic settingCentral Cordillera (Southern Rocky Mtns)
AlterationArgillized
Economic & production
Development statusPast Producer
First production1874
Discovery year1874
Identification
Deposit ID10012434
MRDS IDD008062
Alternate namesGlobe Shaft, South Humboldt Claim, West Virginia Claim, Humboldt-Pocahontas vein
RegionNA
Data scoreB
Coordinates38.10362, -105.33307
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. 405-472SHARP, W.N., 1978, GEOLOGIC MAP OF THE SILVER CLIFF AND ROSITA VOLCANIC CENTERS, CUSTER COUNTY, COLORADO: USGS MAP I-1081, 1:24,000.Sunshine Mining Co. Colorado exploration files, unpublished data, Colorado Geological Survey.