The Boulder Cobalt Mine is a gold mine located in Madison county, Montana at an elevation of 9,281 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: 9,281 Feet (2,829 Meters)
Commodity: Gold
Lat, Long: 45.59806, -112.12111
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.
Boulder Cobalt Mine MRDS details
Site Name
Primary: Boulder Cobalt Mine
Commodity
Primary: Gold
Secondary: Silver
Secondary: Copper
Location
State: Montana
County: Madison
District: Tidal Wave District
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
Not available
Production
Not available
Deposit
Record Type: Site
Operation Category: Past Producer
Deposit Type: Vein
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: Tobacco Root Mountains
Mineral Deposit Model
Not available
Orebody
Not available
Structure
Not available
Alterations
Not available
Rocks
Name: Gneiss
Role: Host
Age Type: Host Rock
Age Young: Neoarchean
Analytical Data
Analytical Data: SAMPLES RAN 0.124 TO 2.14 OZ AU, 1.2 TO 0.6 OZ AG, AND 0.12 TO 0.36% CU
Materials
Ore: Silver
Ore: Copper
Ore: Gold
Gangue: Siderite
Gangue: Pyrite
Comments
Comment (Location): 1000 FT SW OF UPPER BOULDER LAKE ; INFO FROM LAND.ST :1975
Comment (Deposit): N TO NW VEINS, SHEARS, ALTERED AREAS IN STEEP DIPPING ZONE 0.25 MI LONG.
Comment (Workings): 5 ADITS, 1 HAS 1,000 FT WORKINGS, OTHERS LESS THAN 100. 1 INCLINE, PITS
Comment (Geology): NEAR GNEISS/AMPHIBOLITE CONTACT
References
Reference (Deposit): USGS MF 1590-C, 1983, TABLE 1, FIG-1
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.
