Charter Oak Mine

The Charter Oak Mine is a zinc, gold, silver, lead, and copper mine located in Beaverhead county, Montana at an elevation of 6,949 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: Charter Oak Mine

Commodity

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

Location

State: Montana
County: Beaverhead
District: Blue Wing District

Land Status

Not available

Holdings

Not available

Workings

Type: Surface/Underground

Ownership

Owner Name: L. B. Wilkinson
Home Office: Burley, Id.
Years: 1964 -

Production

Not available

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

Type: L
Description: Thrust Fault Trends North And Dips West From 61 To 24 W. Limestone Is Thrust Over Andesite

Alterations

Alteration Type: L
Alteration Text: Oxidation

Rocks

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

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

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

Analytical Data

Analytical Data: CHIP SAMPLE FROM STOPE ASSAYED 2.0% PB, 8.0% ZN, 0.32% CU, 11.4 OZ AG/TON, AND 0.020 OZ AU/TON

Materials

Gangue: Calcite
Gangue: Quartz

Comments

Comment (Deposit): Discovery Year: 1860'S

Comment (Deposit): SOME DEVELOPMENT WORK DONE IN LATE 1950'S ; INFO.SRC : 1 PUB LIT

Comment (Workings): 119 AND 195-FT SHAFTS, 187-FT ADIT, OPEN CUTS.

Comment (Deposit): MARBELIZED ZONE TRENDS N-S. BODIES ARE LOCALIZED NEAR OR ALONG THE NORTH-TRENDING THRUST FAULT.

References

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

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

Reference (Deposit): MBMG MEM 20, P. 3

Reference (Deposit): MBMG BULL 46, P. 3

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

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

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

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

Reference (Deposit): GEACH, R.D., 1972, MINES AND MINERAL DEPOSITS, BEAVERHEAD CO., MT: MT. BUREAU OF MINES AND GEOL. BULL. 85.

Reference (Deposit): MBMG BULL 85.

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