Mine detail: Coolidge Mine

Previously called 'St. Joseph Claim'

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Location

Lat / long:

45.30823, -112.87478

Resource(M)

Primary:	Silver, Gold, Lead
Secondary:	Zinc, Copper
Orebody form:	TABULAR ORE SHOOT
Discovery year:	1875

Production

Operation type:	Unknown
Deposit type:	Vein
Production size:	Yes
Development status:	Past Producer
First production started:	1898

Geology

Host rock:	Jefferson
Host type:	Dolomite
Structure:	Jefferson Fm. Trends Ne With A Dip Of 27 Deg To 47 Deg Se According To Geach, Ne Striking Andesite Sill Or Dike Up To 15 Ft. In Assoc. With Bedding Plane

References

MRDS	W007447
DEP	10069769
Reference	{Deposit:: MBMG BULL 95.}{Deposit:: MBMG BULL 85.}{Deposit:: SHENON, P. J., 1931, GEOLOGY AND ORE DEPOSITS OF BANNACK AND ARGENTA, BEAVERHEAD CO., MT., MT. BUR. OF MINES & GEOL. BULL. 6.}{Production:: GEACH, R. D., 1972, MT. BUREAU OF MINES AND GEOLOGY BULLETIN 85.}
Reporter	Mlynarczyk, Meg S., Loen, Jeffrey S. (Pearson, Robert C.)