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Eruption Lode

Past Producer in Custer county in South Dakota, United States with commodities Beryllium, Lithium, Mica, 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. 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 10055736
MRDS ID SD02468
Record type Site
Current site name Eruption Lode
Alternate or previous names Volcano Lode

Geographic coordinates

Geographic coordinates: -103.69668, 43.72496 (WGS84)
Elevation 1670
Location accuracy 250(meters)
Relative position Within 1/8 Mi Either N Or S

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)

Angostura Reservoir(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 06 South Dakota

Comments on the location information

  • WEST EDGE OF SEC. 6 JUST NORTH OF THE SOUTHWEST CORNER OF THE SECTION

Commodities

Commodity Importance
Beryllium Critical Primary
Lithium Critical Primary
Mica Primary
Feldspar Primary

Materials information

Materials Type of material
Amblygonite Ore
Beryl Ore
Feldspar Ore
Muscovite Ore
Quartz Gangue
Tourmaline Gangue

Analytical data

Result PEGMATITE CONTAINS 1.5 % BE, 2.2 - 2.9 % MICA, AND 2.2 - 2.9 % AMBLYGONITE

Host and associated rocks

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

Nearby scientific data

(1) -103.69668, 43.72496
ListMap

Economic information

Ore body information

  • General form DIKE-LIKE
    Strike NW
    Dip 90
    Length 91.44M
    Width 9.14M

Economic information about the deposit and operations

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

Mining district

District name Custer District

Land status

Ownership category National Forest
Area name Black Hills National Forest

Ownership information

  • Type Owner
    Owner Fenwick, T. J.
    Home office Custer, South Dakota

Comments on the workings information

  • THREE SMALL CUTS

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

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

General comments

Subject category Comment text
Deposit UNPATENTED CLAIM

Reporter information

Type Date Name Affiliation Comment
Reporter 01-APR-81 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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