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Spokane

Occurrence in Okanogan county in Washington, United States with commodities Gold, Silver, Lead, Zinc, Copper
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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. Geologic structures
  11. Controls for ore emplacement
  12. Economic information about the deposit and operations
  13. Links to other databases
  14. Bibliographic references
  15. Reporter information

Geologic information

Identification information

Deposit ID 10056038
MRDS ID SP00291
Record type Site
Current site name Spokane
Alternate or previous names Gold Crown
Related records 10048531, 10204651

Geographic coordinates

Geographic coordinates: -120.15562, 48.37372 (WGS84)

Site location context

Political divisions (FIPS codes)

Okanogan(county)

Washington(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Twisp West(quadrangle 1:24,000 scale)

Twisp(quadrangle 1:100,000 scale)

Concrete(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Methow(hydrologic unit)

Upper Columbia(hydrologic accounting unit)

Upper Columbia(hydrologic subregion)

Pacific Northwest(hydrologic region)

Geographic areas

Country State County
United States Washington Okanogan

Public Land Survey System information

Meridian Township Range Section Fraction State
Willamette 033N 021E 12 Washington

Comments on the location information

  • ON TWISP RIVER ROAD, 2 MILES WEST OF TWISP.

Commodities

Commodity Importance
Gold Primary
Silver Primary
Lead Primary
Zinc Critical Primary
Copper Primary

Materials information

Materials Type of material
Chalcopyrite Ore
Galena Ore
Pyrite Ore
Sphalerite Ore
Calcite Gangue
Quartz Gangue

Host and associated rocks

  • Host or associated Host
    Rock type Volcanic Rock (Aphanitic) > Felsic Volcanic Rock > Dacite
    Rock unit name Newby Group
    Rock description Newby Group
    Stratigraphic age (youngest) Late Cretaceous
    Stratigraphic age (youngest) Late Cretaceous
  • Host or associated Host
    Rock type Volcanic Rock (Aphanitic) > Intermediate Volcanic Rock > Andesite

Nearby scientific data

(1) -120.15562, 48.37372
ListMap

Economic information

Geologic structures

Type of structure Regional
Structure description The Newby Group Was Deposited At Or Near Volcanic Island Arcs.

Controls for ore emplacement

  • An Irregular Quartz-Calcite Vein In Dacite Ranges From A Few Inches To 3 Feet Thick. Ore Minerals Are In Bunches In The Vein (Huntting, 1956, P. 149). The Host Rock Is Silicified Dacite Breccia. Some Mineralization Is Also In A Fault Zone At The Contact With The Alder Creek Stock And In Quartz-Sericite Phyllite That Is On Strike With The Alser Mine (Burnet, 1976).

Comments on the geologic information

  • MINERALIZATION IS IN SILICIFIED DACITE BRECCIA OF THE JURASSIC-CRETACEOUS NEWBY GROUP; IN PLACES THE NEWBY GROUP IS CONTACT METAMORPHOSED BY THE ALDER CREEK STOCK, WHICH WAS DATED AT 137 -+ 4 M.Y. (BURNET, 1976; BUNNING, 1990).

Economic information about the deposit and operations

Development status Occurrence
Commodity type Metallic
Deposit size Small
Significant No
Year of last production 1941

Comments on the production information

  • SMALL AMOUNTS OF ORE WERE SHIPPED IN 1939 AND 1954. SIX TONS SHIPPED IN 1941 CONTAINED 0.40 OZ/TON AU, 20.25 OZ/TON AG, 4.5% ZN, AND 3.8% PB (HUNTTING, 1956, P. 149; BURNET, 1976, TABLE 2).

Reference information

Bibliographic references

  • Deposit

    BANTA, H.E., 1956, DIRECTORY OF WASHINGTON MINING OPERATIONS, 1956: WASHINGTON DIVISION OF MINES AND GEOLOGY INFORMATION CIRCULAR 25, 87 P.

  • Deposit

    BUNNING, B.B., COMPILER, 1990, GEOLOGIC MAP OF THE EAST HALF OF THE TWISP 1:100,000 QUADRANGLE, WASHINGTON: WASHINGTON DIVISION OF GEOLOGY AND EARTH RESOURCES OPEN-FILE REPORT 90-9, 51 P., 1 PL.

  • Deposit

    BURNET, F.W., 1976, FELSIC VOLCANIC ROCKS AND MINERAL DEPOSITS IN THE BUCK MOUNTAIN FORMATION ANDESITES, OKANOGAN COUNTY, WASHINGTON: UNIVERSITY OF WASHINGTON MASTER OF SCIENCE THESIS, 26 P., 1 PL.

  • 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

    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

    LANDES, HENRY; THYNG, W.S.; LYON, D.A.; ROBERTS, MILNOR, 1902, ANNUAL REPORT FOR 1901, IN SIX PARTS; PART-II THE METALLIFEROUS RESOURCES OF WASHINGTON, EXCEPT IRON: WASHINGTON GEOLOGICAL SURVEY, 123 P.

  • Deposit

    WASHINGTON DIVISION OF MINES AND MINING, 1941, DIRECTORY OF WASHINGTON MINING PROPERTIES: WASHINGTON DIVISION OF MINES AND MINING INFORMATION CIRCULAR 7, 74 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.

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