Commodities
PrimaryCopper
SecondarySilver
TertiaryVanadium
Commodity typeM
Deposit
Model197: Sediment-hosted Cu
Deposit sizeN
Ore controlCarbonaceous Shales, Coal Seams Control Ore
Materials
Ore mineralsChalcocite, Malachite, Silver
GangueBarite
Geology
Host rockShale · Minturn Formation, Belden Formation;
StructureNear the Cotopaxi fault, which is reported as barren., 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
Discovery year1875
Identification
Deposit ID10087762
MRDS IDD009458
RegionNA
Data scoreB
Coordinates38.51557, -105.69808
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