White Bear Mine

The White Bear Mine is a mica mine located in Custer county, South Dakota at an elevation of 5,400 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

Name: White Bear Mine  

State:  South Dakota

County:  Custer

Elevation: 5,400 Feet (1,646 Meters)

Commodity: Mica

Lat, Long: 43.72056, -103.60083

Map: View on Google Maps

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.


Satelite image of the White Bear Mine

White Bear Mine MRDS details

Site Name

Primary: White Bear Mine


Commodity

Primary: Mica
Secondary: Beryllium
Secondary: Feldspar


Location

State: South Dakota
County: Custer
District: Custer District


Land Status

Administrative Organization: Black Hills


Holdings

Not available


Workings

Type: Surface/Underground


Ownership

Owner Name: Consolidated Feldspar Corp.
Home Office: Trenton, N.J.

Owner Name: White Bear Mining Co.
Years: 1943 - 1944


Production

Not available


Deposit

Record Type: Site
Operation Category: Past Producer
Operation Type: Unknown
Year First Production: 1936
Discovery Year: 1935
Years of Production:
Organization:
Significant: N
Deposit Size: S


Physiography

General Physiographic Area: Interior Plains
Physiographic Province: Great Plains Province
Physiographic Section: Black Hills


Mineral Deposit Model

Not available


Orebody

Form: KNOBLIKE AND LENTICULAR


Structure

Not available


Alterations

Not available


Rocks

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

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


Analytical Data

Not available


Materials

Ore: Beryl
Ore: Feldspar
Ore: Muscovite
Gangue: Quartz
Gangue: Albite


Comments

Comment (Commodity): MICA IS MEDIUM-DARK-RUBY AND IS MODERATELY AIR STAINED. SOME IS SOFT, WAVY AND HEAVILY AIR STAINED. THE LARGER BOOKS ARE GENERALLY 'A' OR 'FISH' MICA, SMALLER BOOKS ARE FLAT AND CLEAR.

Comment (Production): ALL ITEMS NOVEMBER, 1943 - MAY 10, 1944.

Comment (Deposit): ONE UNPATENTED CLAIM. IT PINCHES OUT AT THE ENDS. 2 ZONES.

Comment (Workings): THERE ARE 2 SMALLER CUTS, A 76 FT INCLINED SHAFT (ALTITUDE 5414 FT, 59 DEG INCLINATION) WITH SEVERAL DRIFTS AND SLOPES.


References

Reference (Deposit): U.S. BUREAU OF MINES, 1955, BLACK HILLS MINERAL ATLAS, SOUTH DAKOTA: PART 2, BUREAU OF MINES INFORMATION CIRCULAR 7707.

Reference (Deposit): USGS PP 247, P. 212-214.

Reference (Production): USGS PP 247, P. 214.


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