Oka Mine

Plant in Quebec, Canada with commodity Niobium (Columbium)
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. Ownership information
  13. Production statistics
  14. Reserves and resources
  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 10255125
MAS/MILS ID 1220500046
Record type Site
Current site name Oka Mine
Alternate or previous names Oka, St. Lawrence Columbium, Oka Hill

Geographic coordinates

Point of reference Ore Body
Geographic coordinates: -74.03284, 45.49997 (WGS84)
Elevation 1800
Location accuracy 5000(meters)

Site location context

Political divisions (FIPS codes)

Alaska(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Massena OE N(quadrangle 1:100,000 scale)

Ottawa(quadrangle 1:250,000 scale)

Geographic areas

Country State
Canada Quebec

Commodities

Commodity Importance
Niobium (Columbium) Critical Primary

Materials information

Materials Type of material
Apatite Unknown
Calcite Unknown
Pyrochlore Unknown

Nearby scientific data

Ore Body (1) -74.03284, 45.49997

Economic information

Ore body information

  • Length 7.2M
    Width 2.4M
    Field Value
    MAS Matrix # 1
    MAS Column # 1
    Type of Orebody #1 SHEAR ZONE
    Shape of Orebody #1 PIPELIKE
    Primary mode of Origin HYDROTHERMAL
    Primary Ore Control FRACTURING
    Type of Wallrock Alter. #1 INTERM ARGILLIC
    Type of Wallrock Alter. #2 UNKNOWN
    Avg. Thick. Unconsol. Mat. 90
    Min. Thick. Unconsol. Mat. 60
    Date of Last Modification 910613

Economic information about the deposit and operations

Operation type Surface
Development status Plant
Commodity type Metallic
Significant Yes
Discovery year 1952
Mining method Open Pit
Year of first production 1961
Plant type Beneficiation (Mill)
Plant subcategory Flotation
Milling method Flotation

Mineral rights holdings

Type of mineral rights Minerals Only

Land status

Ownership category Private

Ownership information

  • Type Owner
    Owner St. Lawrence Columbium And Metals Corp.
    Interest 100
    Home office Canada
    Year 1987

Production statistics

  • Year 1961
    Description Carbonatite Ore 4500 Mt Ore/Day
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Niobium (Columbium) Niobium (Columbium) 4500mt
  • Year 1962
    Description Carbonatite Ore 9000 Mt Ore/Day
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Niobium (Columbium) Niobium (Columbium) 9000mt
  • Year 1976
    Period 1970-1976
    Description Carbonatite Ore Production 1970-1976 18000 Mt Ore/Day
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Niobium (Columbium) Niobium (Columbium) 18000mt
  • Year 1983
    Description Ore Production For The 1983 Prop. Eval. 1520000 Mt Ore/Year
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Niobium (Columbium) Niobium (Columbium) 1520000mt

Reserves and resources

  • Type In-situ
    Estimate year 1964
    Indicated 57152655mt ore
    Demonstrated 57152655mt ore
    Total resources 57152655mt ore
    Commodity Subtype Grade units Group Importance Year
    Niobium (Columbium) Cb2O5 0.2 wt-pct Niobium (Columbium) Major 1964
  • Type In-situ
    Estimate year 1965
    Indicated 136077750mt ore
    Demonstrated 136077750mt ore
    Total resources 136077750mt ore
    Commodity Subtype Grade units Group Importance Year
    Niobium (Columbium) Cb2O5 0.4 wt-pct Niobium (Columbium) Major 1965
  • Type In-situ
    Estimate year 1967
    Indicated 16329330000mt ore
    Demonstrated 16329330000mt ore
    Total resources 16329330000mt ore
    Commodity Subtype Grade units Group Importance Year
    Niobium (Columbium) Cb2O5 0.25 wt-pct Niobium (Columbium) Major 1967
  • Type In-situ
    Estimate year 1969
    Measured 2267963mt ore
    Demonstrated 2267963mt ore
    Total resources 2267963mt ore
    Commodity Subtype Grade units Group Importance Year
    Niobium (Columbium) Cb2O5 0.48 wt-pct Niobium (Columbium) Major 1969

Comments on the reserve resource information

  • Q-MATRIX 1 COLUMN 1: THE ESTIMATED INSITU ORE USED IN THE 1983 PROPERTY EVALUATION. MINE RECOVERY IS ESTIMATED AT 98% WITH ORE DILUTION AT 7%.
  • 1961-1965 OPEN PIT, 1965-1976 UNDERGROUND/OPEN STOPE, 1977 CLOSED DUE TO LABOR STRIKE, AMPLE RESERVES REMAIN FOR FUTURE OPERATION AS OPEN PIT MINE. DEPOSIT WAS EVALUATED AS GREENFIELD OPERATION.
  • COLUMBIUM ORE RESERVES IN RECOVERABLE TONNAGE, AS LISTED ON 11/83 ETD.

Workings at the site

  • Type of workings Surface
    Field Value
    MAS Development Schedule # 1
    Mining Record # 1
    Status of Mining Method PROPOSED
    Mining Method OPEN PIT
    Primary Material Cover SAND, GRAVEL
    Percentage 100
    Hardness of Ore M-HARD ROCKS
    Capacity 5067
    Capacity Units MT ORE/DAY
    Preprod. Stripping Vol. 4300
    Operating Days per Year 300
    Operating Shifts per Day 3
    Year of Information 1982

Reference information

Bibliographic references

  • Geology

    GOLD, D.P., VALLIE M. AND CHARETTE, J.P., "ECONOMIC GEOLOGY

  • Geology

    AND GEOPHYSICS OF THE OKA ALKALINE COMPLEX, QUEBEC", THE

  • Geology

    CANADIAN MINING AND METALLURGICAL BULLETIN, OCTOBER, 1967,

  • Geology

    PP 1131 TO 1144.

  • Geology

    WOOLLEY, A.R. 1987, ALKALINE ROCKS AND CARBONATITES OF THE

  • Geology

    WORLD. PART I; NORTH AND SOUTH AMERICA, UNIVERCITY OF

  • Geology

    TEXAS PRESS, AUISTON, TEXAS, PP49 TO 50.

  • Reserve-Resource

    "OPENING A NEW SOURCE OF COLUMBIUM RAW MATERIAL", MINING

  • Reserve-Resource

    METHODS IN THE AMERICAS, GORDON AND BEACH, 1964, PP479

  • Reserve-Resource

    TO 486.

  • Reserve-Resource

    "THE PRODUCTION OF PYROCHLORE CONCENTRATE AT ST. LAWRENCE

  • Reserve-Resource

    COLUMBIYM AND METALS CORP.", THE CANADIAN MINING AND

  • Reserve-Resource

    METALLURGICAL BULLETIN, MARCH, 1965, PP281 TO 289.

  • Reserve-Resource

    "STOPING FROM PIT WALLS WHILE DEVELOPING THE UNDERGROUND

  • Reserve-Resource

    MINE AT ST. LAWRENCE COLUMBIUM", THE CONADIAN MINING AND

  • Reserve-Resource

    METALURGICAL BULLETIN, MARCH 1967, PP333 TO 338.

  • Reserve-Resource

    E&MJ, "COLUMBIUM", SEPTEMBER, 1969.

  • Deposit

    BRISKIN, IRA, "NIOBEC CONSIDERS START OF PENTOXIDE

  • Deposit

    PRODUCTION", AMERICAN METALS MARKET, AUGUST 20, 1981, P12.

  • Deposit

    PICKETT, D.E., "ST. LAWRENCE COLUMBIUM AND METALS

  • Deposit

    CORPORATION, MILLING PRACTICE IN CANADA", THE CANADIAN

  • Deposit

    INSTITUTE OF MINING AND METALLURGY, PAGE 332.

  • Deposit

    "TECHNICAL NIOBIUM OXIDE FROM PYROCHLORE", THE CANADIAN

  • Deposit

    MINING AND METALLURGICAL BULLETIN, SEPTEMBER, 1975, PP85

  • Deposit

    TO 90.

General comments

Subject category Comment text
Deposit THE OKA PROPERTY OPERATED FROM 1961 UNTILL ITS COLSUER FOR ECONOMIC REASONS IN 1976. PROPERTY WAS EVALUATED AS A GREENFIELD OPERATION IN THE 1986 COLUMBIUM AVA. STUDY.

Reporter information

Type Date Name Affiliation Comment
Reporter 14-JUN-96 Buckingham, David A. U.S. Bureau of Mines

Beyond USGS

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