Mine detail: Summitville Mine

Previously called 'Golconda TunnelReynolds Tunnel'

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Location

Lat / long:

37.42585, -106.59282

Resource(M)

Primary:	Silver, Gold, Copper
Secondary:	Lead
Tertiary:	Zinc
Ore:	Covellite, Galena, Gold, Sphalerite

Production

Operation type:	Unknown
Production size:	Small
Development status:	Producer
Last production ended:	1971

Geology

Host rock:	Quartz Latite Of South Mountain;Summitville Andesite
Host type:	Quartz Latite
Associated rock:	Quartz Latite Of South Mountain;Summitville Andesite
Associated type:	Quartz Latite,Andesite
Structure:	San Juan Volcanic Field, Platoro Caldera, Summitville Caldera, Summitville Fault, South Mountain Dome
Tectonic:	Central Cordillera (Southern Rocky Mtns)
Alteration processes:	Quartz-Alunite Solfataric Alteration

References

MRDS	D010660
DEP	10014044
Reference	{Deposit:: PATTON, H.B., 1917, GEOLOGY AND ORE DEPOSITS OF THE PLATORO-SUMMITVILLE MINING DISTRICT, COLORADO: CGS BULL. 13.}{Deposit:: STEVEN, T.A., AND RATTE, J.C., 1960, GEOLOGY AND ORE DEPOSITS OF THE SUMMITVILLE DISTRICT, SAN JUAN MOUNTAINS, COLORADO: USGS PROF. PAPER 343}{Deposit:: LIPMAN, P.W., 1974, GEOLOGIC MAP OF THE PLATORO CALDERA AREA, SOUTHEASTERN SAN JUAN MOUNTAINS, SOUTHWESTERN COLORADO: USGS MAP I-828.}{Deposit:: COLORADO DIV. MINES INF. REPTS. AND ANNUAL OPERATOR REPTS.}{Deposit:: MINING ENGINEERING, JULY 1990.}{Deposit:: ENGINEERING & MINING JOURNAL, JUNE 1988, PP. 46.}{Deposit:: STOFFREGEN, R.E., 1987, GENESIS OF ACID-SULPHATE ALTERATION AND AU-CU-AG MINERALIZATION AT SUMMITVILLE, COLORADO: ECONOMIC GEOLOGY, V. 82, PP. 1575, 1591.}{Production:: COLORADO DIV. MINES ANN. OPERATOR REPTS. ; MINING ENGINEERING, JULY 1990.; ENGINEERING & MINING JOURNAL, JUNE 1988. DENVER POST, MAY 14, 1990.}
Reporter	Schwochow, Stephen D. (Hasler, J. William), Berger, Mary A.