Emma Mine

The Emma Mine is a lead, zinc, and manganese mine located in Silver Bow 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: Emma Mine
Secondary: Ancient
Secondary: Black Chief

Commodity

Primary: Lead
Primary: Zinc
Primary: Manganese
Secondary: Gold
Secondary: Silver

Location

State: Montana
County: Silver Bow
District: Butte District

Land Status

Not available

Holdings

Not available

Workings

Not available

Ownership

Owner Name: The Anaconda Co.
Home Office: Hennessy Bldg., Butte, Mt.

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

Mineral Deposit Model

Not available

Orebody

Not available

Structure

Type: R
Description: Boulder Batholith

Alterations

Not available

Rocks

Name: Quartz Monzonite
Role: Associated
Age Type: Host Rock
Age Young: Late Cretaceous

Name: Quartz Monzonite
Role: Associated
Age Type: Associated Rock Unit
Age Young: Late Cretaceous

Name: Quartz Monzonite
Role: Associated
Age Type: Associated Rock
Age Young: Late Cretaceous

Analytical Data

Analytical Data: IN 1922 HIGH GRADE ZN ORE: 21% ZN, 38 OZ/TON AG, 8% PB ON THE 1000 FT LEVEL. MN ORE BODIES OF 41% WAS FOUND.

Materials

Ore: Rhodochrosite
Gangue: Quartz

Comments

Comment (Workings): 1916 THE SHAFT WAS DEWATERED TO THE 800 FT LEVEL. THE ORE BODY AT THAT LEVEL WAS GOOD IN VALUES OF ZN-PB-AG. A SHAFT WAS SUNK ON THE 800 FT LEVEL. A CROSSCUT WAS EXTENDED ON THE 1600 FT LEVEL OF THE ORIGINAL MINE. IN 1920 A 1763 FT CROSSCUT WAS BEING EXTENDED TOWARDS THE OPHIR MINE. 1926 MAIN SHAFT WAS TO THE 1200 FT LEVEL. 1942 1263 FT IN SHAFTS WERE ADDED AND 26459 FT OF DRIFTS. 1943 ANOTHER 25962 FT IN SHAFTS WERE ADDED AND 23095 FT OF DRIFTS.

Comment (Location): E SIDE OF MISSOULA GULCH.

Comment (Production): MN WAS PRODUCED DURING 1934-1957.

Comment (Development): IN 1920 THE OPHIR MINE WAS BOUGHT TO WORK WITH THE EMMA. 1924 THE CZARROMAH CLAIM WAS BOUGHT. ALSO THE MARY LOUISEAND RAILROAD CLAIMS WERE ALSO OPTAINED.

Comment (Deposit): VEIN CROSSES S WASHINGTON ST. IT ENDS IN A HIGH KNOBWHICH OVER LOOKS MISSOULA GULCH. A SMALLER OUTCROP IS BEYOND GULCH.

References

Reference (Production): USGS FILESUSGS-USBM MINERAL YEARBOOKS 1916-1958.

Reference (Deposit): USGS-USBM MINERAL YEARBOOKS 1916-1958.

Reference (Deposit): MBMG BULL 14, P. 39.

Reference (Deposit): USGS PP 74, P. 255-56

Reference (Deposit): USGS FILES

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.