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Nemegosenda

Plant in Ontario, Canada with commodity Niobium (Columbium)
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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 10181613
MAS/MILS ID 1220400116
Record type Site
Current site name Nemegosenda

Geographic coordinates

Point of reference Ore Body
Geographic coordinates: -83.08315, 48.00001 (WGS84)
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 Ontario

Commodities

Commodity Importance
Niobium (Columbium) Critical Primary

Materials information

Materials Type of material
Augite Unknown
Orthoclase Unknown
Pyrochlore Unknown

Nearby scientific data

Ore Body (1) -83.08315, 48.00001
ListMap

Economic information

Ore body information

  • Depth to top 8M
    Field Value
    MAS Matrix # 1
    MAS Column # 2
    Type of Orebody #1 FISSURE VEIN
    Shape of Orebody #1 IRREGULAR
    Primary mode of Origin MAGMATIC DIFFER
    Primary Ore Control FAULTING
    Degree of Wallrock Alter. UNKNOWN
    Type of Wallrock Alter. #1 UNKNOWN
    Date of Last Modification 910710

Comments on the geologic information

  • THE NEMOGOSENDA COMPLEX CONSISTS OF A CENTRAL AREA, IN WHICH ONLY NEPHELINE SYENITES ARE EXPOSED, SURROUNDED BY AN AUREOLE OF METASOMATIC OR HYBRID ROCKS. IT IS SOMEWHAT CIR- CULAR WITH DIAMETERS RANGING FROM 4.8 TO 6.4 KM. ALKALINE SILICATE ROCKS PREDOMINATELY MAKE UP THE COMPLEX AND GNEISS- ES DOMINATE THE REGION. THE REGIONAL TREND OF THE COUNTRY ROCKS IS NORTH-EASTERLY. IN THE VICINITY OF THE ALKALINE AREA, THE STRIKE OF THESE ROCKS TENDS TO PARALLEL THE RIM OF THE COMPLEX, AND THE ROCKS DIP INWARD.
  • IT WAS DISCOVERED DURING EXPLORATION BY DOMINION GULF CO THAT THERE WAS A CORRELATION BETWEEN THE RELATIVE AMOUNTS OF RADIOACTIVITY AND COLUMBIUM. LATER, IT WAS DISCOVERED THAT ALONG WITH THE COLUMBIUM MINERAL PYROCHLORE, THORIUM-BEARING RARE EARTH MINERALS WERE PRESENT. PYROCHLORE IS THE ONLY COLUMBIUM BEARING MINERAL IDENTI- FIED. IT OCCURS AS A MINOR CONSTITUENT OF ALL THE ALKALINE ROCKS, EXCEPT SOME OF THE LATE MAFIC DIKES, CARBONATE DIKES, AND VIENS. MOST OF THE MINERAL OCCURS IN THE ROCKS BETWEEN THE ALKALINE INTRUSIVES AND GNEISSES. THE HIGHER GRADE CON- CENTRATIONS ARE FOUND IN THE PYROXENE RICH ROCKS, OR IN BRECCIA ZONES RICH IN OTHER MINERALS IN THESE ROCKS. THE PYROCHLORE OCCURS MAINLY AS FINELY DISSEMINATED, RESINOUS YELLOW TO BROWN GRAINS. THE MINERALS MOST INDICATIVE OF HIGHER GRADE COLUMBIUM CONTENT ARE ACICULARAEGIRITE AND AEGIRITE-AUGITE.

Economic information about the deposit and operations

Operation type Surface
Development status Plant
Commodity type Metallic
Significant No
Discovery year 1954
Mining method Open Pit
Plant type Leach
Plant subcategory Precipitation
Milling method Leach-Precipitation

Mining district

District name Nemeg. Lake

Mineral rights holdings

Type of mineral rights Minerals Only

Land status

Ownership category Private

Ownership information

  • Type Owner
    Owner Gulf Agricultural Chemical Co. Ltd.
    Interest 100
    Home office Canada
    Year 1987
  • Type Owner
    Owner Eastmaque Gold Mines Ltd.
    Interest 100
    Home office Canada
    Year 1990

Reserves and resources

  • Type In-situ
    Estimate year 1982
    Indicated 20000000mt ore
    Demonstrated 20000000mt ore
    Total resources 20000000mt ore
    Commodity Subtype Grade units Group Importance Year
    Niobium (Columbium) Cb2O5 0.47 wt-pct Niobium (Columbium) Major 1982
  • Type In-situ
    Estimate year 1982
    Demonstrated 17000000mt ore
    Total resources 17000000mt ore
    Commodity Subtype Grade units Group Importance Year
    Niobium (Columbium) Cb 0.33 wt-pct Niobium (Columbium) Major 1982

Comments on the reserve resource information

  • RESERVES ARE THE RECOVERABLE TONNAGE AS LISTED ON THE 11/83 ETD.
  • RESOURCE ESTIMATE USED IN THE 1983 PROPERTY EVALUATION.

Workings at the site

  • Type of workings Surface
    Field Value
    MAS Development Schedule # 1
    Mining Record # 1
    Status of Mining Method ESTIMATE
    Mining Method OPEN PIT
    Avg. Overburden Thickness 8
    Hardness of Ore M-HARD ROCKS
    Avg. Bench Height (meters) 10
    Capacity 2000
    Capacity Units MT ORE/DAY
    Preprod. Stripping Vol. 416700
    Operating Days per Year 260
    Operating Shifts per Day 3
    Year of Information 1982

Comments on other economic factors

  • THE SURVEY OF THE NEMEGOSENDA DEPOSIT IS BASED ON THE MINING OF ORE ZONE D. HOWEVER, AN EAST ORE AREA EXISTS WHICH CONTAINS ZONES A, B, E, F AND G. THIS AREA HAS BEEN PARTIALLY TESTED BY DRILLING, THEREFORE, THIS WOULD INDICATE THAT CONSIDERABLY MORE TONNAGE CAN BE OBTAINED FROM THESE OTHER ZONES.

Reference information

Bibliographic references

  • Reserve-Resource

    FERGUSON, STEWART A., COLUMBIUM (NIOBIUM) DEPOSITS OF

  • Reserve-Resource

    ONTARIO, MINERALAL RESOURCES, CIRCULAR #14, 1971, P. 41, 42.

  • Reserve-Resource

    PARSON, G.E., NIOBIUM-BEARING COMPLEXES EAST OF LAKE

  • Reserve-Resource

    SUPERIOR, ONTARIO DEPARTMENT OF MINES, GEOLOGICAL REPORT,

  • Reserve-Resource

    #3, 1961, PP. 33-50.

  • Reserve-Resource

    CANADIAN MINERAL DEPOSITS NOT BEING MINED IN 1989,

  • Reserve-Resource

    ENERGY, MINES AND RESOURCES CANADA, MINERAL BULLETIN MR 223,

  • Reserve-Resource

    NOVEMBER 1989.

  • Deposit

    PERRAULT, GUY, AND MANKER, EDGAR, GEOLOGY AND MINERALOGY

  • Deposit

    OF A NIOBIUM DEPOSIT, PAPER PRESENTED AT THE INTERNATIONAL

  • Deposit

    SYMPOSIUM NIOBIUM 81, SAN FRANCISCO, USA, SECTION 3,

  • Deposit

    NOVEMBER 10, 1981.

  • Deposit

    HEINRICH, E.W., THE GEOLOGY OF CARBONATITE, RAND MCNALLY

  • Deposit

    COMPANY, 1966.

  • Deposit

    ROWE, ROBERT B., NIOBIUM (COLUMBIUM) DEPOSITS OF CANADA,

  • Deposit

    GEOLOGICAL SURVEY OF CANADA, BULLETIN #18, 1958.

  • Deposit

    STOCKEN, A., & TEMPLE, A.K., DETAILED GEOLOGY, CHEWETT &

  • Deposit

    COLLINS TWP, DOMINION GULF COMPANY, 1956.

  • Deposit

    CANADIAN MINES HANDBOOK, 1953-1982, DOMINION GULF

  • Deposit

    MINERALS, CANDA.

  • Deposit

    DEPARTMENT OF ENERGY, MINES & RESOURCES - OTTAWA, SOURCE

  • Deposit

    MINERAL DEPOSIT RECORD, N.T.S. DATA SHEETS.

  • Deposit

    DEPARTMENT OF NATURAL RESOURCES ONTARIO, MINERAL DEPOSIT

  • Deposit

    INVENTORY RECORD.

  • Deposit

    ROSKILL INFORMATION SERVICES LTD., THE ECONOMICS OF NIO-

  • Deposit

    BIUM, 1979.

Reporter information

Type Date Name Affiliation Comment
Reporter 22-DEC-94 Miller, F. 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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