Commodities
PrimarySilver, Gold
SecondaryLead, Copper
TertiaryTellurium, Antimony, Molybdenum, Zinc
Commodity typeM
Deposit
Deposit typeVEIN, PIPE, DISSEMINATION, REPLACEMENT
Model154: Epithermal quartz-alunite Au
Deposit sizeS
Ore controlNW-TRENDING PLATORO FAULT ZONE AND BROADER CONTROLLING PLATORO LINEAMENT AT HINGELINE OF CORNWALL RESURGENT BLOCK AND AT INTERSECTION WITH CALDERA RIM FAULT; FAULT-CONTROLLED BRECCIA-PIPE VENT; POROUS PRECALDERA BRECCIA ON CALDERA RIM FAULT
Geology
StructurePLATORO CALDERA, SUMMITVILLE CALDERA, PLATORO FAULT ZONE, CALIFORNIA GULCH FAULT, SAN JUAN VOLCANIC FIELD
AlterationPROPYLITIC ALTERATION OF LA JARA CANYON TUFF WITHIN CALDERA PROBABLY RELATED TO UNTRUSION OF ALAMOSA RIVER STOCK, RHYODACITE PORPHYRY STOCK, AND VENT AREA OF FISHER GULCH RHYODACITE. PROPYLITIC ALTERATION IN VERA BRECCIA PIPE; SERICITIZATION IN DEE STOCK. ALTERATION RELATED TO MINERALIZATION RESTRICTED TO LOCAL ARGILLIC SELVAGES AND SILICIFICATION ALONG QUARTZ-PYRITE VEINS; FE OXIDATION (HEMATITE STAINING)
Economic & production
Development statusProducer
First production1880
Last production1974
Discovery year1880
Identification
Deposit ID60000376
MRDS IDD010735
Alternate namesPlatoro District
RegionNA
Data scoreC
Coordinates37.35172, -106.5334
References
PATTON, H.B., 1917, GEOLOGY AND ORE DEPOSITS OF THE PLATORO-SUMMITVILLE MINNING DISTRICT, COLORADO: CGS BULL. 13.LIPMAN, P.W., 1974, GEOLOGIC MAP OF THE PLATORO CALDERA AREA, SOUTHEASTERN SAN JUAN MOUNTAINS, SOUTHWESTERN COLORADO: USGS MAP I-828.LIPMAN, P.W., 1975, EVOLUTION OF THE PLATORO CALDERA COMPLEX AND RELATED VOLCANIC ROCKS, SOUTHEASTERN SAN JUAN MOUNTAINS, COLORADO: USGS PROF. PAPER 852.STEVEN, T.A., AND LIPMAN, P.W., 1976, CALDERAS OF THE SAN JUAN VOLCANIC FIELD, SOUTHEASTERN COLORADO: USGS PROF.PAPER 958.LIPMAN, P.W., AND STEVEN, T.A., 1970, RECONNAISSANCE GEOLOGY AND ECONOMIC SIGNIFICANCE OF THE PLATORO CALDERA, SOUTHEASTERN SAN JUAN MOUNTAINS, COLORADO: USGS PROF. PAPER 700-C, P. C19-C29.BIRD, W.H., 1972, MINERAL DEPOSITS OF THE SOUTHERN PORTION OF THE PLATORO CALDERA COMPLEX SOUTHEAST SAN JUAN MOUNTAINS, COLORADO: MTN. GEOLOGIST, V. 9, NO. 4, P. 379-387.WORCESTER, P.G., 1919, MOLYBDENUM DEPOSITS OF COLORADO WITH GENERAL NOTES ON THE MOLYBDENUM INDUSTRY: CGS BULL. 14, P. 52.COLORADO DIV. MINES INF. REPTS. AND ANNUAL OPERATOR REPTS.BLM MINERAL SURVEYSHAMMEN, C.W., AND WUENSCH, C.E., 1914, THE PLATORO DISTRICT, COLORADO--ITS TOPOGRAPHY, GEOLOGY, MINES, AND ORES: COLORADO SCHOOL OF MINES THESIS T-468.