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White Bear Mine

Past Producer in Custer county in South Dakota, United States with commodities Mica, Beryllium, Feldspar
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Sections on this page
  1. Identification information
  2. Geographic coordinates
  3. Site location context
  4. Geographic areas
  5. Public Land Survey System information
  6. Commodities
  7. Materials information
  8. Host and associated rocks
  9. Nearby scientific data
  10. Ore body information
  11. Controls for ore emplacement
  12. Economic information about the deposit and operations
  13. Mining district
  14. Land status
  15. Ownership information
  16. Workings at the site
  17. Links to other databases
  18. Bibliographic references
  19. General comments
  20. Reporter information

Geologic information

Identification information

Deposit ID 10012463
MRDS ID D008106
Record type Site
Current site name White Bear Mine

Geographic coordinates

Geographic coordinates: -103.60139, 43.72052 (WGS84)
Elevation 1646
Location accuracy 500(meters)
Relative position 3 MI SOUTH OF CUSTER, SOUTH DAKOTA.

Site location context

Political divisions (FIPS codes)

Custer(county)

South Dakota(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Cicero Peak(quadrangle 1:24,000 scale)

Mount Rushmore(quadrangle 1:100,000 scale)

Hot Springs(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Middle Cheyenne-Spring(hydrologic unit)

Cheyenne(hydrologic accounting unit)

Cheyenne(hydrologic subregion)

Missouri(hydrologic region)

Federal lands

Black Hills National Forest(National Forest)

National Forest FS(Type of land area)

FS(Federal land areas administered by FS)

Geographic areas

Country State County
United States South Dakota Custer

Public Land Survey System information

Meridian Township Range Section Fraction State
Black Hills 004S 004E 11 NE South Dakota

Commodities

Commodity Importance
Mica Primary
Beryllium Critical Secondary
Feldspar Secondary

Comments on the commodity information

  • 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.

Materials information

Materials Type of material
Beryl Ore
Feldspar Ore
Muscovite Ore
Albite Gangue
Quartz Gangue

Host and associated rocks

  • Host or associated Associated
    Rock type Metamorphic Rock > Gneiss
    Stratigraphic age (youngest) Neoproterozoic
    Stratigraphic age (youngest) Neoproterozoic
  • Host or associated Associated
    Rock type Plutonic Rock > Pegmatite
  • Host or associated Host
    Rock type Metamorphic Rock > Schist > Mica Schist

Nearby scientific data

(1) -103.60139, 43.72052
ListMap

Economic information

Ore body information

  • General form KNOBLIKE AND LENTICULAR
    Strike NORTH
    Dip 60W
    Plunge 48
    Plunge direction S05W
    Length 60.96M
    Width 24.38M

Controls for ore emplacement

  • The Mica Is Found Near The Walls In A Border 1 Ft Thick.

Economic information about the deposit and operations

Development status Past Producer
Commodity type Both
Deposit size Small
Significant No
Discovery year 1935
Discoverer S. T. Gamber
Year of first production 1936

Mining district

District name Custer District

Land status

Ownership category
Area name Black Hills

Ownership information

  • Type Operator
    Owner White Bear Mining Co.
    First year 1943
    Last year 1944
  • Type Owner
    Owner Consolidated Feldspar Corp.
    Home office Trenton, N.J.

Comments on the production information

  • ALL ITEMS NOVEMBER, 1943 - MAY 10, 1944.

Workings at the site

  • Type of workings Surface/Underground
    Area 0.018HA
    Overall depth 7.62M
    Overall length 15.24M
    Overall width 12.19M

Comments on the workings information

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

Reference information

Bibliographic references

  • Deposit

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

  • Deposit

    USGS PP 247, P. 212-214.

  • Production

    USGS PP 247, P. 214.

General comments

Subject category Comment text
Deposit ONE UNPATENTED CLAIM. IT PINCHES OUT AT THE ENDS. 2 ZONES.

Reporter information

Type Date Name Affiliation Comment
Reporter 01-OCT-1981 Barari, Rachel A. U.S. Geological Survey

Beyond USGS

Supplemental information added by qvyshift.com. Not part of the original USGS MRDS record.

Maps centered on this site