Upper Granite Prospect

The Upper Granite Prospect is a silver mine located in Granite county, Montana.

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

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.

Site Name

Primary: Upper Granite Prospect

Commodity

Primary: Silver
Secondary: Lead
Secondary: Copper
Secondary: Tungsten

Location

State: Montana
County: Granite
District: Princeton (South Boulder Creek) 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: Occurrence
Operation Type: Unknown
Discovery Year: 1975
Years of Production:
Organization:
Significant: N
Deposit Size: S

Physiography

General Physiographic Area: Rocky Mountain System
Physiographic Province: Northern Rocky Mountains
Physiographic Detail: Flint Creek Range

Mineral Deposit Model

Not available

Orebody

Not available

Structure

Type: R
Description: Royal Stock

Type: L
Description: Mount Powell Batholith

Alterations

Not available

Rocks

Name: Diorite
Role: Associated
Age Type: Host Rock
Age Young: Late Cretaceous

Name: Diorite
Role: Associated
Age Type: Associated Rock
Age Young: Late Cretaceous

Name: Diorite
Role: Associated
Age Type: Associated Rock Unit
Age Young: Late Cretaceous

Analytical Data

Analytical Data: 0.08% WO3
Analytical Data: 4.4 OZ/TON AG, 1.2% PB, 0.40% CU

Materials

Ore: Malachite
Gangue: Quartz

Comments

Comment (Location): 0.75 MI SE FROM THE END OF THE JEEP TRAIL IN DEER LODGE BASIN, AT THE TOP OF THE BASIN RIM. ; INFO FROM LAND.ST :(1971)

Comment (Deposit): A VEIN SYSTEM 20 FT THICK, STRIKES N 47 W AND DIPS 44 SW

Comment (Workings): 5 TRENCHES, 15-40 FT LONG, UPPER MOST TRENCH IS ADJACENT TO AN OLD CAVE SHAFT (SIXTEEN-TO-ONE?)

References

Reference (Deposit): USGS OPEN FILE REP 81-1095, P. 206, FIG. 21, 6

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.