The Monaghan Molybdenum Prospect is a molybdenum and copper mine located in Beaverhead county, Montana at an elevation of 8,799 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: 8,799 Feet (2,682 Meters)
Commodity: Molybdenum, Copper
Lat, Long: 45.43861, -112.99083
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.
Monaghan Molybdenum Prospect MRDS details
Site Name
Primary: Monaghan Molybdenum Prospect
Commodity
Primary: Molybdenum
Primary: Copper
Location
State: Montana
County: Beaverhead
District: Pioneer Mountains
Land Status
Land ownership: National Forest
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
Not available
Ownership
Owner Name: Dewey Long, F. Monaghan
Home Office: Butte, Mt.
Years: 1943 -
Production
Not available
Deposit
Record Type: Site
Operation Category: Occurrence
Operation Type: 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
Not available
Structure
Not available
Alterations
Not available
Rocks
Name: Quartz Monzonite
Role: Associated
Age Type: Host Rock
Age Young: Late Cretaceous
Name: Quartz Monzonite
Role: Associated
Age Type: Associated Rock Unit
Age Young: Late Cretaceous
Name: Quartz Monzonite
Role: Associated
Age Type: Associated Rock
Age Young: Late Cretaceous
Analytical Data
Analytical Data: DEPOSIT IS FROM 0.08 TO 0.12% MOS2, AND 0.02% CU.
Materials
Ore: Molybdenite
Gangue: Pyrite
Gangue: Quartz
Comments
Comment (Location): 1 MI. DUE N. OF PEAR LAKE IN BEAVERHEAD NF. 45 MI SW OF BUTTE.
Comment (Geology): GEOL.DESC: IN GREISEN. BLEBS, BLOWOUTS OF QUARTZ UP TO 14 FT. WIDE.
Comment (Deposit): LOW GRADE ; INFO.SRC : 1 PUB LIT
Comment (Deposit): MOLYBDENITE OCCURS IN QUARTZ VEINS AND BLEBS AND IN THE GREISEN EITHER AS BUNCHES OR ROSETTES, OR AS DISSEMINATED CRYSTALS.
References
Reference (Deposit): MBMG BULL 85, P. 93.
Reference (Deposit): USGS BULL 1162-E, P. 62.
Reference (Deposit): 1943 RECON CREASEY AND SCHOLZ, U.S.G.S. BULL. 1182-
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.
