The Cumberland Mine is a gold and silver mine located in Fergus county, Montana at an elevation of 4,980 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: 4,980 Feet (1,518 Meters)
Commodity: Gold, Silver
Lat, Long: 47.18194, -109.20750
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.
Cumberland Mine MRDS details
Site Name
Primary: Cumberland Mine
Commodity
Primary: Gold
Primary: Silver
Location
State: Montana
County: Fergus
District: Warm Springs District
Land Status
Not available
Holdings
Not available
Workings
Type: Underground
Ownership
Owner Name: Cumberland Mines Syndicate
Owner Name: Coolidge, Bryant, Wieglenda And Associates
Production
Year: 1918
Time Period: 1904 - 1918
Material type: AG
Description: Cp_Grade: ^0.32 Oz/St
Year: 1918
Time Period: 1904 - 1918
Material type: AU
Description: Cp_Grade: ^0.38 Oz/St
Deposit
Record Type: Site
Operation Category: Past Producer
Operation Type: Unknown
Discovery Year: 1885
Discovery Method: Unknown
Years of Production:
Organization:
Significant: N
Deposit Size: S
Physiography
General Physiographic Area: Interior Plains
Physiographic Province: Great Plains Province
Physiographic Section: Missouri Plateau, Unglaciated
Physiographic Detail: Judith Mountains
Mineral Deposit Model
Not available
Orebody
Form: OVAL (REPLACEMENT)
Structure
Type: R
Description: Judith Mts. - Domal Structures Intruded By Cret - Tert Lacoliths
Type: L
Description: Replacement Deposit Covered By Network Of Small Fractures; A Fault Terminates The Contact Vein
Alterations
Not available
Rocks
Name: Syenite
Role: Host
Age Type: Host Rock Unit
Age Young: Mississippian
Name: Syenite
Role: Host
Age Type: Associated Rock Unit
Age Young: Pliocene
Analytical Data
Not available
Materials
Ore: Sylvanite
Comments
Comment (Production): PRODUCTION DATA PRIOR TO 1904 UNAVAILABLE.
Comment (Workings): THE LARGE REPLACEMENT DEPOSIT WAS MAJOR SOURCE OF ORE MINED. WORKINGS ON THIS BODY INCLUDED A SHAFT, ADIT, AND SEVERAL LEVELS. A MILL & CYANIDE PLANT ALSO EXISTED BUT WERE DESTROYED BY FIRE IN 1948.
Comment (Geology): SPOTTED HORSE, MAGINNIS, AND CUMBERLAND ON GOLD HILL SYENITE PORPHYRY - MADISON LIMESTONE CONTACT
Comment (Deposit): Discovery Year: 1880'S
References
Reference (Deposit): ROBERTSON, A. F., 1950, MINES & MINERAL DEPOSITS - FERGUS COUNTY, U.S. BUREAU MINES INF. CIRC. 7544.
Reference (Deposit): CORRY, A. V., 1933, SOME GOLD DEPOSITS - BROADWATER, BEAVERHEAD, PHILLIPS, AND FERGUS CO., MT BUREAU OF MINES & GEOLOGY MEMOIR 10.
Reference (Production): ROBERTSON, 1950, U.S.B.M. INF. CIRC. 7544
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.
