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
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.
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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