Mine detail: Midnight Mine

Previously called ''

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Location

Lat / long:

45.9299, -112.03004

Resource(M)

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

Production

Operation type:	Unknown
Deposit type:	Vein
Production size:	Small
Development status:	Past Producer
Production years:	ITEMS 1-4: 1917-1949
First production started:	1917

Geology

Host rock:	Greyson Shale;Flathead Quartzite
Host type:	Shale
Structure:	West Bull Mtn Block, Fissures, North Trending Faults And Folds
Tectonic:	Laramide Fold-Thrust Belt.
Alteration processes:	Oxidation

References

MRDS	DC11067
DEP	10019658
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:: LINDQUIST, A.E., 1966, STRUCTURE AND MINERALIZATION OF THE WHITEHALL MINING DISTRICT,JEFFERSON CO., MONT: MT. SCHOOL OF MINES, M.S. THESIS, P. 76-77}{Deposit:: CONSV. DIV. COMP. DATE, 12-21-1961}{Deposit:: 1960 RECON MBMG BULLETIN 16}{Deposit:: 1960 RECON MONT. SCHOOL OF MINES, LINDQUIST, A.E., M.S.}
Reporter	Unknown, Loen, Jeffrey S. (Pearson, Robert C.)