The Flagg Placer is a silica mine located in Jefferson county, Montana at an elevation of 6,781 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: 6,781 Feet (2,067 Meters)
Commodity: Silica
Lat, Long: 45.95333, -112.41333
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.
Flagg Placer MRDS details
Site Name
Primary: Flagg Placer
Secondary: Flag
Commodity
Primary: Silica
Secondary: Gold
Tertiary: REE
Tertiary: Zinc
Location
State: Montana
County: Jefferson
District: Homestake 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: Placer
Operation Type: Unknown
Discovery Method: 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
Not available
Alterations
Not available
Rocks
Name: Quartz Monzonite
Role: Associated
Age Type: Host Rock
Age Young: Holocene
Name: Quartz Monzonite
Role: Associated
Age Type: Associated Rock
Age Young: Late Cretaceous
Analytical Data
Not available
Materials
Ore: Quartz
Ore: Gold
Gangue: Pyrite
Unknown: Sphalerite
Unknown: Allanite
Comments
Comment (Development): PLACER WAS WORKED IN SUMMER, 1959. MATERIAL WAS TO BE SENT TO ANACONDA SMELTER.
Comment (Geology): ALLANITE, CERIUM EPIDOTE, OCCURS ABUNDANTLY AS SMALL GRAINS SCATTERED IN GRAVEL.
Comment (Commodity): QUARTZ USED AS SILICA FLUX
References
Reference (Deposit): CONSV. DIV. COMP. DATE, 12-18-1961
Reference (Deposit): 1960 RECON ROBY, ETAL, MT BUREAU OF MINES AND GEOL. BULL 1
Reference (Deposit): MBMG BULL 16.
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.
