Ingersoll Group

The Ingersoll Group is a lead, silver, and copper mine located in Beaverhead county, Montana at an elevation of 6,900 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

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: Ingersoll Group
Secondary: Ingersol

Commodity

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

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: Surface/Underground

Ownership

Owner Name: Carl Kennedy
Home Office: 2503 34th, Seattle, Wa.
Years: 1972 -

Production

Year: 1941
Time Period: 1918-1941
Material type: AU
Description: Cp_Grade: ^24 Oz/Ton

Deposit

Record Type: Site
Operation Category: Past Producer
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

Not available

Structure

Not available

Alterations

Not available

Rocks

Name: Diorite
Role: Associated
Age Type: Host Rock Unit
Age Young: Mississippian

Name: Diorite
Role: Associated
Age Type: Host Rock
Age Young: Mississippian

Name: Diorite
Role: Associated
Age Type: Associated Rock
Age Young: Pliocene

Analytical Data

Analytical Data: ORE MATERIAL ASSAYED 0.02 OZ AU/TON, 8.7 OZ AG/TON, 0.30% CU, 7.75% PB, AND 5.60% ZN.

Materials

Ore: Cerargyrite
Ore: Bromyrite
Ore: Malachite
Ore: Chalcopyrite
Ore: Sphalerite
Gangue: Calcite
Gangue: Quartz

Comments

Comment (Geology): MADISON LIMESTONE HAS BEEN THRUST OVER TERTIARY ANDESITE IN THIS AREA.

Comment (Deposit): Discovery Year: 1860'S

Comment (Commodity): BROMYRITE (SILVER BROMIDE) REPORTED BUT NOT PROVED POSITIVELY

Comment (Development): THE PROPERTY CONSISTS OF THE BOB INGERSOLL, COLONEL INGERSOLL, AND THE CONTRACT, PATENTED CLAIMS. THE PATENTED SILVER ROSE, OWNED BY MRS. M.E. MATHEWS, IS ASSOCIATED WITH THE GROUP

Comment (Workings): EARLY PRODUCTION WAS FROM OPEN CUTS AND ADITS. IN 1912 P. LONERGRAN SANK A 200-FT. WINZE INTO GRANODIORITE. A 150-FT. ADIT, DRIVEN IN GOUGE, CONNECTS THE WINZE WITH THE SURFACE

Comment (Deposit): OWNER REPORTS DEVELOPMENT WORK IN 1970, BUT INACTIVE IN 1976. ; INFO.SRC : 1 PUB LIT

References

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

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

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

Reference (Deposit): 1979 RECON BERGER, B.R., AND OTHERS, U.S.G.S. O.F. 79-1426

Reference (Production): M.B.M.G. BULL. 85, M.B.M.G. MEM. 15

Reference (Deposit): MBMG BULL 6, P. 38.

Reference (Deposit): MBMG MEM 15, P. 4

Reference (Deposit): MBMG BULL 85, P. 101.

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.