Key East

Occurrence in Ferry county in Washington, United States with commodities Gold, Silver, Copper, Iron
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. Controls for ore emplacement
  11. Economic information about the deposit and operations
  12. Mining district
  13. Links to other databases
  14. Bibliographic references
  15. General comments
  16. Reporter information

Geologic information

Identification information

Deposit ID 10093001
MRDS ID SP00081
Record type Site
Current site name Key East
Alternate or previous names Copper Key

Geographic coordinates

Geographic coordinates: -118.55252, 48.71013 (WGS84)

Site location context

Political divisions (FIPS codes)

Ferry(county)

Washington(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Cooke Mountain(quadrangle 1:24,000 scale)

Republic(quadrangle 1:100,000 scale)

Okanogan(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Sanpoil(hydrologic unit)

Upper Columbia(hydrologic accounting unit)

Upper Columbia(hydrologic subregion)

Pacific Northwest(hydrologic region)

Federal lands

Colville 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 Washington Ferry

Public Land Survey System information

Meridian Township Range Section Fraction State
037N 034E 10 NE4 Washington

Commodities

Commodity Importance
Gold Primary
Silver Primary
Copper Primary
Iron Primary

Materials information

Materials Type of material
Chalcopyrite Ore
Magnetite Ore
Pyrite Ore
Pyrrhotite Ore
Chlorite Gangue
Sericite Gangue

Host and associated rocks

  • Host or associated Associated
    Rock type Volcanic Rock (Aphanitic) > Felsic Volcanic Rock > Rhyodacite
    Stratigraphic age (youngest) Eocene
  • Host or associated Host
    Rock type Sedimentary Rock > Clastic Sedimentary Rock > Argillite
  • Host or associated Host
    Rock type Sedimentary Rock > Clastic Sedimentary Rock > Siltstone
  • Host or associated Host
    Rock type Sedimentary Rock > Carbonate > Limestone
  • Host or associated Host
    Rock type Sedimentary Rock > Chemical Sediment > Chert

Nearby scientific data

(1) -118.55252, 48.71013

Economic information

Controls for ore emplacement

  • Iron-Gold Mineralization Is Manto-Like And Occurs As Replacement Bodies In Limestone. One Of The Bodies Is 100ft. Long, 100ft. Wide, And 25ft. Thick. In Places The Ore Bodies Consist Of Nearly Pure Magnetite (Huntting, 1956, P. 52). Currently (1990), Some Of The Iron Bodies (Magnetite, Pyrite, Pyrrhotite) Are Being Mined For Gold (Tschauder, 1989, P. 245).

Comments on the geologic information

  • THE KEY EAST DEPOSIT IS IN PERMIAN-TRIASSIC LIMESTONE, DOLOMITIC LIMESTONE, ARGILLITE, AND GRAYWACKE. THE ORE BODIES LIE NEXT TO A NETWORK OF DIKES, SILLS, AND INTRUSIVE BODIES OF THE SCATTER CREEK RHYODACITE (MUESSIG, 1967, P. 113).

Economic information about the deposit and operations

Development status Occurrence
Commodity type Metallic
Significant No

Mining district

District name Belcher

Comments on development

  • ECON.COM: SHIPPED 3,249 TONS OF OXIDIZED ORE IN 1907 AND 7,000 TONS OF ORE PRIOR TO 1940 (HUNTTING, 1956, P. 52).

Reference information

Bibliographic references

General comments

Subject category Comment text
Deposit THE KEY EAST DEPOSIT (FORMERLY THE COPPER KEY) AND THE NEARBY KEY WEST DEPOSIT ARE IDENTIFIED AREAS THAT CONTAIN GOLD RESERVES. THESE DEPOSITS ARE ABOUT A MILE NORTHEAST OF THE OVERLOOK MINE, WHICH IS NOW (1990) BEING MINED BY ECHO BAY/CROWN RESOURCES. ; INFO.SRC : 1 PUB LIT

Reporter information

Type Date Name Affiliation Comment
Reporter 01-JAN-1991 Berger, Mary A. U.S. Geological Survey
Updater 01-AUG-1992 Frank, Dave U.S. Geological Survey

Beyond USGS

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