Montana · Jefferson County
Past Producer
Dumortierite Deposit
Jefferson County, Montana, United States
Kyanite
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USGS source ↗
Commodities
Primary
Kyanite
Commodity type
N
Deposit
Deposit size
S
Orebody form
DISSEMINATED FIBROUS AGGREGATE, VEINLETS
Materials
Ore minerals
Dumortierite
Gangue
Quartz, Sericite
Geology
Host rock
Quartz Latite
Associated rock
Quartz Latite · Elkhorn Mountain Volcanics
Structure
Boulder Batholith
Economic & production
Development status
Past Producer
Production years
1955
Identification
Deposit ID
10019384
MRDS ID
DC09905
Region
NA
Data score
C
Coordinates
46.36518, -112.31617
References
MBMG BULL 16, P. 85.USGS BULL 1151, P. 79, PL. 1.