Midnight Mine, Aspen District (Roaring Fork District), Pitkin Co., Colorado, USA
REF:Deposit:: SPURR, J. E., 1898, GEOLOGY OF THE ASPEN DISTRICT, COLORADO: USGS MON. 31
Deposit:: BRYANT, BRUCE, 1971, GEOLOGIC MAP OF THE ASPEN QUADRANGLE, PITKIN COUNTY, COLORADO: USGS MAP GQ-933
Deposit:: BRYANT, BRUCE, 1972, MAP SHOWING MINES, PROSPECT
Commodities (Major) - Silver, Lead, Zinc; (Trace) - Gold, Copper
Development Status: Past Producer
Host Rock Unit: Leadville Limestone
Structure: Castle Creek Fault Zone, Annie Fault, Winnie Fault, Hope Fault, Sawatch Uplift, Central Colorado Trough, Piceance Basin, White River Uplift, Elk Uplift
Host Rock: Shale
Tectonic Structure: Central Cordillera (Southern Rocky Mtns); Colorado Platform
11 entries listed. 8 valid minerals.
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