Dacotah Mine

The Dacotah Mine is a lead, zinc, and silver mine located in Cascade county, Montana at an elevation of 6,749 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: Dacotah Mine

Commodity

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

Location

State: Montana
County: Cascade
District: Neihart Mining District

Land Status

Not available

Holdings

Not available

Workings

Type: Unknown

Ownership

Owner Name: Clarke, Frances

Owner Name: Bennett, Carroll

Owner Name: Bennett, Josephine

Production

Not available

Deposit

Record Type: Site
Operation Category: Past Producer
Operation Type: Unknown
Year First Production: 1891
Discovery Year: 1883
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: Little Belt Mountains

Mineral Deposit Model

Not available

Orebody

Form: TABULAR

Structure

Not available

Alterations

Not available

Rocks

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

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

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

Name: Diorite
Role: Associated
Age Type: Associated Rock Unit
Age Young: Neoproterozoic

Analytical Data

Analytical Data: 3.5 OZ/TON AG., 6.5% PB, 10% ZN TRACE AU

Materials

Ore: Galena
Ore: Chalcopyrite
Ore: Sphalerite
Gangue: Pyrite
Gangue: Quartz

Comments

Comment (Reserve-Resource): SAME AS FOR RESERVES AND POTENTIAL RESOURCES

Comment (Production): PRODUCTION 1942-49 MORE THAN 1 MILLION LBS. OF PB, NEARLY 3 MILLION LBS. ZN, APPRECIABLE AG, AND SOME CU AND AU

Comment (Workings): VEIN HAS BEEN EXPLORED ON 4 ADIT LEVELS STOPES EXTEND ALONG DIP FOR 350 FT.

Comment (Deposit): VEIN FOLLOWS A WELL-DEFINED FISSURE IN LIGHT-COLORED GNEISS BUT IT TIGHTENS AND NARROWS WHERE IT ENTERS PINTO DIORITE.

References

Reference (Deposit): ROBERTSON, A.F., 1951, MINES AND MINERAL DEPOSITS (EXCEPT FUELS) CASCADE COUNTY, MONTANA: U.S. BUREAU OF MINES INFO. CIRC. 7589, P. 33-34

Reference (Deposit): WEED, W.H., 1900, GEOLOGY OF THE LITTLE BELT MOUNTAINS, MONT: USGS 20TH ANN. RPT. PT. 3 P. 432-433

Reference (Deposit): KEEFER, W.R., 1972, GEOLOGIC MAP OF THE WEST HALF OF THE NEIHART 15-MINUTE QUADRANGLE, CENTRAL MONTANA: USGS, MISC. GEOL. INV. MAP I-726

Reference (Production): U.S. BUREAU OF MINES INFO. CIRC. 7589

Reference (Reserve-Resource): DMEA 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.