Montana · Jefferson County
Occurrence
Sylvan Mine
Jefferson County, Montana, United States
Uranium
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USGS source ↗
Commodities
Primary
Uranium
Commodity type
M
Deposit
Deposit size
N
Materials
Gangue
Pyrite, Quartz
Geology
Host rock
Quartz Monzonite
Associated rock
Quartz Monzonite · Butte Quartz Monzonite (Boulder Batholith)
Structure
Boulder Batholith
Alteration
Silicified, Sericitized, Kaolinized
Economic & production
Development status
Occurrence
Identification
Deposit ID
10019412
MRDS ID
DC09965
Region
NA
Data score
C
Coordinates
46.30546, -112.25921
References
USGS BULL 1151, P. 117, PL. 1