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  2. Online Spatial Data
  3. Mineral Resource Data System (MRDS)

Portland 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. Controls for ore emplacement
  10. Economic information about the deposit and operations
  11. Mining district
  12. Land status
  13. Ownership information
  14. Links to other databases
  15. Bibliographic references
  16. General comments
  17. Reporter information

Geologic information

Identification information

Deposit ID 10055453
MRDS ID SD02005
Record type Site
Current site name Portland Mine

Geographic coordinates

Geographic coordinates: -103.84447, 44.34413 (WGS84)
Elevation 1951
Relative position JUST WEST OF 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)

Redwater(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

  • CENTER OF THE NORTH EDGE OF THE SECTION

Commodities

Commodity Importance
Gold Primary
Silver Secondary

Materials information

Materials Type of material
Gold Ore
Silver Ore
Dolomite Gangue
Pyrite Gangue

Nearby scientific data

(1) -103.84447, 44.34413
ListMap

Economic information

Controls for ore emplacement

  • Series Of Major Fractures

Economic information about the deposit and operations

Development status Past Producer
Commodity type Metallic
Deposit size Small
Significant No
Discovery year 1877

Mining district

District name Bald Mountain (Portland) 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 production information

  • SEE RECORD 'BALD MOUNTAIN MINING COMPANY'

Comments on the workings information

  • EXTENSIVE HAULAGE TUNNEL SYSTEM

Comments on development

  • THIRTY CLAIMS

Reference information

Bibliographic references

  • Deposit

    U.S. GEOLOGICAL SURVEY, U.S. BUREAU OF RECLAMATION, SOUTH DAKOTA GEOLOGICAL SURVEY, 1975 , MINERAL AND WATER RESOURCES OF SOUTH DAKOTA, SOUTH DAKOTA GEOLOGICAL SURVEY BULLETIN 16

  • Deposit

    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 FRACTURES RUN N 25 - 40 E

Reporter information

Type Date Name Affiliation Comment
Reporter 01-JAN-1979 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