Montana · Jefferson County
Past Producer
Lotta Tunnel
Jefferson County, Montana, United States
Gold
Silver
Zinc
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USGS source ↗
Commodities
Primary
Gold
Secondary
Silver, Zinc
Commodity type
M
Deposit
Deposit size
S
Workings
Surface/Underground
Materials
Ore minerals
Gold
Gangue
Pyrite, Quartz
Geology
Host rock
Quartz Monzonite
Associated rock
Quartz Monzonite · Butte Quartz Monzonite(Boulder Batholith)
Structure
Boulder Batholith
Economic & production
Development status
Past Producer
First production
1895
Identification
Deposit ID
10101738
MRDS ID
D008091
Alternate names
Lotta Mine
Region
NA
Data score
B
Coordinates
46.25657, -112.26616
References
USGS BULL 1151, P. 112, PL. 1MBMG BULL 16, P. 34MBMG BULL 10, P. 28