Flagg Placer

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

Name: Flagg Placer  

State:  Montana

County:  Jefferson

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.


Satelite image of the Flagg Placer

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

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.