Mine detail: Gregory Mine

Previously called ''

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Location

Lat / long:

46.3899, -112.1156

Resource(M)

Primary:	Lead, Silver
Secondary:	Gold, Copper, Zinc
Tertiary:	Arsenic
Ore:	Chalcopyrite, Galena, Gold, Sphalerite
Gangue:	Pyrite, Quartz
Orebody form:	TABULAR
Discovery year:	1864

Production

Operation type:	Unknown
Production size:	Small
Development status:	Past Producer
First production started:	1867

Geology

Host type:	Quartz Monzonite,Andesite
Associated rock:	Butte Quartz Monzonite(Boulder Batholith);Elkhorn Mountain Volcanics
Associated type:	Quartz Monzonite,Andesite
Structure:	Boulder Batholith, South-Trending Syncline In Elkhorn Mountains Volcanics, North-South Trending Faults West Of Mine; Roof Pendant Of Elkhorn Mountains Volcanics
Tectonic:	Cordilleran Miogeosyncline
Alteration processes:	Pyritized, Sericitized, Tourmalinized

References

MRDS	W014702
DEP	10071361
Reference	{Deposit:: MBMG BULL 16, P. 6, 44, 46, 50-1, 108.}{Deposit:: USGS PP 428, P. 35, 69, 71.}{Deposit:: USGS BULL 842, P. 245.}{Deposit:: USGS BULL 527, P. 117.}{Production:: MBMG BULL 16, P. 108. USGS PP 428, P. 71.}
Reporter	Krohn, Douglas H., Wise, Kristine K. (Elliott, James E.)