Great Eastern Mine

The Great Eastern Mine is a gold and silver mine located in Deer Lodge county, Montana at an elevation of 6,020 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: Great Eastern Mine
Secondary: Contact Lode Diamond Placer

Commodity

Primary: Gold
Primary: Silver
Secondary: Copper
Secondary: Zinc
Secondary: Stone, Crushed/Broken
Secondary: Dolomite

Location

State: Montana
County: Deer Lodge
District: Lost 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

Type: Underground

Ownership

Owner Name: Lord, Nettie
Home Office: Two Knudson Dr., Yerington, Nv 89447

Owner Name: C. L. Bergloff, Riverside, Ca; L. Thayer, Anaconda, Mt

Owner Name: Thayer, Lyman
Home Office: Rt. 1 Box 264-Ai, Anaconda, Mt 59711.

Production

Not available

Deposit

Record Type: Site
Operation Category: Past Producer
Operation Type: Unknown
Year First Production: 1903
Discovery Year: 1894
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: Flint Creek Range

Mineral Deposit Model

Not available

Orebody

Form: TABULAR, PODS AND LENSES

Structure

Type: R
Description: Mount Powell Batholith

Type: L
Description: Lost Creek Granite Stock

Alterations

Alteration Type: L
Alteration Text: Oxidation

Rocks

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

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

Name: Granite
Role: Associated
Age Type: Associated Rock Unit
Age Young: Pliocene

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

Analytical Data

Analytical Data: PB 0.05 TO 0.16 %SPECIFIC GRAVITY IS 2.85 AND AVERAGE ABSORPTION IS 0.09%
Analytical Data: AU TRACE TO 0.02 OZ/TON
Analytical Data: AG 0.1-0.62 OZ/TON

Materials

Gangue: Quartz
Gangue: Limonite

Comments

Comment (Workings): PRINCIPAL WORKINGS CONSIST OF THREE SHORT ADITS, A SHALLOW SHAFT, AND A SHORT INCLINED WINZE OPEN PIT (SMALL) THE SEMICIRCULAR QUARRY HAS A DIAMETER OF 120 FT AN-D MAXIMUM HEIGHT OF 60 FT.

Comment (Deposit): Discovery Year: DIAMOND PLACER 1894

Comment (Location): DIAMOND PLACER QUARRY AT CONFLUENCE OF LOST CREEK AND TIMBER GULCH ; INFO FROM LAND.ST :(1961)

Comment (Reserve-Resource): THE WHITE COLOR AND HIGH REFLECTIVITY OF THIS MARBLEMAKES IT A GOOD CHOICE FOR USE AS A WHITE AGGREGATE.

Comment (Deposit): First Production Year: DIAMOND PLACER 1903

Comment (Production): PROBABLE THAT TWO SMALL PODS OF ORE WERE MINED ALTHOUGH THERE IS NO DIRECT RECORD OF SHIPMENTS FROM THE PROPERTY(AU AG); LIME FROM KILN WAS USED IN CONSTRUCTION IN BOTH ANACONDA AND DEER LODGE IN THE EARLY 1900'S

Comment (Development): DEVELOPING IN 1978.

References

Reference (Deposit): DEMA RECORDS

Reference (Deposit): MBMG BULL 94, P. 10, 18-19.

Reference (Production): EARLL, 1972, MBMG BULL. 84

Reference (Deposit): MBMG BULL 84, P. 27, 28, 51, 52.

Reference (Deposit): MBMG BULL 109, P. 5.

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.