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  3. Mineral Resource Data System (MRDS)

Knowles Lode Claim

Occurrence in Custer county in South Dakota, United States with commodities Quartz, 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. 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. Workings at the site
  16. Links to other databases
  17. Bibliographic references
  18. General comments
  19. Reporter information

Geologic information

Identification information

Deposit ID 10055673
MRDS ID SD02284
Record type Site
Current site name Knowles Lode Claim

Geographic coordinates

Geographic coordinates: -103.59389, 43.78524 (WGS84)
Elevation 1707
Relative position 0.5 MILE NORTH 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

Custer(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 003S 004E 13 South Dakota

Comments on the location information

  • SW 1/4

Commodities

Commodity Importance
Quartz Primary
Mica Primary
Beryllium Critical Primary

Materials information

Materials Type of material
Beryl Ore
Muscovite Ore
Quartz Ore
Biotite Gangue
Garnet Gangue
Plagioclase Gangue
Tourmaline Gangue

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) Metagraywacke
ListMap

Economic information

Ore body information

  • General form LENTICULAR
    Strike NE
    Dip 30 SE
    Length 70.1M
    Width 6.1M

Economic information about the deposit and operations

Development status Occurrence
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 Frank Beck

Workings at the site

  • Type of workings Surface
    Overall length 9.14M
    Overall width 3.05M

Comments on the workings information

  • SEVEN SMALL PITS AND CUTS, SEVERAL FEET DEEP. QUARTZ CRYSTALS IN ALL SEVEN 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

General comments

Subject category Comment text
Deposit MEDIUM - GRAINED PEGMATITE. QUARTZ CRYSTALS ARE FOUND IN POCKETS ERRATICALLY SCATTERED 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.

External references

Maps centered on this site