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Etta Spodumene Mine

Past Producer in Pennington county in South Dakota, United States with commodities Feldspar, Mica, Lithium, Tin, Beryllium, Tantalum, Tungsten
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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 10055688
MRDS ID SD02304
Record type Site
Current site name Etta Spodumene Mine
Alternate or previous names Etta Claim and Ferguson Claim

Geographic coordinates

Geographic coordinates: -103.41889, 43.88079 (WGS84)
Elevation 1390
Relative position 1 MILE SOUTHEAST OF KEYSTONE, SOUTH DAKOTA

Site location context

Political divisions (FIPS codes)

Pennington(county)

South Dakota(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Mount Rushmore(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 16 South Dakota

Comments on the location information

  • SW 1/4, NW 1/4, NW 1/4, NW 1/4

Commodities

Commodity Importance
Feldspar Primary
Mica Primary
Lithium Critical Primary
Tin Critical Primary
Beryllium Critical Secondary
Tantalum Critical Secondary
Tungsten Critical Tertiary

Materials information

Materials Type of material
Albite Ore
Beryl Ore
Cassiterite Ore
Muscovite Ore
Plagioclase Ore
Spodumene Ore
Wolframite Ore
Barite Gangue
Biotite Gangue
Bismuth Gangue
Chalcocite Gangue
Chalcopyrite Gangue
Corundum Gangue
Diopside Gangue
Eucryptite Gangue
Galena Gangue
Gold Gangue
Kaolinite Gangue
Lazulite Gangue
Malachite Gangue
Molybdenite Gangue
Olivenite Gangue
Opal Gangue
Petalite Gangue
Pyrite Gangue
Quartz Gangue
Rutile Gangue
Siderite Gangue
Sphalerite Gangue
Stannite Gangue
Torbernite Gangue
Uraninite Gangue
Vivianite Gangue

Host and associated rocks

  • Host or associated Associated
    Rock type Plutonic Rock > Pegmatite
    Rock unit name Pegmatite;Harney Peak Granite
    Rock description Pegmatite;Harney Peak Granite
    Stratigraphic age (youngest) Neoproterozoic
    Stratigraphic age (youngest) Neoproterozoic
    Stratigraphic age (youngest) Neoproterozoic
  • Host or associated Host
    Rock type Metamorphic Rock > Schist
    Rock unit name Schist
    Rock description Schist

Nearby scientific data

(1) -103.41889, 43.88079
ListMap

Economic information

Ore body information

  • General form PIPELIKE, ELLIPTICAL
    Length 76.2M
    Width 53.34M

Comments on the geologic information

  • THE CORE IS MADE OF AN EXTREMELY COARSE MIXTURE OF QUARTZ, MICROCLINE, AND SPODUMENE, COLUMBITE-TANTALITE SPECIMENS ARE AMONG THE FINEST IN THE WORLD.

Economic information about the deposit and operations

Development status Past Producer
Commodity type Both
Deposit size Medium
Significant No
Year of first production 1898

Mining district

District name Keystone District

Land status

Ownership category National Forest
Area name Black Hills National Forest

Ownership information

  • Type Owner-Operator
    Owner Clifford And Cordes

Comments on the production information

  • OVER 1,000 TONS OF FELDSPAR WERE PRODUCED IN 1962.

Comments on the workings information

  • OPEN CUT, GLORY HOLE, UNDERGROUND

Comments on development

  • 2 PATENTED LODE CLAIMS

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

    SCHWARTZ, G.M., 1925, GEOLOGY OF THE ETTA SPODUMENE MINE, ECONOMIC GEOLOGY, VOL. 20, PP. 646-659

  • Deposit

    FISHER, D.J., 1945, PRELIMINARY REPORT ON THE MINERALOGY OF SOME PEGMATITES NEAR CUSTER, SOUTH DAKOTA GEOLOGICAL SURVEY REPORT OF INVESTIGATIONS 50

  • Deposit

    ROBERTS W.L., AND RAPP, GEORGE, 1965, MINERALOGY OF THE BLACK HILLS, SOUTH DAKOTA SCHOOL OF MINES AND TECHNOLOGY BULLETIN 18 / U.S. GEOLOGICAL SURVEY, U.S.BUREAU OF RECLAMATION, AND SOUTH DAKOTA GEOLOGICAL SURVEY, 1975, MINERAL AND WATER RESOURCES OF SOUTH DAKOTA, SOUTH DAKOTA GEOLOGICAL SURVEY BULLETIN 16 / BIENIEWSKI, C.L., AND AGNEW, A.F., 1964, THE MINERAL INDUSTRY OF SOUTH DAKOTA IN 1962, SOUTH DAKOTA GEOLOGICAL SURVEY MINERALS REPORT 10

  • Production

    U.S. BUREAU OF MINES, 1955, BLACK HILLS MINERAL ATLAS, SOUTH DAKOTA: PART 2, BUREAU OF MINES INFORMATION CIRCULAR 7707 / SOUTH DAKOTA GEOLOGICAL SURVEY MINERALS REPORT 10

General comments

Subject category Comment text
Deposit 3 ZONES, GIANT CRYSTALS THROUGHOUT THE PEGMATITE

Reporter information

Type Date Name Affiliation Comment
Reporter 01-AUG-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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