Commodities
PrimaryCopper
Commodity typeM
Deposit
Model85: Polymetallic veins
Deposit sizeS
WorkingsUnknown
Orebody formVEINLETS, LENSES
Ore controlFaults, Fracture Zones Paralleling Monzonite Dikes; Coaly Material
Materials
Ore mineralsChalcocite, Malachite
GangueCalcite, Limonite, Pyrite
Geology
Host rockShale,Sandstone,Limestone · Dolores Formation
Associated rockMonzonite,Felsic Volcanic Rock,Plutonic Rock · Monzonite Porphyry
StructureSan Juan Uplift (San Juan Mountains), La Plata Mountains Dome, Small Ne-Trending Fault About 0.75 Mile To The Northwest; Three Nearly Vertical Fracture Zones, 15 To 20 Ft Apart, All Parallel To Dike; Two Small Fracture Zones Nearly At Right Angles To Dike
Tectonic settingCentral Cordillera (Southern Rocky Mountains), Colorado Plateau
AlterationHydrothermal Alteration, Bleaching
Economic & production
Development statusPast Producer
First production1905
Identification
Deposit ID10013144
MRDS IDD009283
RegionNA
Data scoreB
Coordinates37.57418, -108.17621
References
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, 110.ECKEL, E.B., 1949, USGS PP-219.