Bryant

The Bryant is a silver and manganese 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: Bryant
Secondary: Lady Bryant
Secondary: Seal Rock

Commodity

Primary: Silver
Primary: Manganese

Location

State: Montana
County: Granite
District: Philipsburg (Granite-Flint Creek) District

Land Status

Not available

Holdings

Not available

Workings

Not available

Ownership

Owner Name: Philipsburg Mining Co.

Production

Not available

Deposit

Record Type: Site
Operation Category: Past Producer
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: Flint Creek Range

Mineral Deposit Model

Not available

Orebody

Form: CELLULAR, CAVERNOUS

Structure

Type: R
Description: Philipsburg Batholith

Type: L
Description: Philipsburg Anticline, Philipsburg Overthrust

Alterations

Alteration Type: L
Alteration Text: Oxidized

Rocks

Name: Limestone
Role: Host
Age Type: Host Rock
Age Young: Late Cambrian

Name: Limestone
Role: Host
Age Type: Host Rock Unit
Age Young: Late Cambrian

Analytical Data

Analytical Data: 45% MN AND NOT MORE THAN 17% SIO2, AVERAGE MN IS 38%

Materials

Ore: Wad
Ore: Silver
Ore: Psilomelane
Gangue: Quartz

Comments

Comment (Location): ON THE DIVIDE BETWEEN CAMP CREEK AND CLIFF GULCH.

Comment (Production): 13000 TONS OF MN ORE WAS PRODUCED FROM 1918-1922.

Comment (Deposit): ORE BODY RANGES FROM 50-150 FT IN STOPE LENGTH AND TO BE 40 FT WIDE IN ONE PLACE. ORE CONSISTS OF CLOSELY PACKED NODULES THAT RANGE FROM 1 IN TO A FT OR MORE IN DIAMETER.

Comment (Workings): LARGE PIT WITH A SHAFT ALONG SIDE, DRIFTS, STOPES.

References

Reference (Deposit): USGS BULL 725, P. 166-67.

Reference (Deposit): USGS BULL 1237, P. 31-57, PLATES

Reference (Production): USGS BULL 725, P. 166

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.