Mine detail: St. Louis Mine

Previously called ''

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Location

Lat / long:

38.30195, -106.12949

Resource(M)

Primary:	Lead, Copper, Silver, Gold
Secondary:	Zinc
Tertiary:	Manganese
Ore:	Bornite, Chalcocite, Galena, Pyrite, Sphalerite, Tennantite
Gangue:	Jasper, Quartz

Production

Operation type:	Unknown
Production size:	Small
Development status:	Past Producer
Last production ended:	1946

Geology

Host rock:	Rawley Andesite
Host type:	Andesite
Associated rock:	Rawley Andesite
Associated type:	Andesite
Structure:	Bonanza Caldera, Sawatch Range, San Juan Volcanic Field, Rio Grande Rift
Tectonic:	Central Cordillera (Southern Rocky Mtns.)
Alteration processes:	Early Barren Stage Of Alteration By Fumarolic Or Acid-Hot Spring Activity Resulted In Intense Silicification, Wallrock Replacement By Jasper And Alteration Products Hematite, Diaspore, Alunite, Barite, Zunyite, Rutile, And Kaolin Minerals. Later Mineralizing Stage By Alkaline Or Neutral Solutions Deposited Ore And Gangue And Caused Micaceous Alteration (Sericite And Chlorite) And Calcite, Quartz, And Pyrite.

References

MRDS	D008247
DEP	10012565
Reference	{Deposit:: PATTON, H.B., 1916, GEOLOGY AND ORE DEPOSITS OF THE BONANZA DISTRICT, SAGUACHE COUNTY, COLORADO: COLORADO GEOLOGICAL SURVEY BULL. 9, 136 P.}{Deposit:: BURBANK, W.S., 1932, GEOLOGY AND ORE DEPOSITS OF THE BONANZA MINING DISTRICT, COLORADO: USGS PROF. PAPER 169, 166 P.}{Production:: BURBANK (1932) AS COMPILED FROM U.S. GOVT. RECORDS; COLO. DIV. MINES ANN. OPERATORS REPTS.}
Reporter	Schwochow, Stephen D.