Cumberland Mine

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

Name: Cumberland Mine  

State:  Montana

County:  Fergus

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.


Satelite image of the Cumberland Mine

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

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.