Mine detail: Helena District

Previously called ''

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Location

Lat / long:

46.55823, -112.08421

Resource(B)

Primary:	Gold, Silver
Secondary:	Copper, Lead, Zinc, Stone
Tertiary:	Tungsten, Arsenic, Marble, Dimension, Dolomite
Ore:	Chalcopyrite, Galena, Gold, Limestone
Gangue:	Calcite, Pyrite, Quartz
Discovery year:	1864

Production

Operation type:	Unknown
Production size:	Large
Development status:	Past Producer

Geology

Host rock:	Madison Group
Host type:	Quartz Monzonite,Limestone,Andesite
Associated rock:	Butte Quartz Monzonite (Boulder Batholith);Elkhorn Mountain Volcanics
Associated type:	Quartz Monzonite
Structure:	Boulder Batholith

References

MRDS	D001593
DEP	10008989
Reference	{Deposit:: MBMG BULL 16, P. 7.}{Deposit:: USGS BULL 842, P. 202-09.}{Deposit:: USBM R1 6334, P. 25-6.}{Deposit:: USGS BULL 527, P. 85-7.}{Deposit:: USGS PP 610, P. 155.}{Deposit:: MBMG MEM 26, P. 43.}{Deposit:: USGS-USBM YEARBOOKS}{Deposit:: MBMG BULL 94.}{Production:: USGS PP 610, P. 155; USGS-USBM YEARBOOKS. MBMG BULL 94.}
Reporter	Fisher, Fred S., Wise, Kristine K. (Elliott, James E.)