Mine detail: Ute District

Previously called 'Platoro District'

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Location

Lat / long:

37.35172, -106.5334

Resource(M)

Primary:	Silver, Gold
Secondary:	Lead, Copper
Tertiary:	Tellurium, Antimony, Molybdenum, Zinc
Discovery year:	1880

Production

Operation type:	Unknown
Deposit type:	VEIN, PIPE, DISSEMINATION, REPLACEMENT
Production size:	Small
Development status:	Producer
First production started:	1880
Last production ended:	1974

Geology

Structure:

PLATORO CALDERA, SUMMITVILLE CALDERA, PLATORO FAULT ZONE, CALIFORNIA GULCH FAULT, SAN JUAN VOLCANIC FIELD

Alteration processes:

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)

References

MRDS	D010735
DEP	60000376
Reference	{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.}