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Dewey Mine

Past Producer in Pennington county in South Dakota, United States with commodities 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 10099361
MRDS ID SD02529
Record type Site
Current site name Dewey Mine

Geographic coordinates

Geographic coordinates: -103.54, 43.89607 (WGS84)
Elevation 1524
Location accuracy 2000(meters)
Relative position 1.5 MILES NORTHWEST OF HARNEY PEAK., Could Be 1 Mi South

Site location context

Political divisions (FIPS codes)

Pennington(county)

South Dakota(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Hill City(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 005E 08;17 NE (17) South Dakota

Comments on the location information

  • ONE SOURCE PLACES THE MINE IN THE NE 1/4, SECTION 17

Commodities

Commodity Importance
Mica Primary
Feldspar Primary

Materials information

Materials Type of material
Feldspar Ore
Mica Ore
Spodumene Ore
Quartz Gangue

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 Plutonic Rock > Pegmatite

Nearby scientific data

(1) -103.54, 43.89607
ListMap

Economic information

Ore body information

  • Strike N 60 E
    Dip 45 NW
    Length 91.44M

Economic information about the deposit and operations

Development status Past Producer
Commodity type Non-metallic
Deposit size Small
Significant No
Year of last production 1943

Mining district

District name Hill City District

Land status

Ownership category National Forest
Area name Black Hills

Ownership information

  • Type Operator
    Owner Harold Duncan And A. V. Burnside
    First year 1943

Comments on the workings information

  • OPEN CUTS AND TWO SHALLOW SHAFTS

Reference information

Bibliographic references

  • Deposit

    USBM INFO CIRC 7707, P. 69

  • Deposit

    SDSMT BULL 18

  • Deposit

    USGS PP 247, P. 99-100

  • Production

    USBM INFO CIRC 7707, P. 69.

General comments

Subject category Comment text
Deposit 10 ACRE PATENTED CLAIM. INTERIOR OF DIKE IS QUARTZ-PERTHITE. SOME SPODUMENE IN EAST END OF DIKE. A MICA ZONE 5 FEET THICK OCCURS ALONG THE HANGING WALL. 20 FT AVERAGE THICKNESS

Reporter information

Type Date Name Affiliation Comment
Reporter 01-NOV-82 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