1. Mineral Resources
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  3. Mineral Resource Data System (MRDS)

Cuyuna Reserve

Occurrence in Crow Wing 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. 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. Mining district
  12. Mineral rights holdings
  13. Land status
  14. Ownership information
  15. Reserves and resources
  16. Workings at the site
  17. Links to other databases
  18. Bibliographic references
  19. General comments
  20. Reporter information

Geologic information

Identification information

Deposit ID 10268016
MRDS ID W018357
MAS/MILS ID 0270350128
Record type Site
Current site name Cuyuna Reserve
Alternate or previous names Whiteside Cuyuna
Related records 10072705, 10270869

Geographic coordinates

Point of reference Ore Body
Geographic coordinates: -94.13355, 46.36669 (WGS84)
Elevation 375
Location accuracy 100(meters)

Site location context

Political divisions (FIPS codes)

Crow Wing(county)

Minnesota(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Brainerd(quadrangle 1:24,000 scale)

Brainerd(quadrangle 1:100,000 scale)

Brainerd(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Elk-Nokasippi(hydrologic unit)

Mississippi Headwaters(hydrologic accounting unit)

Mississippi Headwaters(hydrologic subregion)

Upper Mississippi(hydrologic region)

Geographic areas

Country State County
United States Minnesota Crow Wing

Public Land Survey System information

Meridian Township Range Section Fraction State
4th Principal 045 N 030 W 21 SWNE Minnesota

Commodities

Commodity Importance
Iron Primary

Materials information

Materials Type of material
Chert Unknown
Hematite Unknown
Limonite Unknown
Magnetite Unknown

Nearby scientific data

Ore Body (1) -94.13355, 46.36669
ListMap

Economic information

Ore body information

  • Strike N60E
    Dip 60N
    Thickness 37M
    Length 465M
    Width 20M
    Area 50HA
    Depth to top 36M
    Field Value
    Type of Orebody #1 SEDIMENTARY
    Shape of Orebody #1 MASSIVE
    Shape of Orebody #2 TABULAR
    Primary mode of Origin OXIDATION
    Secondary mode of Origin RESIDUAL CONCENT
    Primary Ore Control FOLDING
    Secondary Ore Control FAULTING
    Degree of Wallrock Alter. MODERATE
    Type of Wallrock Alter. #1 INTERM ARGILLIC
    Strike And Dip N60E:60N
    Minimum Depth to Top 35
    Avg. Thick. Unconsol. Mat. 36
    Min. Thick. Unconsol. Mat. 35
    Total Surface Area (HA) 50
    Date of Last Modification 810904

Economic information about the deposit and operations

Development status Occurrence
Commodity type Metallic
Significant No
Discovery year 1915

Mining district

District name Cuyuna Range

Mineral rights holdings

Type of mineral rights Fee Ownership

Land status

Ownership category Private

Ownership information

  • Type Owner
    Owner R. J Hartley
    Interest 100
    Year 1981

Comments on the ownership information

  • LISTED AS FEE OWNER IN MINN MNG DIRECTORY 1981

Reserves and resources

  • Type In-situ
    Estimate year 1981
    Indicated 1260000000mt ore
    Inferred 1260000000mt ore
    Total resources 2520000000mt ore
    Commodity Subtype Grade units Group Importance Year
    Iron Fe 50 wt-pct Iron Major 1981

Comments on the reserve resource information

  • DATE OF Q SHOWS 1981, SAME AS 1980 BECAUSE PROPERTY IS A PROSPECT RC1=M1C1. MARGINAL DEPOSIT RC4=M9C4 RESERVES COLUMN 1 ARE SUMMED IN MATRIX 9 COLUMN 4 MARGINAL DEPOSIT RESERVES IN Q-MATRIX 2 ARE FROM THE SKILLINGS MINNESOTA MINING DIRECTORY 1992 FOR THE ADIT UPDATE 1993. THE GRADE WAS ASSUMED THE SAME AS THE PEFR GRADE. NO PRODUCTION IS RECORDED FOR THIS PROPERTY.

Workings at the site

  • Type of workings Surface
    Area 38HA
    Field Value
    MAS Development Schedule # 1
    Mining Record # 1
    Status of Mining Method PROPOSED
    Mining Method OPEN PIT
    Swell Factor .87
    Percent Waste Rock 82.2
    Avg. Overburden Thickness 36
    Primary Material Cover SAND, SILT
    Hardness of Ore HARDPAN
    Avg. Bench Height (meters) 6
    Max. Pit Slope (degrees) 22
    Capacity 700
    Capacity Units MT ORE/DAY
    Preprod. Stripping Vol. 861
    Unit Production Cost 12.02
    Units of Production $/MT ORE
    Operating Days per Year 260
    Operating Shifts per Day 3
    Year of Information 1981

Comments on other economic factors

  • DEVELOPMENT SCHEDULE SHOWS 4 YEARS OF PREPRODUCTION ONLY BECAUSE EVALUATION IS BASED ON 1980. ACTUAL PREPRODUCTION WOULD BE ONLY 2 YEARS.

Reference information

Bibliographic references

  • Deposit

    LEWIS, WALTER E., HEISING, LEONARD F., PENNINGTON, JAMES W.,

  • Deposit

    PRASKY, CHARLES; INVESTIGATIONS OF CUYUNA IRON-RANGE

  • Deposit

    MANGANESE DEPOSITS, CROW WING COUNTY, MINN. BUREAU OF

  • Deposit

    MINES, INVESTIGATIONS 5400 1958

  • Geology

    MARSDEN RALPH W, CUYUNA DISTRICT, PAGE 227 OF GEOLOGY OF

  • Geology

    MINNESOTA, A CENTENNIAL VOLUME, EDS. SIMS & MOREY 1972

  • Deposit

    SCHMIDT, ROBERT GORDON, GEOLOGY AND ORE DEPOSITS OF THE

  • Deposit

    CUYUNA NORTH RANGE MINNESOTA, GEOLOGICAL SURVEY

  • Deposit

    PROFESSIONAL PAPER 407 1963

  • Names

    LAKE SUPERIOR IRON ORES, MINING DIRECTORY AND STATISTICAL

  • Names

    RECORD, SECOND EDITION 1952, LAKE SUPERIOR IRON ORE

  • Names

    ASSOCIATION, CLEVELAND

  • Reserve-Resource

    MINNESOTA MINING DIRECTORY 1981 TRETHEWEY, WM. D. EDITOR

  • Reserve-Resource

    UNIV. OF MINN. MINERAL RESOURCES RESEARCH CENTER

General comments

Subject category Comment text
Deposit THE CAPACITY OF THE PLANT WAS 182000 MTPY.

Reporter information

Type Date Name Affiliation Comment
Reporter 09-MAR-95 Soper, J. 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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