Montana · Granite County
Past Producer
Two Percent Mine
Granite County, Montana, United States
Silver
Zinc
Lead
Manganese
Copper
Gold
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USGS source ↗
Commodities
Primary
Silver, Zinc, Lead
Secondary
Manganese, Copper, Gold
Commodity type
M
Deposit
Deposit size
S
Workings
Underground
Orebody form
TABULAR, LENTICULAR, PODS
Ore control
Shear Zone
Materials
Ore minerals
Galena, Gold, Psilomelane
Gangue
Pyrolusite, Quartz, Rhodochrosite
Geology
Host rock
Limestone · Jefferson Limestone
Associated rock
Diorite · Philipsburg Batholith
Structure
Philipsburg Batholith, Philipsburg Anticline, Philipsburg Overthrust
Tectonic setting
Cordilleran Miogeosyncline
Economic & production
Development status
Past Producer
First production
1866
Discovery year
1865
Identification
Deposit ID
10071360
MRDS ID
W014700
Region
NA
Data score
B
Coordinates
46.33878, -113.27259
References
USGS BULL 922-G, P. 157-204.MBMG MEM NO 31, 125 P.USGS PP 78, P. 219.USGS BULL 1237.