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Keystone Quarry

Past Producer in Stevens county in Washington, United States with commodity Magnesite
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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. Ore body information
  10. Economic information about the deposit and operations
  11. Mineral rights holdings
  12. Land status
  13. Ownership information
  14. Production statistics
  15. Links to other databases
  16. Bibliographic references
  17. Reporter information

Geologic information

Identification information

Deposit ID 10228414
MAS/MILS ID 0530650635
Record type Site
Current site name Keystone Quarry

Geographic coordinates

Point of reference Trench
Geographic coordinates: -117.8992, 48.20065 (WGS84)
Elevation 939
Location accuracy 500(meters)

Site location context

Political divisions (FIPS codes)

Stevens(county)

Washington(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Stensgar Mountain(quadrangle 1:24,000 scale)

Chewelah(quadrangle 1:100,000 scale)

Sandpoint(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Colville(hydrologic unit)

Upper Columbia(hydrologic accounting unit)

Upper Columbia(hydrologic subregion)

Pacific Northwest(hydrologic region)

Federal lands

Bureau of Land Management(Bureau of Land Management OR)

Bureau of Land Management OR BLM(Type of land area)

BLM(Federal land areas administered by BLM)

Geographic areas

Country State County
United States Washington Stevens

Public Land Survey System information

Meridian Township Range Section Fraction State
Willamette 031 N 039 E 09 Washington

Commodities

Commodity Importance
Magnesite Primary

Materials information

Materials Type of material
Calcite Unknown
Dolomite Unknown
Magnesite Unknown
Quartz Unknown

Nearby scientific data

Trench (1) Precambrian rocks, undivided
ListMap

Economic information

Ore body information

  • Strike N20E
    Dip 50W
    Thickness 75M
    Length 150M
    Width 75M
    Depth to top 15M
    Field Value
    MAS Matrix # 1
    MAS Column # 1
    Type of Orebody #1 REPLACEMENT
    Shape of Orebody #1 IRREGULAR
    Primary mode of Origin METAMORPHISM
    Primary Ore Control LITHOLOGY
    Degree of Wallrock Alter. MODERATE
    Type of Wallrock Alter. #1 CARBONATE SILIC
    Type of Wallrock Alter. #2 SILICIFICATION
    Type of Wallrock Alter. #3 DOLOMITIZATION
    Strike And Dip N20E:50W
    Minimum Depth to Top 0
    Avg. Thick. Unconsol. Mat. 1
    Min. Thick. Unconsol. Mat. 0
    Date of Last Modification 830620

Economic information about the deposit and operations

Operation type Surface-Underground
Development status Past Producer
Commodity type Metallic
Significant No
Discovery year 1980
Year of first production 1946

Mineral rights holdings

Type of mineral rights Located Claim

Land status

Ownership category Private

Ownership information

  • Type Owner
    Owner Harbison-Walker
    Interest 100
    Home office Ohio
    Year 1983

Production statistics

  • Year 1946
    Description Crude Magnesite Mined 50000 Tonnes
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Magnesite Magnesium 50000mt
  • Year 1947
    Description Crude Magnesite Mined 50000 Tonnes
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Magnesite Magnesium 50000mt
  • Year 1948
    Description Crude Magnesite Mined 50000 Tonnes
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Magnesite Magnesium 50000mt
  • Year 1949
    Description Crude Magnesite Mined 50000 Tonnes
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Magnesite Magnesium 50000mt
  • Year 1950
    Description Crude Magnesite Mined 50000 Tonnes
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Magnesite Magnesium 50000mt
  • Year 1951
    Description Crude Magnesite Mined 50000 Tonnes
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Magnesite Magnesium 50000mt
  • Year 1952
    Description Crude Magnesite Mined 50000 Tonnes
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Magnesite Magnesium 50000mt
  • Year 1953
    Description Crude Magnesite Mined 50000 Tonnes
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Magnesite Magnesium 50000mt
  • Year 1954
    Description Crude Magnesite Mined 50000 Tonnes
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Magnesite Magnesium 50000mt

Comments on the reserve resource information

  • A DEPOSIT REPORT WOULD ALSO INCLUDE RED MARBLE QUARRY AND TURK MAGNESITE DEPOSIT. RESOURCES INCLUDED IN # 0530650640 AND NOT DUPLICATED HERE.
  • THE KEYSTONE DEPOSIT ORIGINALLY CONTAINED 450,000 MT OF HIGH GRADE MAGNESITE IN A TRIANGULAR BODY THAT WAS 150 M IN LENGTH, 75 M AT ITS BASE, AND WAS MINED TO A DEPTH OF 75 M. THESE RESERVES WERE DEPLETED BETWEEN 1946-1954. RESERVES ARE PRESENTLY EXHAUSTED

Reference information

Bibliographic references

  • Deposit

    VALENTINE, G.M., INVENTORY OF WASHINGTON MINERALS, PART 1

  • Deposit

    NON-METALLIC MINERALS, WASH. DIV. OF MINES AND GEOL., BULL

  • Deposit

    37, 1979, 113 PP.

  • Deposit

    WETZEL, N., PROPOSED DEVELOPMENT OF THE STEVENS COUNTY

  • Deposit

    MAGNESITE DEPOSITS, STEVENS COUNTY, WASHINGTON, BUMINES WFOC

  • Deposit

    MAS PROPERTY EVALUATION FILE REPORT, MAGNESITE, UNPUBLISHED

  • Deposit

    JUNE 1983.

Reporter information

Type Date Name Affiliation Comment
Reporter 12-JUL-93 Wetzel, Nicholas U.S. Bureau of Mines

Beyond USGS

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

External references

Maps centered on this site