Montana · Jefferson County
Past Producer
Morning Glory Mine
Jefferson County, Montana, United States
Gold
Silver
Lead
Copper
Zinc
Arsenic
Antimony
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USGS source ↗
Commodities
Primary
Gold, Silver
Secondary
Lead, Copper, Zinc
Tertiary
Arsenic, Antimony
Commodity type
M
Deposit
Deposit size
S
Workings
Underground
Orebody form
SHOOTS
Ore control
Comet-Gray Eagle Shear Zone
Materials
Ore minerals
Chalcopyrite, Galena, Gold, Silver, Sphalerite
Gangue
Pyrite, Quartz
Geology
Host rock
Quartz Monzonite,Welded Tuff
Associated rock
Quartz Monzonite,Welded Tuff · Boulder Batholith, Butte Quartz Monzonite (Boulder Batholith);Elkhorn Mountains Volcanics
Structure
Boulder Batholith; South-Trending Syncline In Elkhorn Mountains Volcanics, Comet-Gray Eagle Shear Zone, Roof Pendant Of Elkhorn Mountain Volcanics.
Tectonic setting
Cordilleran Miogeosyncline
Alteration
Wallrock Altered To Clay Minerals And Sericite
Economic & production
Development status
Past Producer
Discovery year
1920
Identification
Deposit ID
10071339
MRDS ID
W014673
Region
NA
Data score
B
Coordinates
46.31768, -112.24394
References
MBMG BULL 16, P. 35, 104.USGS PP 428, P. 53, 88, PL. 1.MBMG BULL 58, P. 20.MBMG BULL. 16, P. 104