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  3. Mineral Resource Data System (MRDS)

Friday Lode

Occurrence in Custer county in South Dakota, United States with commodities Feldspar, 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 10010792
MRDS ID D004766
Record type Site
Current site name Friday Lode

Geographic coordinates

Geographic coordinates: -103.65085, 43.77774 (WGS84)
Elevation 1707
Relative position ON RUBY CREEK, ABOUT 2.5 MILES NORTHWEST 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

Berne(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 21 South Dakota

Comments on the location information

  • NEAR CENTER OF SECTION, JUST SOUTH OF THE MINNIE MAY GROUP

Commodities

Commodity Importance
Feldspar Primary
Mica Primary
Beryllium Critical Secondary

Materials information

Materials Type of material
Beryl Ore
Mica Ore
Quartz Gangue
Tourmaline Gangue

Alteration

  • (Local) Feldspar Is Iron Stained

Host and associated rocks

  • Host or associated Associated
    Rock type Plutonic Rock > Pegmatite
    Rock unit name Granite;Pegmatite
    Rock description Granite;Pegmatite
    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) -103.65085, 43.77774
ListMap

Economic information

Ore body information

  • General form KNOB-SHAPED

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 I. W. Lanham And E. E. White

Workings at the site

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

Comments on the workings information

  • TWO OPENCUTS, 10 FEET DEEP AT FACE. SECOND PIT: 10 FEET LONG, 6 FEET WIDE, 8 FEET HIGH AT FACE

Comments on development

  • ECON.COM: FELDSPAR IS GOOD QUALITY

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

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.

External references

Maps centered on this site