Mine detail: Excelsior Mine

Previously called 'Patented Claim: ExcelsiorMs 5184'

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Location

Lat / long:

38.01222, -107.46674

Resource(M)

Primary:	Silver, Copper, Lead
Secondary:	Zinc
Tertiary:	Antimony
Ore:	Chalcopyrite, Copper, Galena, Pyrite, Silver, Sphalerite, Tetrahedrite
Gangue:	Limonite, Quartz
Discovery year:	1878

Production

Operation type:	Unknown
Deposit type:	Vein
Production size:	Small
Development status:	Past Producer
First production started:	1893
Last production ended:	1920

Geology

Host type:	Rhyolite
Associated rock:	Eureka Member Of Sapinero Mesa Tuff;Intrusive Rocks--Monzonite Porphyry;Intrusive Rocks--Rhyolite
Associated type:	Monzonite,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

MRDS	D011607
DEP	10014716
Reference	{Deposit:: IRVING, J.D., AND BANCROFT, HOWLAND, 1911, GEOLOGY AND ORE DEPOSITS NEAR LAKE CITY, COLORADO: USGS BULL. 478, P. 74-76.}{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:: BLM MINERAL SURVEY MS 5184}{Production:: IRVING AND BANCROFT, 1911, P. 74-75; MINERAL RESOURCES OF U.S.}
Reporter	Schwochow, Stephen D.