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  3. Mineral Resource Data System (MRDS)

Gilt Edge Mica Mine

Past Producer in Pennington county in South Dakota, United States with commodities Mica, Beryllium
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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. Alteration
  9. Host and associated rocks
  10. Nearby scientific data
  11. Ore body information
  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. Reporter information

Geologic information

Identification information

Deposit ID 10010784
MRDS ID D004755
Record type Site
Current site name Gilt Edge Mica Mine

Geographic coordinates

Geographic coordinates: -103.36695, 43.88385 (WGS84)
Elevation 1317
Relative position 3.6 MILES SOUTHEAST OF KEYSTONE, SOUTH DAKOTA; 0.6 MILE EAST OF THE PHILLIPS & PHYLLIS (WATSON) FELDSPAR MINE

Site location context

Political divisions (FIPS codes)

Pennington(county)

South Dakota(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Rockerville(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 Pennington

Public Land Survey System information

Meridian Township Range Section Fraction State
Black Hills 002S 006E 11 South Dakota

Comments on the location information

  • SE 1/4

Commodities

Commodity Importance
Mica Primary
Beryllium Critical Primary

Materials information

Materials Type of material
Beryl Ore
Muscovite Ore
Microcline Gangue
Quartz Gangue

Alteration

  • (Local) All Minerals Iron Stained

Host and associated rocks

  • Host or associated Associated
    Rock type Plutonic Rock > Pegmatite
    Rock unit name Pegmatite
    Rock description Pegmatite
    Stratigraphic age (youngest) Neoproterozoic
    Stratigraphic age (youngest) Neoproterozoic
    Stratigraphic age (youngest) Neoproterozoic
  • Host or associated Host
    Rock type Plutonic Rock > Pegmatite

Nearby scientific data

(1) -103.36695, 43.88385
ListMap

Economic information

Ore body information

  • General form DIKE
    Thickness 3.66M

Comments on the geologic information

  • NO BERYL WAS OBSERVED, ALTHOUGH PRODUCTION FIGURES FOR BERYL HAVE BEEN RECORDED.

Economic information about the deposit and operations

Development status Past Producer
Commodity type Both
Deposit size Small
Significant No

Mining district

District name Unorganized District

Land status

Ownership category National Forest
Area name Black Hills National Forest

Ownership information

  • Type Owner
    Owner Sam J. Hardin

Workings at the site

  • Type of workings Surface
    Overall length 30.48M

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

  • Production

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

Reporter information

Type Date Name Affiliation Comment
Reporter 01-JUL-1980 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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