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Thor Lake

Plant in Northwest Territories, Canada with commodities Beryllium, Niobium (Columbium), REE, Tantalum, Uranium, Zirconium
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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. Reserves and resources
  15. Workings at the site
  16. Links to other databases
  17. Bibliographic references
  18. Reporter information

Geologic information

Identification information

Deposit ID 10159976
MAS/MILS ID 1220300028
Record type Site
Current site name Thor Lake

Geographic coordinates

Point of reference Main Entrance
Geographic coordinates: -112.59442, 62.11402 (WGS84)
Elevation 100
Location accuracy 5000(meters)

Site location context

Political divisions (FIPS codes)

Alaska(state)

United States(country)

North America(continent)

Land(continent)

Geographic areas

Country State
Canada Northwest Territories

Commodities

Commodity Importance
Beryllium Critical Tertiary
Niobium (Columbium) Critical Primary
REE Critical Tertiary
Tantalum Critical Primary
Uranium Tertiary
Zirconium Critical Tertiary

Materials information

Materials Type of material
Albite Unknown
Biotite Unknown
Feldspar Unknown
Fluorite Unknown
Hornblende Unknown
Pyroxene Unknown
Quartz Unknown

Nearby scientific data

Main Entrance (1) -112.59442, 62.11402
ListMap

Economic information

Ore body information

  • Field Value
    MAS Matrix # 1
    MAS Column # 1
    Type of Orebody #1 PEGMATITE
    Shape of Orebody #1 TABULAR
    Shape of Orebody #2 TABULAR
    Primary mode of Origin MAGMATIC DIFFER
    Secondary mode of Origin MAGMATIC DIFFER
    Primary Ore Control CONTACT ZONE
    Degree of Wallrock Alter. UNKNOWN
    Type of Wallrock Alter. #1 UNKNOWN
    Date of Last Modification 910624

Comments on the geologic information

  • THE LARGE APHEBIAN GABBROIC TO SYENITIC AND GRANITIC (BLACHFORD LAKE COMPLEX) OF ALKALINE AFFINITY SURROUNDS THE THOR LAKE DEOPOSITS (FLUORITE, LAKE, R., S AND T). THE T- ZONE OF IMMEDIATE ECONOMIC POTENTIAL IS AN AUTOGREISENIZED PEGMATITE LOCTED IN GRANITE AND SYENITE. METASOMATIC COMPLICATED MINERALOGICAL ZONATION HAS OCCURED. ALKALINE ROCKS INTRUDE METASEDIMENTARY SCHISTS.
  • MINERALS OF ECONOMIC VALUE: PEHNACITE, BERTRANDITE, XENOTIME, BASTNAESITE, SYNCHYSITE, PARISITE, ROENTGENITE, MONAZITE, COLUMBITE AND ASHANITE.

Economic information about the deposit and operations

Operation type Surface
Development status Plant
Commodity type Metallic
Significant Yes
Discovery year 1941
Mining method Open Pit
Plant type Beneficiation (Mill)
Plant subcategory Flotation
Milling method Flotation

Mining district

District name Blachford Lake

Mineral rights holdings

Type of mineral rights Minerals Only

Land status

Ownership category Private

Ownership information

  • Type Owner
    Owner Highwood Resources Ltd.
    Interest 70
    Home office Canada
    Year 1989
  • Type Owner
    Owner Hecla Mining Co
    Interest 30
    Home office Canada
    Year 1989

Reserves and resources

  • Type In-situ
    Estimate year 1989
    Indicated 70000000mt ore
    Demonstrated 70000000mt ore
    Total resources 70000000mt ore
    Commodity Subtype Grade units Group Importance Year
    Niobium (Columbium) Cb2O5 0.57 wt-pct Niobium (Columbium) Major 1989
    Tantalum Ta2O5 0.04 wt-pct Tantalum Major 1989
    REE REE 1.99 wt-pct REE Trace 1989
    Zirconium ZrO2 4.73 wt-pct Zirconium Trace 1989
    Beryllium Beo 0.75 wt-pct Beryllium Trace 1989
  • Type In-situ
    Estimate year 1989
    Measured 510000mt ore
    Demonstrated 510000mt ore
    Total resources 510000mt ore
    Commodity Subtype Grade units Group Importance Year
    Niobium (Columbium) Cb2O5 0.58 wt-pct Niobium (Columbium) Major 1989
    REE REE 0.28 wt-pct REE Trace 1989
    REE Y Group 0.17 wt-pct REE Trace 1989
    Beryllium Be 1.1 wt-pct Beryllium Trace 1989
    Beryllium Beo 0.75 wt-pct Beryllium Trace 1989
  • Type In-situ
    Estimate year 1989
    Measured 1250000mt ore
    Demonstrated 1250000mt ore
    Total resources 1250000mt ore
    Commodity Subtype Grade units Group Importance Year
    Niobium (Columbium) Cb2O5 0.46 wt-pct Niobium (Columbium) Major 1989
    REE REE 0.19 wt-pct REE Trace 1989
    REE Y Group 0.09 wt-pct REE Trace 1989
    Beryllium Be 0.62 wt-pct Beryllium Trace 1989
  • Type In-situ
    Estimate year 1989
    Inferred 75000mt ore
    Total resources 75000mt ore
    Commodity Subtype Grade units Group Importance Year
    Niobium (Columbium) Cb2O5 1.5 wt-pct Niobium (Columbium) Major 1989
    Uranium U3O8 0.05 wt-pct Uranium Trace 1989
  • Type In-situ
    Estimate year 1989
    Indicated 1600000mt ore
    Demonstrated 1600000mt ore
    Total resources 1600000mt ore
    Commodity Subtype Grade units Group Importance Year
    Beryllium Be 0.76 wt-pct Beryllium Trace 1989
  • Type In-situ
    Estimate year 1990
    Indicated 450000mt ore
    Demonstrated 450000mt ore
    Total resources 450000mt ore
    Commodity Subtype Grade units Group Importance Year
    Beryllium Be 1.1 wt-pct Beryllium Trace 1990
  • Type In-situ
    Estimate year 1990
    Indicated 1100000mt ore
    Demonstrated 1100000mt ore
    Total resources 1100000mt ore
    Commodity Subtype Grade units Group Importance Year
    Beryllium Be 0.6 wt-pct Beryllium Trace 1990

Comments on the reserve resource information

  • THIS RESERVE/RESOURCE ESTIMATE WAS USED IN THE 1984 PROPERTY EVALUATION.
  • HIGHWOOD RESOURCES HAS ENTERED AN AGREEMENT WITH HECLA MINING OF CA. FOR COMMERCIAL DEVELOPMENT OF BERYLLIUM IN THE T-ZONE OF THE DEPOSIT(MIN JOU 860725).COLUMBIUM MAY BE PRODUCED AS A BYPRODUCT BERYLLIUM GRADE AS BEO RESOURCES IN RECOVERABLE MT REO IS BASTNASITE.

Workings at the site

  • Type of workings Surface
    Area 6000HA
    Field Value
    MAS Development Schedule # 1
    Mining Record # 1
    Status of Mining Method PROPOSED
    Mining Method OPEN PIT
    Percent Waste Rock 75
    Primary Material Cover HARD ROCKS
    Percentage 100
    Hardness of Ore HARD ROCKS
    Avg. Bench Height (meters) 10
    Capacity 2700
    Capacity Units MT ORE/DAY
    Operating Days per Year 260
    Operating Shifts per Day 3
    Year of Information 1982

Comments on the workings information

  • 1970: STAKING, SAMPLING FOR URANIUM POTENTIAL 1977-79: RADON, MAG, AND AIRBORNE SPECTROMETER SURVEYS 1980-81: BE DEPOSIT DISC. BULK SAMPLE COLLECTED. 1982-85: METALLURGICAL TESTING, GRAVITY & BERYLOMETER SRVY 1986-89: BENEFICIATION AND MARKETING RESEARCH, SAMPLING, FEASIBILITY STUDY.

Reference information

Bibliographic references

  • Reserve-Resource

    CANADIAN MINERAL DEPOSITS NOT DEING MINED IN 1989, ENERGY,

  • Reserve-Resource

    MINES AND RESOURCES CANADA, NATIONAL MINERAL INVENTORY,

  • Reserve-Resource

    MINERAL POLICY SECTOR, MINERAL BULLETIN MR 223, NOVEMBER,

  • Reserve-Resource

    1989.

  • Reserve-Resource

    CANADIAN MINES HANDBOOK, 1990-91, HIGHWOOD RESOURCES

  • Reserve-Resource

    LIMITED, P. 224.

  • Reserve-Resource

    MINING ENGINEERING, "THOR LAKE JOINT VENTURE," APRIL 1989,

  • Reserve-Resource

    P. 220.

  • Deposit

    ARGOR EXPLORATION LIMITED, "PROJECT TERRACE-PRELIMINARY

  • Deposit

    METALLURGICAL TESTING REPORT," SECTIONS 1, 2, AND 3.

  • Deposit

    DAVIDSON, A., "THE BLANCHFORD LAKE INTRUSIVE SUITE GEOLO-

  • Deposit

    GICAL SURVEY CANADA PAPER," 78-1A, 1978, PP. 119-127.

  • Deposit

    DAVIDSON, A., "GRANITE STUDIES IN THE SLAVE PROVINCE GEOLO-

  • Deposit

    GICAL SURVEY CANADA PAPER," 72-1A, 1972, PP. 109-115.

  • Deposit

    DEPARTMENT OF ENERGY, MINES & RESOURCES IN CANADA, THOR

  • Deposit

    PROPERTY SURVEY, SEPTEMBER 1981.

  • Deposit

    HIGHWOOD RESOURCES LIMITED, ANNUAL REPORTS, 1980-82.

  • Deposit

    MERRILL LYNCH, STRATEGIC MINERALS IN CANAD, JAN. 1982.

  • Deposit

    NORTHERN MINER (CLIPPING) JULY 22, 1982.

  • Deposit

    PERREAULT, G., MANKER, E.A., "GEOLOGY AND MINERALS OF

  • Deposit

    DEPOSITS," IREM, MERL, 1981.

  • Deposit

    ROSKILL INFORMATION SERVICES, "THE ECONOMICS OF NIOBIUM,"

  • Deposit

    1983, PP. 58-59.

  • Deposit

    METALS & MINERALS ANNUAL REVIEW, 1990

Reporter information

Type Date Name Affiliation Comment
Reporter 14-JUN-1996 Wjd 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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