Blewett Iron

Occurrence in Chelan county in Washington, United States with commodities Iron, Nickel, Chromium
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 10055839
MRDS ID SP00037
Record type Site
Current site name Blewett Iron
Alternate or previous names Blewett, Washington Nickel
Related records 10068216

Geographic coordinates

Geographic coordinates: -120.65923, 47.39232 (WGS84)

Site location context

Political divisions (FIPS codes)

Chelan(county)

Washington(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Blewett(quadrangle 1:24,000 scale)

Wenatchee(quadrangle 1:100,000 scale)

Wenatchee(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Wenatchee(hydrologic unit)

Upper Columbia(hydrologic accounting unit)

Upper Columbia(hydrologic subregion)

Pacific Northwest(hydrologic region)

Federal lands

Okanogan-Wenatchee 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 Chelan

Public Land Survey System information

Meridian Township Range Section Fraction State
022N 017E 13,14 Washington

Comments on the location information

  • ON A PROMINENT RIDGE NORTH OF SHASER CREEK AT ITS JUNCTION WITH PESHASTIN CREEK

Commodities

Commodity Importance
Iron Primary
Nickel Critical Primary
Chromium Critical Primary

Materials information

Materials Type of material
Chromite Ore
Hematite Ore
Magnetite Ore
Serpentine Gangue

Host and associated rocks

  • Host or associated Host
    Rock type Metamorphic Rock > Serpentinite
    Stratigraphic age (youngest) Late Jurassic

Nearby scientific data

(1) -120.65923, 47.39232

Economic information

Controls for ore emplacement

  • The Blewett Iron Deposits Are Laterite Deposits. Many Of The Laterites Were Eroded From Their Nearby Source Area And Deposited Form A Sequence Of Conglomerates And Fine-Grained, Iron-Rich Beds. The Iron And Chromium Were From Iron In Silicate Minerals, Magnetite-Hematite, And Chromite Weathered From The Serpentinite. Nickel Is From Silicates Released During Laterization (Deep Weathering) Of The Serpentinite (Broughton, 1943, P. 10).

Comments on the geologic information

  • THE LATERITES WERE TRANSPORTED AND DEPOSITED BENEATH OR AS BASAL BEDS OF THE EOCENE SWAUK FORMATION. LAMEY(1950, P.1) TENTATIVELY INTERPRETS THE CONGLOMERATIC IRON BEDS AS LANDSLIDE DEBRIS OR MUDFLOW DEPOSITS

Economic information about the deposit and operations

Development status Occurrence
Commodity type Metallic
Significant No

Mining district

District name Blewett

Comments on development

  • ECON.COM: THE BLEWETT IRON DEPOSIT HAS NOT PRODUCED BUT HAS BEEN EXTENSIVELY EVALUATED AS AN IRON RESOURCE (HUNTTING, 1956, P. 194).

Reference information

Bibliographic references

General comments

Subject category Comment text
Deposit IRON DEPOSITS OF THE BLEWETT AREA WERE EVALUATED IN THE 1940'S BY THE WASHINGTON DIVISION OF GEOLOGY. THIS WAS FOLLOWED BY EXTENSIVE DRILLING BY THE U. S. BUREAU OF MINES (10 HOLES, 2395 FT.) AND METALLURGICAL TESTING. (SEE REFERENCES FOR SPECIFIC REPORTS.) THIS EVALUATION SHOWED RESERVES OF 46,000 TONS AT A GRADE OF 0.88% NI, 2.5% CR2 O3, 32% FE, AND 8,000,000 TONS AT A GRADE OF 0.39% NI, 0.85% CR2 O3, AND 11.53% FE (HUNTTING, 1956, P. 194).

Reporter information

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

Beyond USGS

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