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Kotalahti

Producer in Finland with commodities Nickel, Copper, PGE
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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. Alteration
  8. Mineral occurrence model information
  9. Host and associated rocks
  10. Nearby scientific data
  11. Geologic structures
  12. Ore body information
  13. Economic information about the deposit and operations
  14. Mining district
  15. Ownership information
  16. Production statistics
  17. Reserves and resources
  18. Workings at the site
  19. Links to other databases
  20. Bibliographic references
  21. General comments
  22. Reporter information

Geologic information

Identification information

Deposit ID 10079606
MRDS ID W029645
Record type Site
Current site name Kotalahti

Geographic coordinates

Geographic coordinates: 27.6195, 62.56511 (WGS84)
Relative position AT ORAVIKOSKI, VILLAGE KOTALAHTI, 40 KM SOUTH FROM KUOPIA, 37 KM FROM VARKAUS

Site location context

Political divisions (FIPS codes)

Finland(country)

Europe(continent)

Land(continent)

Geographic areas

Country
Finland

Commodities

Commodity Importance
Nickel Critical Primary
Copper Secondary
PGE Critical Tertiary

Materials information

Materials Type of material
Chalcopyrite Ore
Gersdorffite Ore
Pentlandite Ore
Pyrite Ore
Pyrrhotite Ore
Sphalerite Ore

Alteration

  • (Local) Serpentinization

Analytical data

Result MINED ORE AVERAGE 0.7 % NI AND 0.3 % CU

Mineral occurrence model information

Model code 11
USGS model code 6a
Deposit model name Komatiitic Ni-Cu

Host and associated rocks

  • Host or associated Associated
    Rock type Plutonic Rock > Ultramafic Intrusive Rock > Peridotite
    Rock unit name Karelian
    Rock description Karelian
    Stratigraphic age (youngest) Paleoproterozoic
    Stratigraphic age (youngest) Paleoproterozoic
    Stratigraphic age (youngest) Paleoproterozoic
  • Host or associated Associated
    Rock type Metamorphic Rock > Amphibolite
  • Host or associated Host
    Rock type Metamorphic Rock > Gneiss

Nearby scientific data

(1) 27.6195, 62.56511
ListMap

Economic information

Geologic structures

Type of structure Regional
Structure description Kotalahti Nickel Belt
Type of structure Local
Structure description Faults

Ore body information

  • General form PIPE-LIKE

Comments on the geologic information

  • THE PRINCIPAL DEPOSITS IN THE KOTALAHTI NICKEL BELT ARE: KOTALAHTI, HITURA, MAKOLA, MJOEVATTNET-LAPPVATTNET (SWEDEN) AND TWO OTHER SMALL ONES IN FINLAND. GENESIS- LIQUIDMAGMATIC. DISSEMINATED ORE HAS A NI:CU RATIO OF 10, IN BRECCIA THE RATIO IS 2.

Economic information about the deposit and operations

Development status Producer
Commodity type Metallic
Significant No
Discovery year 1954
Year of first production 1959

Mining district

District name Outokumpu District, Kotalahti Nickel Belt

Ownership information

  • Type Owner
    Owner Outokumpu Oy

Production statistics

  • Year 1980
    Period 1959-1980
    Material ORE
    Accuracy Accurate
    Description Cp_Grade: ^0.7% Ni, 0.3% Cu
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Nickel Nickel 1wt-pct
    Minor Ore Copper Copper 0wt-pct

Comments on the production information

  • FLOTATION: NICKEL CONCENTRATE: 5.98 % NI AND 0.73 % CU. RATE OF RECOVERY 94 % (NI) AND 30 % (CU). COPPER CONCENTRATE: 28.6 % CU AND 0.87 % NI. RATE OF RECOVERY 0.87 % (NI) AND 60 % (CU).

Reserves and resources

  • Type In-situ
    Estimate year 1975
    Total resources 6000000000mt ore
    Commodity Subtype Grade units Group Importance Year
    Nickel Ni 0.8 wt-pct Nickel Major 1975
    Copper Cu 0.3 wt-pct Copper Minor 1975
  • Type In-situ
    Estimate year 1980
    Total resources 14300000000mt ore
    Commodity Subtype Grade units Group Importance Year
    Nickel Ni 0.7 wt-pct Nickel Major 1980
    Copper Cu 0.3 wt-pct Copper Minor 1980

Workings at the site

  • Type of workings Underground
    Overall length 1371.6M

Reference information

Bibliographic references

  • Deposit

    B.G.R., FEB. 1977, ROHSTOFFWIRTSCHAFTLICHE LAENDERBERICHTE, ROHSTOFFE ZUR STAHLVEREDLUNG IN FINNLAND, NORWEGEN, SCHWEDEN

  • Deposit

    MINING MAGAZINE, 1978, FINLAND: MEETING THE CHALLENGE: DEC., P. 565-585.

  • Deposit

    MINING MAGAZINE, JANUARY, 1987.

  • Deposit

    DEYOUNG AND OTHERS, 1985, INTERNATIONAL STRATEGIC MINERALS INVENTORY SUMMARY REPORT--NICKEL: U.S. GEOLOGICAL SURVEY CIRCULAR 930-D, 62 P.

  • Production

    BGR, FEB., 1977; CUMULATIVE PRODUCTION IS FROM DEYOUNG AND OTHERS, 1985.

  • Reserve-Resource

    1980 DATA FROM DEYOUNG AND OTHERS, 1985

General comments

Subject category Comment text
Deposit FIVE OREBODIES: 1)HUUHTIJAERVI, THICKNESS 5 TO 10 METER, 2 % NI, 0.7 % CU; 2) JUSSI, THICKNESS 50 TO 70 METER, 0.7 % NI, 0.25 % CU; 3) VEKLA, THICKNESS 5 TO 10 METER, 0.7 % NI, 0.25 % CU; 4) VAELMALMID, THICKNESS 20 TO 40 METER, 1.0 TO 1.5 % NI, 0.45 % CU; 5) MERTAKOSKI, THICKNESS 20 TO 40 METER, 0.6 % NI, 0.2 % CU.
Deposit THE DEPOSITE IS DIVIDED INTO FIVE SEPERATE OREBODIES AND CONSIDERABLE DIFFERENT IN THE MINERALIZATION MAY BE NOTED IN THE DIFFERENT PARTS OF THE SAME OREBODY THERE ARE TWO MAIN TYPES OF ORE-THE DISSEMINATED ORE (NICKEL/COPPER RATIO ABOUT 10 TO 1) AND THE BRECCIA TYPE (NICKEL/COPPER RATIO ABOUT 2 TO 1).

Reporter information

Type Date Name Affiliation Comment
Reporter 01-JAN-1977 Saam, Henning G. U.S. Geological Survey
Updater 01-JAN-1988 Orris, Greta J. U.S. Geological Survey

Beyond USGS

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

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