The Excelsior Mine is a silver, gold, and copper mine located in Beaverhead county, Montana at an elevation of 5,942 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: 5,942 Feet (1,811 Meters)
Commodity: Silver, Gold, Copper
Lat, Long: 45.14944, -112.97833
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.
Excelsior Mine MRDS details
Site Name
Primary: Excelsior Mine
Secondary: Excelsior Lode Mine
Commodity
Primary: Silver
Primary: Gold
Primary: Copper
Tertiary: Bismuth
Tertiary: Manganese
Tertiary: Tellurium
Location
State: Montana
County: Beaverhead
District: Bannack District
Land Status
Land ownership: Private
Note: the land ownership field only identifies whether the area the mine is in is generally on public lands like Forest Service or BLM land, or if it is in an area that is generally private property. It does not definitively identify property status, nor does it indicate claim status or whether an area is open to prospecting. Always respect private property.
Holdings
Not available
Workings
Type: Underground
Ownership
Owner Name: Phillip And Fred Shenon
Owner Name: Grand Deposit Mining Co.
Production
Year: 1902
Material type: ORE
Description: Ap_Grade: ^202 Short Tons Of Ore
Deposit
Record Type: Site
Operation Category: Past Producer
Operation Type: Unknown
Year First Production: 1902
Discovery Method: Unknown
Years of Production:
Organization:
Significant: N
Deposit Size: S
Physiography
General Physiographic Area: Rocky Mountain System
Physiographic Province: Northern Rocky Mountains
Physiographic Detail: Pioneer Mountains
Mineral Deposit Model
Not available
Orebody
Form: IRREGULAR SHOOTS
Structure
Type: R
Description: Eastward Thrusting
Type: L
Description: Step Faulting, Fractures
Alterations
Not available
Rocks
Name: Diorite
Role: Associated
Age Type: Associated Rock
Age Young: Pliocene
Name: Diorite
Role: Associated
Age Type: Host Rock
Age Young: Mississippian
Name: Diorite
Role: Associated
Age Type: Host Rock Unit
Age Young: Mississippian
Name: Diorite
Role: Associated
Age Type: Associated Rock Unit
Age Young: Pliocene
Analytical Data
Analytical Data: VEIN CHIP SAMPLE NEAR OLD SHAFT ASSAYED 0.001 OZ AU/TON, 0.05 OZ AG/TON, AND 0.30% CU.
Materials
Gangue: Garnet
Gangue: Calcite
Gangue: Bornite
Gangue: Quartz
Comments
Comment (Location): CENTER OF SW 1/4, SECTION 8.
Comment (Commodity): TETRADYMITE (BISMUTH TELLURIDE)
Comment (Development): IN 1963 THE GRAND DEPOSIT MINING CO. (RENO, NEV) EXPLORED A GRANODIORITE CONTACT ON THE ADIT LEVEL, UNDER A $80,000 OFFICE OF MINERALS EXP. CONTRACT. NO ORE WAS FOUND
Comment (Deposit): ORE OCCURS ON LIMESTONE SIDE OF GARNET ZONE. IT IS OFFSET TO THE SOUTHWEST BY A SERIES OF STEP FAULTS. MINERALIZED FRACTURES OCCUR ALONG OR NEAR THE GRANODIORITE CONTACT THE CONTACT STRIKES N35W AND DIPS 45W
Comment (Workings): 1500-FT OF DRIFTS AND CROSSCUTS AND 120 FEET OF STOPES. TWO INACCESSIBLE SHAFTS.
Comment (Geology): MADISON GROUP COMPOSED OF MISSION CANYON LS. AND LODGEPOLE LS.
References
Reference (Deposit): USGS BULL 574, P. 74-75.
Reference (Deposit): MBMG BULL 85, P. 80-81.
Reference (Deposit): MBMG BULL 6, P. 40.
Reference (Deposit): USGS MAP I-433.
Reference (Deposit): 1914 COMPILE WINCHELL, A.N., U.S.G.S. BULL. 574
Reference (Deposit): 1931 COMPILE M.B.M.G. BULL. 6
Reference (Deposit): 1965 GEOLMAP LOWELL, W.R., U.S.G.S. MAP I-433
Reference (Deposit): 1972 RECON M.B.M.G. BULL. 85
Reference (Production): MBMG BULL 85, USGS BULL 574
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.
