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Ray Prospect

Past Producer in Custer county in South Dakota, United States with commodity Mica
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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. Economic information about the deposit and operations
  12. Mining district
  13. Land status
  14. Ownership information
  15. Links to other databases
  16. Bibliographic references
  17. General comments
  18. Reporter information

Geologic information

Identification information

Deposit ID 10097815
MRDS ID D008115
Record type Site
Current site name Ray Prospect
Alternate or previous names Ray Mica Prospect

Geographic coordinates

Geographic coordinates: -103.63389, 43.69857 (WGS84)
Elevation 1646
Location accuracy 500(meters)
Relative position 5 MILES SOUTHWEST 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

Fourmile(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 15 SW South Dakota

Comments on the location information

  • ABOUT ONE MILE NW OF SANATOR SIDING ON THE CHICAGO, BURLINGTON AND QUINCY RAILROAD.

Commodities

Commodity Importance
Mica Primary

Comments on the commodity information

  • 1 SMALL SHIPMENT WAS 1% NO. 1, 30% NO. 2, AND 63% NO. 2 INFERIOR. BOOKS AVERAGE 4 IN IN MAXIMUM DIMENSION, BUT CAN BE 8 IN IN LENGTH.

Materials information

Materials Type of material
Muscovite Ore
Albite Gangue
Apatite Gangue
Biotite Gangue
Garnet Gangue
Quartz Gangue
Tourmaline Gangue

Analytical data

Result MICA IS DARK RUBY AND IS UNUSUALLY HARD. PART IS BADLY REEVED AND AIR STAINED.

Host and associated rocks

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

Nearby scientific data

(1) -103.63389, 43.69857
ListMap

Economic information

Ore body information

  • General form DIKE
    Strike N15W
    Dip 55SW
    Plunge 65
    Plunge direction SW
    Length 30.48M
    Width 2.44M

Economic information about the deposit and operations

Development status Past Producer
Commodity type Non-metallic
Deposit size Small
Significant No
Discovery year 1943
Discoverer Louis Stratton And Francis Michaud Of Custer, South Dakota

Mining district

District name Custer District

Land status

Ownership category
Area name Black Hills

Ownership information

  • Type Owner
    Owner L. R. Jeffries
    Home office Custer, S.D.
    First year 1944

Comments on the production information

  • FROM 165 TONS OF PEGMATITE.

Comments on the workings information

  • 2 SMALL OPENCUTS.

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. 183.

  • Production

    USBM INFO CIRC 7707, P. 153.

General comments

Subject category Comment text
Deposit A SINGLE, UNPATENTED CLAIM. DIP IS 55-60 SW; MINIMUM LENGTH 100 FT.

Reporter information

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

Beyond USGS

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

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