The Sheridan is a gold mine located in Madison county, Montana at an elevation of 7,680 feet.
About the MRDS Data:
All mine locations were obtained from the USGS Mineral Resources Data System. The locations and other information in this database have not been verified for accuracy. It should be assumed that all mines are on private property.
Mine Info
Elevation: 7,680 Feet (2,341 Meters)
Commodity: Gold
Lat, Long: 45.5489, -112.12000
Map: View on Google Maps
Satelite View
MRDS mine locations are often very general, and in some cases are incorrect. Some mine remains have been covered or removed by modern industrial activity or by development of things like housing. The satellite view offers a quick glimpse as to whether the MRDS location corresponds to visible mine remains.
Sheridan MRDS details
Site Name
Primary: Sheridan
Commodity
Primary: Gold
Secondary: Silver
Secondary: Copper
Tertiary: Lead
Location
State: Montana
County: Madison
Land Status
Land ownership: National Forest
Note: the land ownership field only identifies whether the area the mine is in is generally on public lands like Forest Service or BLM land, or if it is in an area that is generally private property. It does not definitively identify property status, nor does it indicate claim status or whether an area is open to prospecting. Always respect private property.
Holdings
Not available
Workings
Not available
Ownership
Not available
Production
Year: 1959
Time Period: 1901-1959
Mined: 281000.000 mt
Material type: ore
Deposit
Record Type: Site
Operation Category: Past Producer
Deposit Type: Polymetallic veins
Operation Type: Underground
Mining Method: Unknown
Years of Production:
Organization:
Significant: Y
Physiography
General Physiographic Area: Rocky Mountain System
Physiographic Province: Northern Rocky Mountains
Mineral Deposit Model
Model Name: Polymetallic veins
Orebody
Not available
Structure
Type: R
Structure: TOBACCO ROOT BATHOLITH
Alterations
Not available
Rocks
Name: Granodiorite
Role: Associated
Age Type: Associated Rock
Age Young: Cretaceous
Name: Schist
Role: Host
Description: SCHIST, GNEISS, MARBLE
Age Type: Host Rock
Age Young: Archean
Analytical Data
Not available
Materials
Ore: Pyrite
Ore: Tetrahedrite
Ore: Galena
Ore: Cerussite
Ore: Chalcopyrite
Ore: Covellite
Ore: Sphalerite
Ore: Chromite
Comments
Comment (Exploration): QUARTZ VEINS DISCOVERED 1864, MILLS BUILT 1865. STEADY PRODUCTION THRU 1952. CHROMITE DISCOVERED AROUND 1930, FE DEPOSITS EXAMINED 1940'S-1950'S
Comment (Workings): EXTENSIVE UNDERGROUND WORKINGS IN LODE MINES, PITS AND TRENCHES ON FE AND CR DEPOSITS
References
Reference (Deposit): USBM-MRB 73, 1952, PA-16.
Reference (Deposit): USBM IC 6972, 1937, P61, MAP.
Reference (Deposit): MBMG MEM 9.
Reference (Deposit): USGS BULL 574
Reference (Deposit): MBMG MEM 41.
Principal Gold Districts of Montana
In Montana, 54 mining districts have each have produced more than 10,000 ounces of gold. The largest producers are Butte, Helena, Marysville, and Virginia City, each having produced more than one million ounces. Twenty seven other districts are each credited with between 100,000 and one million ounces of gold production. Read more: Principal Gold Districts of Montana.
