Mine detail: Ute District

Previously called 'Platoro District'

Location:	Conejos County, Colorado, United States, North America
Lat / long:	37.35172, -106.5334
dep_id:	60000376
mrds_id:	D010735
Commodity type:	metallic
Major mineral:	Silver, Gold
Minor mineral:	Lead, Copper
Trace mineral:	Tellurium, Antimony, Molybdenum, Zinc
Operation type:	Unknown
Deposit type:	VEIN, PIPE, DISSEMINATION, REPLACEMENT
Production size:	Small ammount of material produced
Development status:	Producer
model:	154: Epithermal quartz-alunite Au
alteration:	PROPYLITIC 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)
ore_ctrl:	NW-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
Structure:	PLATORO CALDERA, SUMMITVILLE CALDERA, PLATORO FAULT ZONE, CALIFORNIA GULCH FAULT, SAN JUAN VOLCANIC FIELD
yfp_ba:	>
Year first produced:	1880
yr_lst_prd:	1974
dy_ba:	>
disc_yr:	1880
References:	Deposit:: PATTON, H.B., 1917, GEOLOGY AND ORE DEPOSITS OF THE PLATORO-SUMMITVILLE MINNING DISTRICT, COLORADO: CGS BULL. 13. Deposit:: LIPMAN, P.W., 1974, GEOLOGIC MAP OF THE PLATORO CALDERA AREA, SOUTHEASTERN SAN JUAN MOUNTAINS, SOUTHWESTERN COLORADO: USGS MAP I-828. Deposit:: LIPMAN, P.W., 1975, EVOLUTION OF THE PLATORO CALDERA COMPLEX AND RELATED VOLCANIC ROCKS, SOUTHEASTERN SAN JUAN MOUNTAINS, COLORADO: USGS PROF. PAPER 852. Deposit:: STEVEN, T.A., AND LIPMAN, P.W., 1976, CALDERAS OF THE SAN JUAN VOLCANIC FIELD, SOUTHEASTERN COLORADO: USGS PROF.PAPER 958. Deposit:: 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. Deposit:: 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. Deposit:: WORCESTER, P.G., 1919, MOLYBDENUM DEPOSITS OF COLORADO WITH GENERAL NOTES ON THE MOLYBDENUM INDUSTRY: CGS BULL. 14, P. 52. Deposit:: COLORADO DIV. MINES INF. REPTS. AND ANNUAL OPERATOR REPTS. Deposit:: BLM MINERAL SURVEYS Deposit:: HAMMEN, C.W., AND WUENSCH, C.E., 1914, THE PLATORO DISTRICT, COLORADO--ITS TOPOGRAPHY, GEOLOGY, MINES, AND ORES: COLORADO SCHOOL OF MINES THESIS T-468.