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  3. Mineral Resource Data System (MRDS)

Mark Twain Mine

Past Producer in Lawrence county in South Dakota, United States with commodities Gold, Silver
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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. Nearby scientific data
  9. Ore body information
  10. Controls for ore emplacement
  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 10055521
MRDS ID SD02086
Record type Site
Current site name Mark Twain Mine

Geographic coordinates

Geographic coordinates: -103.8378, 44.33968 (WGS84)
Elevation 1914
Relative position AT TROJAN, SOUTH DAKOTA

Site location context

Political divisions (FIPS codes)

Lawrence(county)

South Dakota(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Lead(quadrangle 1:24,000 scale)

Rapid City(quadrangle 1:100,000 scale)

Rapid City(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Lower Belle Fourche(hydrologic unit)

Belle Fourche(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 Lawrence

Public Land Survey System information

Meridian Township Range Section Fraction State
Black Hills 004N 002E 02 South Dakota

Comments on the location information

  • NE 1/4

Commodities

Commodity Importance
Gold Primary
Silver Primary

Materials information

Materials Type of material
Gold Ore
Silver Ore

Nearby scientific data

(1) -103.8378, 44.33968
ListMap

Economic information

Ore body information

  • Strike NE
    Dip 90
    Thickness 0.91M

Controls for ore emplacement

  • Upper Ore Horizon: In Northeast Trending Vertical Fractures In Dolomite.

Economic information about the deposit and operations

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

Mining district

District name Bald Mountain District

Land status

Ownership category National Forest
Area name Black Hills National Forest

Ownership information

  • Type Owner-Operator
    Owner Bald Mountain Mining Co.

Comments on the workings information

  • NEW CLINTON MINE OF THE BALD MOUNTAIN COMPANY EXTENDS UNDER THESE WORKINGS

Comments on development

  • NOW PART OF THE PORTLAND MINE

Reference information

Bibliographic references

  • Deposit

    US BUREAU OF MINES, 1954 , BLACK HILLS MINERAL ATLAS, SOUTH DAKOTA: PART I, BUREAU OF MINES INFORMATION CIRCULAR 7688

  • Production

    US BUREAU OF MINES, 1954 , BLACK HILLS MINERAL ATLAS, SOUTH DAKOTA: PART I, BUREAU OF MINES INFORMATION CIRCULAR 7688 .

General comments

Subject category Comment text
Deposit 2 - 3 FT BEDS OF DOLOMITE ARE SEPARATED BY 5 FT OF SHALE.

Reporter information

Type Date Name Affiliation Comment
Reporter 01-AUG-1970 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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