Keystone

The Keystone is a tungsten mine located in Madison county, Montana at an elevation of 8,599 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: Keystone  

State:  Montana

County:  Madison

Elevation: 8,599 Feet (2,621 Meters)

Commodity: Tungsten

Lat, Long: 45.57389, -111.95889

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 Keystone

Keystone MRDS details

Site Name

Primary: Keystone


Commodity

Primary: Tungsten
Tertiary: Antimony
Tertiary: Copper


Location

State: Montana
County: Madison
District: Potosi


Land Status

Not available


Holdings

Not available


Workings

Not available


Ownership

Owner Name: J. Flint
Years: 1958 -


Production

Not available


Deposit

Record Type: Site
Operation Category: Occurrence
Deposit Type: Vein
Operation Type: Unknown
Years of Production:
Organization:
Significant: N


Physiography

General Physiographic Area: Rocky Mountain System
Physiographic Province: Northern Rocky Mountains
Physiographic Detail: Tobacco Root Mountains


Mineral Deposit Model

Not available


Orebody

Not available


Structure

Type: L
Description: Nw-Trending Bismark Fault


Alterations

Not available


Rocks

Name: Quartz Monzonite
Role: Associated
Age Type: Associated Rock Unit
Age Young: Late Cretaceous

Name: Quartz Monzonite
Role: Associated
Age Type: Host Rock
Age Young: Late Cretaceous

Name: Quartz Monzonite
Role: Associated
Age Type: Associated Rock
Age Young: Late Cretaceous

Name: Quartz Monzonite
Role: Associated
Age Type: Host Rock Unit
Age Young: Neoproterozoic


Analytical Data

Not available


Materials

Ore: Tetrahedrite
Ore: Huebnerite


Comments

Comment (Location): LOCATED ON SOUTH SLOPE OF RIDGE EXTENDING SE OF POTOSI PEAK OVERLOOKING SOUTH WILLOW CREEK.

Comment (Production): THE STRAWBERRY-KEYSTONE GROUP IS REPORTED TO HAVE GROSSED $150,000 (1933)


References

Reference (Deposit): EYDE, 1958, POTOSI TUNGSTEN DIST, MADISON CO, MONT, MBMG. INF. CIRC. 21, P. 43

Reference (Deposit): 1916 COMPILE WINCHELL, BULL 574

Reference (Deposit): 1933 RECON MBMG MEM 9

Reference (Deposit): 1958 COMPILE MBMG INF CIR. 21

Reference (Production): TANSLEY, ET AL, P. 26.

Reference (Deposit): WINCHELL, 1916, MINING DISTRICTS-DILLON QUAD, MONT, USGS BULL 574 P. 125

Reference (Deposit): TANSLEY AND HART, 1933, GEOL. RECON-TOBACCO ROOT MTN, MADISON CO., MONT, MBMG MEM 9, P. 32


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.