Mine detail: Big Casino Mine

Previously called 'Patented Claims: Big Casino No. 2, MS 69aBig Casino No. 2 Mill Site, MS 69bBig Casino No. 2, MS 836'

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Location

Lat / long: 38.01028, -107.43313

Resource(M)

Primary: Silver, Gold, Lead
Secondary: Copper
Tertiary: Zinc, Antimony
Ore: Galena, Sphalerite
Gangue: Quartz
Discovery year: 1876

Production

Operation type: Unknown
Deposit type: Vein
Production size: Small
Development status: Past Producer
Last production ended: 1968

Geology

Host rock:Picayune Megabreccia Member Of Sapinero Mesa Tuff
Host type:Volcanic Breccia (Agglomerate),Rhyolite
Associated rock:Eureka Member Of Sapinero Mesa Tuff
Associated type:Rhyolite
Structure:San Juan Volcanic Field, San Juan Depression, San Juan-Uncompahgre Calderas, Lake City Caldera, Eureka Graben
Tectonic:Central Cordillera (Southern Rocky Mtns)

References

MRDSD011628
DEP10014729
Reference{Deposit:: IRVING, J.D., AND BANCROFT, HOWLAND, 1911, GEOLOGY AND ORE DEPOSITS NEAR LAKE CITY, COLORADO: USGS BULL. 478, P. 81.}{Deposit:: SLACK, J.F., 1980, MULTISTAGE VEIN ORES OF THE LAKE CITY DISTRICT, WESTERN SAN MOUNTAINS, COLORADO: ECON. GEOLOGY, V. 75, NO. 7, P.963-991.}{Deposit:: LIPMAN, P.W., 1976, GEOLOGIC MAP OF THE LAKE CITY CALDERA AREA, WESTERN SAN JUAN MOUNTAINS, SOUTHWESTERN COLORADO: USGS MAP I-962.}{Deposit:: COLORADO DIV. MINES INF. REPTS. AND ANNUAL OPERATOR REPTS.}{Deposit:: BLM MINERAL SURVEY MS 69A&B, 836}{Production:: COLORADO DIV. MINES ANNUAL OPERATOR REPTS.}
ReporterSchwochow, Stephen D.