Montana · Jefferson County
Past Producer
Helper Mine
Jefferson County, Montana, United States
Silver
Lead
Copper
Zinc
Gold
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USGS source ↗
Commodities
Primary
Silver, Lead
Secondary
Copper, Zinc, Gold
Commodity type
M
Deposit
Deposit type
Unknown
Deposit size
S
Materials
Ore minerals
Gold
Geology
Host rock
Quartz Monzonite
Associated rock
Quartz Monzonite · Butte Quartz Monzonite (Boulder Batholith)
Structure
Boulder Batholith
Economic & production
Development status
Past Producer
Identification
Deposit ID
10102015
MRDS ID
DC11108
Region
NA
Data score
C
Coordinates
46.26157, -112.26199
References
USGS BULL 1151,, PL. 1.MBMG BULL 16, P. 103.