1. Mineral Resources
  2. Online Spatial Data
  3. Mineral Resource Data System (MRDS)

Plummer Group

Past Producer in Itasca county in Minnesota, United States with commodities Iron, Water, Free
Map
XML
JSON
KML
B
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. Production statistics
  15. Workings at the site
  16. Links to other databases
  17. Bibliographic references
  18. General comments
  19. Reporter information

Geologic information

Identification information

Deposit ID 10170464
MRDS ID W018561
MAS/MILS ID 0270610005
Record type Site
Current site name Plummer Group
Alternate or previous names Plummer Mine, Uss Plummer, Diamond Mine, Homestead Mine
Related records 10072864

Geographic coordinates

Point of reference Ore Body
Geographic coordinates: -93.39603, 47.32079 (WGS84)
Elevation 427
Location accuracy 10(meters)

Site location context

Political divisions (FIPS codes)

Itasca(county)

Minnesota(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Bovey(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

Commodities

Commodity Importance
Iron Primary
Water, Free Tertiary

Materials information

Materials Type of material
Calcite Unknown
Dolomite Unknown
Goethite Unknown
Graphite Unknown
Hematite Unknown
Kaolinite Unknown
Limonite Unknown
Magnetite Unknown
Pyrite Unknown
Quartz Unknown
Siderite Unknown

Nearby scientific data

Ore Body (1) -93.39603, 47.32079
ListMap

Economic information

Ore body information

  • Thickness 90M
    Area 178HA
    Depth to top 20M
    Field Value
    Type of Orebody #1 SEDIMENTARY
    Shape of Orebody #1 TABULAR
    Type of Orebody #2 REPLACEMENT
    Shape of Orebody #2 MASSIVE
    Primary mode of Origin SEDIMENTATION
    Secondary mode of Origin RESIDUAL CONCENT
    Primary Ore Control BEDDING
    Secondary Ore Control FOLDING
    Degree of Wallrock Alter. UNKNOWN
    Avg. Thick. Unconsol. Mat. 20
    Total Surface Area (HA) 178
    Date of Last Modification 820122

Comments on the geologic information

  • OTHER GANGUE MINERALS INCLUDE MINNESOTAITE, GREENALITE, AND STILPNOMELANE (IRON SILICATES).

Economic information about the deposit and operations

Operation type Surface
Development status Past Producer
Commodity type Metallic
Deposit size Large
Significant Yes
Year of first production 1954

Mining district

District name Lake Superior

Mineral rights holdings

Type of mineral rights Private Lease

Land status

Ownership category Private

Ownership information

  • Type Owner-Operator
    Owner Rhude And Fryberger, Inc.
    ID 2100283
    Interest 100
    Home office Minnesota
    Year 1981

Production statistics

  • Year 1971
    Description 3494000 Mt Crude Ore
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Iron Iron 3494000mt
  • Year 1972
    Description 2439000 Mt Crude Ore
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Iron Iron 2439000mt
  • Year 1973
    Description 3672000 Mt Crude Ore
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Iron Iron 3672000mt
  • Year 1974
    Description 3634000 Mt Crude Ore
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Iron Iron 3634000mt
  • Year 1975
    Description 1585000 Mt Crude Ore
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Iron Iron 158500mt
  • Year 1976
    Description 2443000 Mt Crude Ore
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Iron Iron 2443000mt
  • Year 1977
    Description 1030000 Mt Crude Ore
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Iron Iron 1030000mt
  • Year 1978
    Description 2848000 Mt Crude Ore
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Iron Iron 2848000mt
  • Year 1979
    Description 1871000 Mt Crude Ore
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Iron Iron 1871000mt
  • Year 1980
    Description 974000 Mt Crude Ore
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Iron Iron 974000mt

Comments on the reserve resource information

  • ADIT UPDATE 1993: THE PROPERTY LAST OPERATED IN 1986.

Workings at the site

  • Type of workings Surface
    Area 178HA
    Field Value
    MAS Development Schedule # 1
    Mining Record # 1
    Status of Mining Method ESTIMATE
    Mining Method OPEN PIT
    Percent Waste Rock 40
    Avg. Overburden Thickness 20
    Primary Material Cover SAND, SILT
    Secondary Material Cover SAND, GRAVEL
    Hardness of Ore M-HARD ROCKS
    Avg. Bench Height (meters) 12
    Max. Pit Slope (degrees) 68
    Capacity 2000
    Capacity Units MT ORE/DAY
    Preprod. Stripping Vol. 0
    Unit Production Cost 6.79
    Units of Production $/MT ORE
    Operating Days per Year 130
    Operating Shifts per Day 1
    Year of Information 1981

Comments on the workings information

  • TOTAL LAND HOLDINGS IS 178 HECTARES.

Reference information

Bibliographic references

  • Deposit

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

  • Deposit

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

  • Deposit

    57.

  • Deposit

    ENGINEERING AND MINING JOURNAL. NORTH AMERICAN IRON ORE.

  • Deposit

    V. 175, NO. 11, 1974, P. 139.

  • Deposit

    LEITH, C.K., R.J. LUND, AND A. LEITH. PRE-CAMBRIAN ROCKS OF

  • Deposit

    THE LAKE SUPERIOR REGION. U.S. GEOLOGICAL SURVEY PROF.

  • Deposit

    PAPER 184, 1935, 28 PP.

  • Deposit

    ROYCE, S. GEOLOGY OF THE LAKE SUPERIOR IRON DEPOSITS.

  • Deposit

    THE MIN. CONG. J., MARCH 1936, PP. 16-41.

  • Deposit

    SIKICH, M.G. THE MINERAL INDUSTRY OF MINNESOTA. BUMINES

  • Deposit

    MINERALS YEARBOOK 1954, V. 3, 1957, P. 574.

  • 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 PLUMMER GROUP IS COMPRISED OF 3 USS PROPERTIES LEASED TO RHUDE AND FRYBERGER, INC. THESE ARE: PLUMMER MINE, DIAMOND MINE, AND HOMESTEAD MINE. ORE FROM PLUMMER GROUP WOULD BE PROCESSED AT CANISTEO MILL. POR IS CENTER OF PLUMMER MINE. THE PLANT CAPACITY WAS 260000 MTPY.

Reporter information

Type Date Name Affiliation Comment
Reporter 09-MAR-95 K M C U.S. Bureau of Mines

Beyond USGS

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

Current status (per MSHA)

StatusAbandoned since 10/08/1985
MSHA mine ID2100283
Mine name (MSHA)U S Plummer Or Plummer-Canisteo Mine
Current operatorRhude & Fryberger Inc
Current controller (parent)Rhude James E
Mine typeSurface (Metal / non-metal)

MSHA cross-reference per the original MRDS record. Mine status and operator reflect MSHA's last published Mines export (February 2025); MSHA's public bulk feed has been unavailable since, so this may be out of date. See the Mine Data Retrieval System for current status.

Open MSHA's Mine Data Retrieval System for inspections, accidents, and violations for this mine.

Maps centered on this site