Pomeroy Mine

The Pomeroy Mine is a copper, silver, lead, and gold mine located in Beaverhead county, Montana at an elevation of 6,719 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: Pomeroy Mine  

State:  Montana

County:  Beaverhead

Elevation: 6,719 Feet (2,048 Meters)

Commodity: Copper, Silver, Lead, Gold

Lat, Long: 45.19889, -112.96611

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 Pomeroy Mine

Pomeroy Mine MRDS details

Site Name

Primary: Pomeroy Mine
Secondary: Brick Pomeroy
Secondary: Silver Buckle
Secondary: Silver Belt


Commodity

Primary: Copper
Primary: Silver
Primary: Lead
Primary: Gold
Secondary: Zinc


Location

State: Montana
County: Beaverhead
District: Blue Wing District


Land Status

Land ownership: Private
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

Type: Underground


Ownership

Owner Name: Spokane National Mines, Inc.
Years: 1967 -


Production

Not available


Deposit

Record Type: Site
Operation Category: Past Producer
Deposit Type: Vein
Operation Type: Unknown
Year First Production: 1865
Discovery Year: 1865
Discovery Method: Unknown
Years of Production:
Organization:
Significant: N
Deposit Size: S


Physiography

General Physiographic Area: Rocky Mountain System
Physiographic Province: Northern Rocky Mountains
Physiographic Detail: Pioneer Mountains


Mineral Deposit Model

Not available


Orebody

Form: LENSES


Structure

Type: L
Description: Limestone Trends N30w, 25 Ne. Possibly Two N Trending Faults.


Alterations

Alteration Type: L
Alteration Text: Oxidation, Gouge


Rocks

Name: Limestone
Role: Host
Age Type: Host Rock
Age Young: Mississippian

Name: Limestone
Role: Host
Age Type: Host Rock Unit
Age Young: Mississippian


Analytical Data

Analytical Data: CHIP SAMPLE ACROSS GOUGE ASSAYED 0.003 OZ AU/TON, 1.25 OZ AG/TON, 0.20% PB, AND 0.40% ZN.


Materials

Gangue: Calcite
Gangue: Quartz


Comments

Comment (Deposit): Discovery Year: 1860'S

Comment (Development): THREE PATENTED CLAIMS, THE SILVER BUCKLE, SILVER BELT, AND QUEBEC. SPOKANE MINES INC. DID A SMALL AMOUNT OF EXPLORATION WORK IN 1966-67.

Comment (Deposit): WELL-DEFINED VEINS IN BLUISH-WHITE LIMESTONE. POSITION OF WORKINGS INDICATES VEIN WAS OFFSET BY TWO NORTH-TRENDING FAULTS WITH LEFT-LATERAL APPARENT DISPLACEMENT

Comment (Workings): INCLINED SHAFT WITH OPEN STOPES WHICH REACH THE SURFACE. THREE OR FOUR SHAFTS IN ALL.

Comment (Location): ACCORDING TO MAPS BY LOWELL AND SHENON, CORRECT LOCATION IS LABLED DEL MONTE MINE ON THE BANNACK QUADRANGLE

Comment (Production): PROPERTY WAS APPARENTLY IDLE FROM 1909-1966.


References

Reference (Deposit): MBMG BULL 6, P. 37.

Reference (Deposit): USGS MGI I-433

Reference (Deposit): BERGER, B.R., AND OTHERS, 1979, GEOCHEM. RECON.-MINING DISTRICTS OF SO. PIONEER MTNS., MONT: U.S.G.S. OPEN-FILE REPORT 79-1426, P. 13.

Reference (Deposit): MBMG BULL 85, P. 103.

Reference (Deposit): 1931 GEOLMAP M.B.M.G. BULL. 6

Reference (Deposit): 1965 GEOLMAP LOWELL, W.R., U.S.G.S. MAP I-433

Reference (Deposit): 1972 COMPILE M.B.M.G. BULL. 85

Reference (Deposit): 1979 RECON BERGER, B.R., U.S.G.S. OPEN-FILE 79-1426

Reference (Production): M.B.M.G. BULL. 85


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.