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  3. Mineral Resource Data System (MRDS)

Mesabi Range 25w

Prospect in Itasca county in Minnesota, United States with commodity Iron
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Sections on this page
  1. Identification information
  2. Geographic coordinates
  3. Site location context
  4. Geographic areas
  5. Commodities
  6. Materials information
  7. Nearby scientific data
  8. Ore body information
  9. Economic information about the deposit and operations
  10. Mineral rights holdings
  11. Land status
  12. Links to other databases
  13. Bibliographic references
  14. General comments
  15. Reporter information

Geologic information

Identification information

Deposit ID 10291972
MAS/MILS ID 0270610181
Record type Site
Current site name Mesabi Range 25w

Geographic coordinates

Point of reference Ore Body
Geographic coordinates: -93.50803, 47.27329 (WGS84)
Elevation 402
Location accuracy 1000(meters)

Site location context

Political divisions (FIPS codes)

Itasca(county)

Minnesota(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Cohasset East(quadrangle 1:24,000 scale)

Pokegama Lake(quadrangle 1:100,000 scale)

Hibbing(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Prairie-Willow(hydrologic unit)

Mississippi Headwaters(hydrologic accounting unit)

Mississippi Headwaters(hydrologic subregion)

Upper Mississippi(hydrologic region)

Geographic areas

Country State County
United States Minnesota Itasca

Comments on the location information

  • DEPOSIT EVALUATED AT EFOC. DEPOSIT IS PRESENT IN COHASSET EAST AND BOVEY 7.5 MIN. QUAD. MAPS. LAT/LON IS APPROXIMATE CENTER OF ORE ZONE WITHIN RANGE 25W. OXIBIF ORE IN THIS RANGE REFERS TO "NON-MAGNETIC TACONITE".

Commodities

Commodity Importance
Iron Primary

Materials information

Materials Type of material
Chert Unknown
Goethite Unknown
Hematite Unknown
Quartz Unknown

Nearby scientific data

Ore Body (1) -93.50803, 47.27329
ListMap

Economic information

Ore body information

  • Strike N65E
    Dip 05S
    Thickness 80M
    Length 8550M
    Width 300M
    Depth to top 45M
    Field Value
    Type of Orebody #1 OTHER
    Shape of Orebody #1 TABULAR
    Primary mode of Origin SEDIMENTATION
    Secondary mode of Origin METAMORPHISM
    Primary Ore Control LITHOLOGY
    Degree of Wallrock Alter. MODERATE
    Type of Wallrock Alter. #1 UNKNOWN
    Strike And Dip N65E:05S
    Minimum Depth to Top 0
    Avg. Thick. Unconsol. Mat. 7
    Min. Thick. Unconsol. Mat. 0
    Date of Last Modification 821118

Comments on the geologic information

  • HOST ROCK IS METASEDIMENT.

Economic information about the deposit and operations

Operation type Surface
Development status Prospect
Commodity type Metallic
Significant No

Mineral rights holdings

Type of mineral rights Unknown

Land status

Ownership category Private

Comments on the production information

  • MESABI RANGE DISCOVERED AT END OF 19TH CENTURY.

Comments on the reserve resource information

  • MATRIX 4 REFLECTS OXIBIF RESOURCES; NO GRADES AVAILABLE.

Reference information

Bibliographic references

  • Reserve-Resource

    MARSDEN, R.W. ESTIMATION AND EVALUATION OF THE IRON ORE

  • Reserve-Resource

    RESERVES OF THE UNITED STATES - A PARTIAL SURVEY 1974-

  • Reserve-Resource

    75. IRON ORE RESERVES OF THE MESABI RANGE, MINNESOTA.

  • Reserve-Resource

    A MINERALS AVAILABILITY SYSTEM REPORT. BUMINES

  • Reserve-Resource

    OFR 109-80, 1980, 81 PP.; NTIS PB 80-228984.

General comments

Subject category Comment text
Deposit AVERAGE LENGTH OF ORE ZONE MEASURED ALONG STRIKE BETWEEN RANGE 25W BOUNDARIES. WIDTH OF MINABLE ORE RANGES FROM 95-505 METERS.

Reporter information

Type Date Name Affiliation Comment
Reporter 27-FEB-1984 Marsden U.S. Bureau of Mines

Beyond USGS

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

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