Montana · Silver Bow County
Past Producer
Steward Mine
Silver Bow County, Montana, United States
Copper
Silver
Gold
Zinc
Barium-Barite
Arsenic
Fluorine-Fluorite
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USGS source ↗
Description
W. A. Clark
Commodities
Primary
Copper, Silver, Gold
Secondary
Zinc
Tertiary
Barium-Barite, Arsenic, Fluorine-Fluorite
Commodity type
B
Deposit
Deposit size
S
Workings
Underground
Ore control
Steward Vein System And Fault System With Ne Orientation
Materials
Ore minerals
Bornite, Chalcocite, Chalcopyrite, Enargite, Sphalerite, Tennantite
Gangue
Pyrite, Quartz
Geology
Host rock
Quartz Monzonite · Aplite
Associated rock
Quartz Monzonite,Granite · Butte Quartz Monzonite (Boulder Batholith)(Boulder Batholith) (Boulder Batholith)
Structure
Boulder Batholith, Rarus Fault
Alteration
Main Stage Hydrothermal Alteration
Economic & production
Development status
Past Producer
First production
1880
Discovery year
1879
Identification
Deposit ID
10070471
MRDS ID
W013417
Region
NA
Data score
B
Coordinates
46.01879, -112.53645
References
MILLER, R. N., ED., 1973, GUIDEBOOK FOR THE BUTTE FIELD MEETING, PRESENTED BY THE SOCIETY OF ECONOMIC GEOLOGISTS.USGS PP 74, P. 147-51.MBMG BULL 109, P. 20USGS PP 74.