Montana · Granite County
Past Producer
Bryant
Granite County, Montana, United States
Silver
Manganese
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USGS source ↗
Commodities
Primary
Silver, Manganese
Commodity type
M
Deposit
Deposit size
S
Orebody form
CELLULAR, CAVERNOUS
Materials
Ore minerals
Psilomelane, Silver, Wad
Gangue
Quartz
Geology
Host rock
Limestone · Hasmark Formation
Structure
Philipsburg Batholith, Philipsburg Anticline, Philipsburg Overthrust
Alteration
Oxidized
Economic & production
Development status
Past Producer
Identification
Deposit ID
10019449
MRDS ID
DC10504
Alternate names
Lady Bryant, Seal Rock
Region
NA
Data score
B
Coordinates
46.33183, -113.27203
References
USGS BULL 725, P. 166-67.USGS BULL 1237, P. 31-57, PLATES