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Magnetic Taconite Mesabi Range 12w

Prospect in St. Louis county in Minnesota, United States with commodities Iron, Water, Free
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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. Mining district
  11. Mineral rights holdings
  12. Land status
  13. Ownership information
  14. Workings at the site
  15. Links to other databases
  16. Bibliographic references
  17. General comments
  18. Reporter information

Geologic information

Identification information

Deposit ID 10268081
MAS/MILS ID 0271370046
Record type Site
Current site name Magnetic Taconite Mesabi Range 12w
Alternate or previous names Range 12w Magnetic Taconite

Geographic coordinates

Point of reference Ore Body
Geographic coordinates: -91.86238, 47.6953 (WGS84)
Elevation 490
Location accuracy 1000(meters)

Site location context

Political divisions (FIPS codes)

St. Louis(county)

Minnesota(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Babbitt NE(quadrangle 1:24,000 scale)

Ely(quadrangle 1:100,000 scale)

Two Harbors(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Rainy Headwaters(hydrologic unit)

Rainy(hydrologic accounting unit)

Rainy(hydrologic subregion)

Souris-Red-Rainy(hydrologic region)

Federal lands

Superior 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 Minnesota St. Louis

Commodities

Commodity Importance
Iron Primary
Water, Free Tertiary

Materials information

Materials Type of material
Calcite Unknown
Cummingtonite Unknown
Hedenbergite Unknown
Magnetite Unknown
Quartz Unknown

Nearby scientific data

Ore Body (1) -91.86238, 47.6953
ListMap

Economic information

Ore body information

  • Strike N30E
    Dip 16S
    Thickness 15M
    Length 10700M
    Width 344M
    Area 1300HA
    Depth to top 7M
    Field Value
    Type of Orebody #1 SEDIMENTARY
    Shape of Orebody #1 TABULAR
    Primary mode of Origin SEDIMENTATION
    Secondary mode of Origin METAMORPHISM
    Primary Ore Control OTHER
    Degree of Wallrock Alter. MODERATE
    Type of Wallrock Alter. #1 UNKNOWN
    Strike And Dip N30E:16S
    Minimum Depth to Top 0
    Avg. Thick. Unconsol. Mat. 7
    Min. Thick. Unconsol. Mat. 0
    Total Surface Area (HA) 1300
    Date of Last Modification 821117

Comments on the geologic information

  • OTHER MINERALS PRESENT INCLUDE FERROHYPERSTHENE & FAYALITE.
  • QUALITY AND QUANTITY OF ORE IS RELATED TO INTENSITY OF CONTACT METAMORPHISM AND DIP OF BIWABIK FORMATION. WIDTH OF MINABLE ORE RANGES FROM 365-1890 M. STRIKE;DIP VARIES FROM N30E;16S IN THE EAST AREA TO N55E;05S IN THE WESTERN PART OF THIS RANGE. LENGTH AND WIDTH REFER TO THE ENTIRE BIWABIK FORMATION OF RANGE 12W. THICKNESS REFERS TO AVERAGE THICKNESS OF THE TACONITE UNITS OF RANGE 12W. HOST ROCK IS METASEDIMENT.

Economic information about the deposit and operations

Operation type Surface
Development status Prospect
Commodity type Both
Significant Yes

Mining district

District name Lake Superior

Mineral rights holdings

Type of mineral rights Unknown

Land status

Ownership category Mixed

Ownership information

  • Type Owner
    Owner Numerous Private Owners
    Home office Minnesota
    Year 1982
  • Type Owner
    Owner State Of Minnesota (State Forest)
  • Type Owner
    Owner U.S. Forest Service

Comments on the ownership information

  • LAND HOLDINGS OF INDIVIDUAL OWNERS NOT DETERMINED.

Comments on the production information

  • MESABI RANGE DISCOVERED AT END OF 19TH CENTURY. MINING ON RANGE 12W BEGAN IN 1951 AT THE PETER MITCHELL MINE (RESERVE MINE) AND IN 1957 AT THE ERIE MINE; THESE PROPERTIES NOT CONSIDERED PART OF THIS DEPOSIT.

Comments on the reserve resource information

  • GRADE REPORTED IN TERMS OF WEIGHT RECOVERY; WT. REC. = 37.6.

Workings at the site

  • Type of workings Surface
    Area 200HA
    Field Value
    MAS Development Schedule # 1
    Mining Record # 1
    Status of Mining Method PROPOSED
    Mining Method OPEN PIT
    Swell Factor .68
    Avg. Overburden Thickness 7
    Primary Material Cover SAND, GRAVEL
    Hardness of Ore M-HARD ROCKS
    Avg. Bench Height (meters) 12
    Max. Pit Slope (degrees) 57
    Capacity 20000
    Capacity Units MT ORE/DAY
    Unit Production Cost 2.03
    Units of Production $/MT ORE
    Operating Days per Year 365
    Operating Shifts per Day 3
    Year of Information 1982

Comments on the workings information

  • AREA DISTURBED IS ESTIMATED BASED ON ASSUMED PIT DIMENSIONS FOR THE NON-PRODUCING AREAS. THIS FIGURE INCLUDES 1100 HECTARES FOR MINE AND MILL SITE, AND TAILINGS DISPOSAL

Reference information

Bibliographic references

  • Reserve-Resource

    # TONNAGES REPORTED BY MARSDEN, NO MATTER WHAT THE UNIT

  • Reserve-Resource

    # DESIGNATION, WERE ASSUMED TO BE IN LONG TONS BECAUSE

  • Reserve-Resource

    # OF THE INCONSISTENCY OF UNITS IN HIS REPORT AND HIS

  • Reserve-Resource

    # EXPLANATION THAT HE MADE NO CONVERSIONS TO METRIC

  • Reserve-Resource

    # TONS BECAUSE OF THE GENERALIZED NATURE OF THE DATA.

  • Deposit

    ARGALL, G.C. EIGHTH INTERNATIONAL MINING PROCESSING

  • Deposit

    CONGRESS-U.S.S.R. WORLD MINING, V. 4, NO. 8, JULY

  • Deposit

    1968, PP. 18-22.

  • Deposit

    BORGESON, O.W., AND K.F. JOPKE. HIBBING TACONITE STORY-

  • Deposit

    MINING. SKILLINGS' MIN. REV., MARCH 8, 1980, PP.

  • Deposit

    12-15.

  • Deposit

    CARLSON, G.N., AND R.A. BAUER. HIBBING TACONITE STORY-

  • Deposit

    PELLETIZING. SKILLINGS' MIN. REV., MARCH 22, 1980,

  • Deposit

    PP. 10-13.

  • Deposit

    EMMONS, W.H., AND F.F. GROUT (EDS.). MINERAL RESOURCES OF

  • Deposit

    MINNESOTA. MINN. GEOLOGICAL SURVEY BULL. 30, 1943, PP. 13-

  • Deposit

    57.

  • Deposit

    HOPPE, R.W. HIBBING TACONITE MASTERS THE COMPLEX. ENG.

  • Deposit

    AND MIN. J., V. 180, SEPTEMBER 1979, PP. 66-75.

  • Deposit

    LONG, D.A. IRON ORE QUALITY CONTROL, PART 1. ENG. AND

  • Deposit

    MIN. J., V. 182, OCTOBER 1981, PP. 77-85.

  • Deposit

    LONG, D.A. IRON ORE QUALITY CONTROL, PART 2. ENG. AND

  • Deposit

    MIN. J., V. 182, DECEMBER 1981, PP. 57-67.

  • Deposit

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

  • Deposit

    RESERVES OF THE UNITED STATES - A PARTIAL SURVEY 1974-

  • Deposit

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

  • Deposit

    A MINERALS AVAILABILITY SYSTEM REPORT. BUMINES OFR

  • Deposit

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

  • Deposit

    MARSDEN, R.W., J.W. EMANUELSON, J.S. OWENS, N.E. WALKER,

  • Deposit

    AND R.F. WERNER. THE MESABI IRON RANGE, MINNESOTA.

  • Deposit

    CH. IN ORE DEPOSITS OF THE UNITED STATES, 1933-1967,

  • Deposit

    V. 1, ED. BY J.D. RIDGE. AIME, NEW YORK, 1968, PP.

  • Deposit

    518-537.

  • Deposit

    MATSON, C.L., AND A.E. ENGLUND. HIBBING TACONITE STORY-

  • Deposit

    ORE DRESSING. SKILLINGS' MIN. REV., MARCH 15, 1980,

  • Deposit

    PP. 8-16.

  • Deposit

    MINERAL RESOURCES RESEARCH CENTER. MINNESOTA MINING

  • Deposit

    DIRECTORY - 1981. ED. BY W.D. TRETHEWAY. UNIV. OF

  • Deposit

    MINN., MINNEAPOLIS, MINN., 1981, 266 PP.

  • Deposit

    RAMPACEK, C. AGGLOMERATION. CH. IN SME MINING ENGINEERING

  • Deposit

    HANDBOOK, ED. BY I.A. GIVEN. SOC. MIN. ENG., AIME,

  • Deposit

    NEW YORK, V. 2, 1973, PP. 27-67 TO 27-75.

  • Deposit

    SKILLINGS' MINING REVIEW. INLAND'S MINORCA MINE REACHES

  • Deposit

    PRODUCTION CAPACITY. JANUARY 6, 1979, PP. 12-44.

  • Deposit

    STRASSBURGER, J.H.(ED.). BLAST FURNACE-THEORY AND PRACTICE.

  • Deposit

    GORDON AND BREACH SCIENCE PUBLISHERS, NEW YORK,

  • Deposit

    1969, PP. 165-219, 279-324.

  • Deposit

    U.S. BUREAU OF MINES. IRON, A MATERIALS SURVEY.

  • Deposit

    IC 8574, 1973, PP. 35-41.

  • Deposit

    WHITE, D.A. THE STRATIGRAPHY AND STRUCTURE OF THE MESABI

  • Deposit

    RANGE, MINNESOTA. MINN. GEOLOGICAL SURVEY BULL 38, 1954,

  • Deposit

    92 PP.

General comments

Subject category Comment text
Deposit DEPOSIT EVALUATED AT EFOC. DEPOSIT OCCURS ON BABBITT AND BABBITT N.E. 7.5 MIN. QUAD. MAPS. MOISTURE CONTENT OF THE ORE IS LESS THAN 2% AND, IN ACCORDANCE WITH THE INDUSTRY PRACTICE, WAS ASSUMED TO BE NEGLIGIBLE. THE PALNT CAPACITY WAS 7300000 MTPY.

Reporter information

Type Date Name Affiliation Comment
Reporter 09-MAR-1995 Tjm 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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