Montana · Madison County
Producer
Richmond Group
Madison County, Montana, United States
Gold
Silver
Copper
Lead
Zinc
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USGS source ↗
Description
Richmond Bros.
Commodities
Primary
Gold, Silver, Copper
Secondary
Lead, Zinc
Commodity type
M
Deposit
Deposit type
Vein
Deposit size
S
Workings
Underground
Ore control
Bedding Plane
Materials
Gangue
Quartz
Geology
Host rock
Quartzite · Flathead And Wolsey Formations.;Pony Gneiss
Associated rock
Meta-Basalt · Meta Basalt Sill;Andesite Sill
Structure
Ne To Nw Trending Normal And Reverse Faults.
Alteration
Oxidation, Gouge, Brecciation
Economic & production
Development status
Producer
Discovery year
1900
Identification
Deposit ID
10019745
MRDS ID
DC11347
Alternate names
Eagle, Hummingbird, Adits No. 4-9.
Region
NA
Data score
B
Coordinates
45.58184, -112.19587
References
MBMG BULL 24, P. 29-32