Commodities
PrimaryCopper
SecondarySilver
TertiaryVanadium
Commodity typeM
Deposit
Model197: Sediment-hosted Cu
Deposit sizeS
WorkingsUnknown
Ore controlCarbonaceous Shales, Coal Seams Control Ore
Materials
Ore mineralsChalcocite, Malachite, Silver
GangueBarite
Geology
Host rockShale,Siltstone,Sandstone,Coal,Black Shale · Minturn Formation, Belden Formation;Harding Sandstone; Manitou Limestone (?)
Associated rockConglomerate
StructureCotopaxi Fault lies just east of the shaft., Thirtynine Mile Volcanic Field, Cotopaxi Fault
Tectonic settingCentral Cordillera (Southern Rocky Mountains)
AlterationOxidized To Reddish, Yellowish, Or Red-Brown Color
Economic & production
Development statusPast Producer
First production1907
Last production1907
Discovery year1875
Identification
Deposit ID10013260
MRDS IDD009457
RegionNA
Data scoreB
Coordinates38.50779, -105.69697
References
LINDGREN, WALDEMAR, 1908, NOTES ON COPPER DEPOSITS IN CHAFFEE, FREMONT, AND JEFFERSON COUNTIES, COLORADO: USGS BULLETIN 340, P. 170-174.BUTLER, J.R., 1954, GEOLOGY OF AN AREA NORTH OF COTOPAXI, FREMONT COUNTY, COLORADO: M. S. THESIS, UNIVERSITY OF COLORADO, P. 47-48.TAYLOR, R.B., SCOTT, G.R., WOBUS, R.A., EPIS, R.C., 1975, RECONNAISSANCE GEOLOGIC MAP OF THE COTOPAXI 15-MINUTE QUADRANGLE, FREMONT AND CUSTER COUNTIES, COLORADO: USGS MAP I-900, 1:62,500.SCOTT, G.R., 1975, HISTORIC TRAIL MAPS OF THE PUEBLO 1 DEGREE X 2 DEGREES QUADRANGLE, COLORADO: USGS MAP I-930, 1:250,000