Lat / long: | 37.5789, -108.17954 |
Primary: | Copper |
Ore: | Chalcocite, Malachite |
Gangue: | Calcite, Limonite, Pyrite |
Orebody form: | VEINLETS, LENTICULAR MASSES, DISSEMINATED |
Discovery year: | 1909 |
Operation type: | Underground |
Production size: | Small |
Development status: | Past Producer |
First production started: | 1909 |
Host rock: | Dolores Formation, Near Base Of Formation |
Host type: | Shale,Sandstone,Limestone |
Associated rock: | Monzonite Porphyry |
Associated type: | Monzonite,Felsic Volcanic Rock |
Structure: | San Juan Uplift (San Juan Mountains), La Plata Mountains Dome, Small Ne-Trending Fault About 0.5 Mile To Northwest; Parallel Faults, Fractures |
Tectonic: | Central Cordillera (Southern Rocky Mountains), Colorado Plateau |
Alteration processes: | Hydrothermal Alteration, Bleaching |
MRDS | D009280 |
MAS | 80830080 |
DEP | 10097847 |
Reference | GODDARD, E.N., 1949, COPPER DEPOSITS OF THE BEAR CREEK DISTRICT, IN ECKEL, E.B., 1949, GEOLOGY AND ORE DEPOSITS OF THE LA PLATA DISTRICT, COLORADO: USGS PROF. PAPER 219, P. 70-72, 150-152. |
Reporter | Wilson, Anna B., Collins, Donna B. |