Commodities
PrimarySilver, Lead, Zinc
TertiaryCopper, Gold
Commodity typeM
Deposit
Deposit sizeS
WorkingsUnderground
Ore controlBreccia And Fault Contact Between Porphyry And Shale
Materials
Ore mineralsChalcopyrite, Sphalerite
GangueBarite, Chert, Quartz
Geology
Host rockShale · Belden Formation
StructureSawatch Uplift, Central Colorado Trough, Piceance Basin, White River Uplift, Elk Uplift, Castle Creek Fault Zone, Annie Fault, Winnie Fault, Hope Fault
Tectonic settingCentral Cordillera (Southern Rocky Mtns); Colorado Platform
Economic & production
Development statusPast Producer
Last production1951
Identification
Deposit ID10013387
MRDS IDD009652
Alternate namesSee Attachment
RegionNA
Data scoreB
Coordinates39.13221, -106.82256
References
SPURR, J. E., 1898, GEOLOGY OF THE ASPEN DISTRICT, COLORADO: USGS MON. 31BRYANT, BRUCE, 1971, GEOLOGIC MAP OF THE ASPEN QUADRANGLE, PITKIN COUNTY, COLORADO: USGS MAP GQ-933BRYANT, BRUCE, 1972, MAP SHOWING MINES, PROSPECTS, AND AREAS OF SIGNIFICANT SILVER, LEAD, AND ZINC PRODUCTION IN THE ASPEN QUADRANGLE, PITKIN COUNTY, COLORADO: USGS MAP I-785-DKNOPF, ADOLPH, 1926, RECENT DEVELOPMENTS IN THE ASPEN DISTRICT, COLORADO: USGS BULL. 785, P. 1-28WILLOUGHBY, F. D., 1937, ROUGH SKETCH OF WORKINGS, MIDNIGHT MINING CO.: UNPUB. MAPCOLO. DIV. MINES ANN. OPERATOR REPTS.