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
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.
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
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.
