Mine detail: Golconda Mine

Previously called 'Gold CrescentMidasGolden ScepterJensenEnsignPaytellerPatented Claims: New Brighton Mill Site, MS 673bThunderbolt Mill Site, MS 685bFort Donaldson, MS 1230Bob Ingersoll, MS 16129Dewey No. 2, MS 16374Goodwin, MS 16754Unpatented Claims: GolcondaGold PickColchisEdward E. YaterGrasseyCroesus'

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Location

Lat / long:

37.95583, -107.54814

Resource(M)

Primary:	Silver, Gold
Secondary:	Copper, Lead
Tertiary:	Zinc, Antimony
Ore:	Argentite, Chalcopyrite, Galena, Pyrite, Sphalerite
Gangue:	Limonite, Quartz

Production

Operation type:	Unknown
Deposit type:	Vein
Production size:	Small
Development status:	Past Producer
Last production ended:	1919

Geology

Host type:	Rhyolite,Quartz Latite
Associated rock:	Biotite-Quartz Latite Of Burns Member Of Silverton Volcanics;Eureka Member Of Sapinero Mesa Tuff
Associated type:	Rhyolite,Quartz Latite
Structure:	San Juan Volcanic Field, San Juan Depression, San Juan-Uncompahgre Calderas, Lake City Caldera, Eureka Graben
Tectonic:	Central Cordillera (Southern Rocky Mtns)
Alteration processes:	Apparent Supergene Oxidation Of Sulfides To Pyrargyrite And Argentite

References

MRDS	D011611
DEP	10014719
Reference	{Deposit:: LIPMAN, P.W., 1976, GEOLOGIC MAP OF THE LAKE CITY CALDERA AREA, WESTERN SAN JUAN MOUNTAINS, SOUTHWESTERN COLORADO USGS MAP I-962.}{Deposit:: CROSS, WHITMAN, AND OTHERS, 1905, DESCRIPTION OF THE SILVERTON QUADRANGLE: USGS FOLIO 120, 34 P.}{Deposit:: BROWN, W.H., 1926, THE MINERAL ZONES OF THE WHITE CROSS DISTRICT AND NEIGHBORING DEPOSITS IN HINSDALE COUNTY, COLORADO: MINES MAG., V. 15, NO. 11, P. 5-15.}{Deposit:: COLORADO DIV. MINES INF. REPTS. AND ANNUAL OPERATOR REPTS.}{Deposit:: BLM MINERAL SURVEYS MS 673B, 685B, 1230, 16129, 16374, 16754}{Deposit:: LUEDKE, R.G., AND BURBANK, W.S., 1975, PRELIMINARY GEOLOGIC MAP OF THE HANDIES PEAK QUADRANGLE, COLORADO: USGS OPEN-FILE REPT. 75-432.}{Production:: COLORADO DIV. MINES ANNUAL OPERATOR REPT.}
Reporter	Schwochow, Stephen D.