Similkameen Placers

Occurrence in Okanogan county in Washington, United States with commodity Gold
Sections on this page
  1. Identification information
  2. Geographic coordinates
  3. Site location context
  4. Geographic areas
  5. Commodities
  6. Materials information
  7. Host and associated rocks
  8. Nearby scientific data
  9. Geologic structures
  10. Controls for ore emplacement
  11. Economic information about the deposit and operations
  12. Links to other databases
  13. Bibliographic references
  14. Reporter information

Geologic information

Identification information

Deposit ID 10095927
MRDS ID SP00290
Record type Site
Current site name Similkameen Placers

Geographic coordinates

Geographic coordinates: -119.44228, 48.9354 (WGS84)

Site location context

Political divisions (FIPS codes)

Okanogan(county)

Washington(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Oroville(quadrangle 1:24,000 scale)

Oroville(quadrangle 1:100,000 scale)

Okanogan(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Okanogan(hydrologic unit)

Upper Columbia(hydrologic accounting unit)

Upper Columbia(hydrologic subregion)

Pacific Northwest(hydrologic region)

Geographic areas

Country State County
United States Washington Okanogan

Comments on the location information

  • ALONG THE SIMILKAMEEN RIVER BETWEEN OROVILLE AND NIGHTHAWK.

Commodities

Commodity Importance
Gold Primary

Materials information

Materials Type of material
Gold Ore
Sand and Gravel Gangue

Host and associated rocks

  • Host or associated Host
    Rock type Unconsolidated Deposit > Sand and Gravel
    Rock unit name Alluvium
    Rock description Alluvium
    Stratigraphic age (youngest) Holocene
    Stratigraphic age (youngest) Holocene

Nearby scientific data

(1) -119.44228, 48.9354

Economic information

Geologic structures

Type of structure Regional
Structure description Deposition Of Heavy Minerals In River Gravels.

Controls for ore emplacement

  • Heavy Mineral Concentration By Stream Action.

Comments on the geologic information

  • DEPOSITS ARE IN RIVER BARS AND LOWER TERRACES OF THE SIMILKAMEEN RIVER (HUNTTING, 1956, P. 188).

Economic information about the deposit and operations

Development status Occurrence
Commodity type Metallic
Deposit size Small
Significant No
Year of last production 1955

Comments on the production information

  • REPORTEDLY $500,000 IN THE FEW YEARS FOLLOWING 1859. INTERMITTENT TO 1955 (HUNTTING, 1956, P. 188).

Reference information

Bibliographic references

  • Deposit

    BETHUNE, G.A., 1891, MINES AND MINERALS OF WASHINGTON- ANNUAL REPORT OF G. A. BETHUNE, FIRST STATE GEOLOGIST: WASHINGTON STATE PRINTER, 122 P.

  • Deposit

    BETHUNE, G.A., 1892, MINES AND MINERALS OF WASHINGTON- SECOND ANNUAL REPORT OF G. A. BETHUNE, STATE GEOLOGIST: WASHINGTON STATE PRINTER, 183 P.

  • Deposit

    DERKEY, R.E.; JOSEPH, N.L.; LASMANIS, R., 1990, METAL MINES OF WASHINGTON-PRELIMINARY REPORT: STATE OF WASHINGTON, DEPARTMENT OF NATURAL RESOURCES, DIVISION OF GEOLOGY AND EARTH RESOURCES OPEN-FILE REPORT 90-18, 577 P.

  • Deposit

    HANDY, F.M., 1916, AN INVESTIGATION OF THE MINERAL DEPOSITS OF NORTHERN OKANOGAN COUNTY: STATE COLLEGE OF WASHINGTON DEPARTMENT OF GEOLOGY BULLETIN 100, 27P.

  • Deposit

    HUNTTING, M. T., 1956, INVENTORY OF WASHINGTON MINERALS-PART II, METALLIC MINERALS: WASHINGTON DIVISION OF MINES AND GEOLOGY BULLETIN 37, V. 1, 428 P.; V. 2, 67 P.

  • Deposit

    UMPLEBY, J.B., 1911, PART I.-- GEOLOGY AND ORE DEPOSITS OF THE MYERS CREEK MINING DISTRICT; PART II. -- GEOLOGY AND ORE DEPOSITS OF THE OROVILLE-NIGHTHAWK MINING DISTRICT: WASHINGTON GEOLOGICAL SURVEY BULLETIN 5, 111 P.

Reporter information

Type Date Name Affiliation Comment
Reporter 01-FEB-1991 Berger, Mary A. U.S. Geological Survey
Updater 01-JUN-1994 Frank, Dave U.S. Geological Survey

Beyond USGS

Supplemental information added by qvyshift.com. Not part of the original USGS MRDS record.