Mine detail: Alexite Manganese Mine

Previously called ''

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Location

Lat / long:

38.23444, -107.06506

Resource(M)

Primary:	Manganese
Ore:	Wad
Gangue:	Jasper, Limonite, Opal

Production

Operation type:	Unknown
Production size:	Small
Development status:	Past Producer
First production started:	1943
Last production ended:	1943

Geology

Host type:	Pyroxenite,Granite
Associated rock:	Jasper;Pyroxenite;Fine-To Medium-Grained Granite;Powderhorn Granite
Associated type:	Pyroxenite,Granite
Structure:	Gunnison Uplift, San Juan Volcanic Field, Iron Hill Alkalic Complex, Cimarron Fault, Powderhorn Stock, Unnamed Faults
Tectonic:	Central Cordillera (Southern Rocky Mtns)
Alteration processes:	Oxidation Of Fe And Mn

References

MRDS	D011386
DEP	10014561
Reference	{Deposit:: OLSON, J.C., 1974, GEOLOGIC MAP OF THE RUDOLPH HILL QUADRANGLE, GUNNISON, HINSDALE, AND SAGUACHE COUNTIES, COLORADO: USGS MAP GQ-1177.}{Deposit:: MUILENBURG, G.A., 1919, MANGANESE DEPOSITS OF COLORADO: CGS BULL. 15, P. 38-40.}{Deposit:: COLORADO DIV. MINES INF. REPTS. AND ANNUAL OPERATOR REPTS.}{Deposit:: LA PLANTE, F.R., 1943, GUNNISON COUNTY ACTIVITIES: COLORADO MINING ASSOC. 1943 MINING YEARBOOK, P. 35-36. PROD}{Production:: COLORADO DIV. MINES ANNUAL OPERATOR REPT. AND INF. REPT.}
Reporter	Schwochow, Stephen D.