Mine detail: Surprise Mine

Previously called 'Olso
* Surprise'

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Location

Lat / long:

45.91879, -112.03448

Resource(M)

Primary:	Gold, Silver, Lead, Copper, Zinc
Ore:	Galena
Gangue:	Pyrite

Production

Operation type:	Unknown
Deposit type:	Vein
Production size:	Small
Development status:	Past Producer
First production started:	1930

Geology

Host rock:	Greyson Shale
Host type:	Shale
Structure:	West Bull Mtn. Block, Nw To Ne Trending Folds And Faults
Tectonic:	Laramide Fold-Thrust Belt.

References

MRDS	DC11064
DEP	10019656
Reference	{Deposit:: MBMG BULL 16.}{Deposit:: ALEXANDER, R.G., 1955, GEOLOGY OF THE WHITEHALL AREA, MONTANA YELLOWSTONE-BIGHORN RESEARCH PROJECT, CONTRIBUTION 195, 111 P.}{Deposit:: CONSV. DIV. COMP. DATE, 12-21-1961}{Deposit:: 1960 RECON MBMG BULLETIN 1}{Production:: MBMG BULLETIN 16.}
Reporter	Unknown, Loen, Jeffrey S. (Pearson, Robert C.)