Mine detail: Penobscot Mine

Previously called ''

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Location

Lat / long:

46.73046, -112.357

Resource(M)

Primary:	Gold, Silver
Ore:	Gold, Quartz
Orebody form:	PINCH AND SWELL
Discovery year:	1872

Production

Operation type:	Unknown
Deposit type:	Polymetallic veins
Production size:	Small
Development status:	Past Producer
First production started:	1878

Geology

Host rock:	Helena Formation
Host type:	Limestone
Associated rock:	Belmont Porphyry, Marysville Stock
Associated type:	Diorite,Granodiorite
Structure:	Boulder Batholith, Prickly Pear Dome, Marysville Stock, Post-Mineral Downthrown Fault Blocks
Tectonic:	Cordilleran Miogeosyncline

References

MRDS	W014728
DEP	10071383
Reference	{Deposit:: USGS BULL 527, P. 74-5.}{Deposit:: USGS BULL 842, P. 63, PL. 5.}{Deposit:: AM INST MINING METALL ENGINEERS BULL 92, P. 2113-16.}{Production:: MCDERMOTT, 1914, A. I. M. M. E. BULL. 92.; MBMG MEM. 31, 1950}
Reporter	Mlynarczyk, Meg S., Wise, Kristine K. (Elliott, James E.)