The Shear Zone is a thorium mine located in Beaverhead county, Montana at an elevation of 7,402 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: 7,402 Feet (2,256 Meters)
Commodity: Thorium
Lat, Long: 44.9475, -113.46222
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.
Shear Zone MRDS details
Site Name
Primary: Shear Zone
Secondary: Staatz Loc. No. M3
Commodity
Primary: Thorium
Location
State: Montana
County: Beaverhead
District: Lemhi Pass
Land Status
Not available
Holdings
Not available
Workings
Not available
Ownership
Owner Name: Sawyer Petroleum Co.
Production
Not available
Deposit
Record Type: Site
Operation Category: Occurrence
Operation Type: Unknown
Years of Production:
Organization:
Significant: N
Physiography
General Physiographic Area: Rocky Mountain System
Physiographic Province: Northern Rocky Mountains
Mineral Deposit Model
Not available
Orebody
Not available
Structure
Type: L
Description: Biotitic Igneous Dike Lies Next To The Vein
Alterations
Not available
Rocks
Name: Quartzite
Role: Host
Age Type: Host Rock
Age Young: Neoproterozoic
Analytical Data
Analytical Data: RANGE FROM .0081 TO 2.49 PERCENT THORITE.
Materials
Ore: Thorite
Gangue: Specularite
Gangue: Barite
Gangue: Goethite
Gangue: Magnetite
Gangue: Brockite
Gangue: Rutile
Gangue: Microcline
Gangue: Monazite
Comments
Comment (Location): LOCATED SOUTH OF NORTH FRYING PAN CREEK.
Comment (Workings): TRENCHES AND PITS
References
Reference (Deposit): GEACH, R. D., 1972 , MINES AND MINERAL DEPOSITS, BEAVERHEAD, MONT., MONT. BUR. OF MINES AND GEOLOGY, BULL 85 .
Reference (Deposit): 1972 GEOLMAP GEACH, BULL 85.
Reference (Deposit): 1972 GEOLMAP STAATZ, BULL 1351
Reference (Deposit): STAATZ, M. H., 1972 , GEOLOGY AND DESCRIPTION OF TH-BEARING VEINS IN LEMHI PASS QUAD., IDA. & MONT., USGS BULL 1351 .
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.
