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Otanmaki, Finland

Past Producer in Finland with commodities Iron, Titanium, Metal, Vanadium
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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. Host and associated rocks
  8. Nearby scientific data
  9. Geologic structures
  10. Ore body information
  11. Economic information about the deposit and operations
  12. Ownership information
  13. Reserves and resources
  14. Links to other databases
  15. Bibliographic references
  16. General comments
  17. Reporter information

Geologic information

Identification information

Deposit ID 10079695
MRDS ID W029783
Record type Site
Current site name Otanmaki, Finland

Geographic coordinates

Geographic coordinates: 27.16967, 64.13181 (WGS84)
Relative position 10 KM FROM VUOLIJOKI; 38 KM SOUTH SOUTHWEST OF KAJAANI;

Site location context

Political divisions (FIPS codes)

Finland(country)

Europe(continent)

Land(continent)

Geographic areas

Country
Finland

Commodities

Commodity Importance
Iron Primary
Titanium, Metal Critical Primary
Vanadium Critical Secondary

Comments on the commodity information

  • BYPRODUCT IS ROAD BUILDING MATERIAL

Materials information

Materials Type of material
Ilmenite Ore
Magnetite Ore
Pyrite Ore

Analytical data

Result HEMATITE PELETS: 69 % FE, 1.2-1.5 % TI, 0.3 % SI02, 0.62 % V
Result ILMENITE CONCENTRATE: 27 % TI, 0.15 % S, 0.02 % P
Result THE COMPOSITION OF MINED ORE WAS IN 1976: 36 % FE, 13 % TI02, 0.25 % V (BOUND TO THE MAGNETITE), 0.6 % S
Result COMPOSITION OF ORE: 38-40 % MAGNETITE, 27-31 % ILMENITE, 1-2 % PYRITE, 0.25 % VANADIUM

Host and associated rocks

  • Host or associated Associated
    Rock type Plutonic Rock > Mafic Intrusive Rock > Gabbro
  • Host or associated Associated
    Rock type Plutonic Rock > Mafic Intrusive Rock > Anorthosite
  • Host or associated Associated
    Rock type Plutonic Rock > Granitoid > Granite
  • Host or associated Host
    Rock type Plutonic Rock > Mafic Intrusive Rock > Gabbro
  • Host or associated Host
    Rock type Metamorphic Rock > Gneiss > Migmatite
  • Host or associated Host
    Rock type Metamorphic Rock > Amphibolite
  • Host or associated Host
    Rock type Plutonic Rock > Granitoid > Granite

Nearby scientific data

(1) 27.16967, 64.13181
ListMap

Economic information

Geologic structures

Type of structure Regional
Structure description The Deposit Is Part Of A Basic Rockbelt Which Is Roughly 30 Km In Length.
Type of structure Local
Structure description The Basic Belt Is Enclosed By Gneiss Granite And Resembles A Large Dyke

Ore body information

  • General form LENS IRREGULAR
    Strike E-W
    Dip STEEP TO N
    Thickness 200M
    Length 2000M
    Depth to bottom 800M

Comments on the geologic information

  • THE AREA CONTAINS SMALL MASSIFS OF ANDRTHOSITIC GABBROS (INTRUSIVE BEDDED VEINS) PERIPHERAL AMPHIBOLITE IN GNEISSES AND MIGMATITES GENESIS: LIQUIDMAGMATIC THE TITANOMAGNETITE DEPOSIT IS BOUND TO A BASIC ROCK WHICH CONTAINS GNEISSIC GRANITES AND GNEISS. THE OTANMAKI ORE DEPOSIT CONSISTS OF HUNDREDS OF ORE LENSES WITH SILICATIC TITANOMAGETITE.

Economic information about the deposit and operations

Development status Past Producer
Commodity type Metallic
Significant No
Discovery year 1937
Discoverer Geologist Of G.S. Of Finland
Year of first production 1953

Ownership information

  • Type Operator
    Owner Rautaruukki Oy
  • Type Owner
    Owner State Owned

Comments on the production information

  • PRODUCTION OF ROAD BUILDING MATERIAL (BYPRODUCT) ABOUT 320,000 TPY; THE ILMENITE CONCENTRATE IS SOLD TO KEMIRA OY FOR PRODUCTION OF TIO2-PIGMENTS; CAPACITY 3,500 TPD IRON ORE; IRON 800 TPD, TITANIUM CONCENTRATE 450 TPD, AND 6.8 TPD VANADIUM CONCENTRATE.

Reserves and resources

  • Type In-situ
    Estimate year 1975
    Total resources 2000000mt ore
    Commodity Subtype Grade units Group Importance Year
    Vanadium V2O5 0.25 wt-pct Vanadium Minor 1975

Comments on the reserve resource information

  • RESERVES FOR ABOUT 30 TO 35 YEARS DOWN TO 800 METER; THE ORE CONTAINS 38-40 % MAGNETITE, 27-31 % ILMENITE, 1-2 % PYRITE, 0.25 % VANADIUM

Comments on the workings information

  • MAIN SHAFT 661 M, MINING BETWEEN 225 AND 575 M

Comments on development

  • ECON.COM: CAPACITY (1977): 600 MET TPD
  • MINING DOWN TO 660 METER; OPEN STOPING MINING; ONE OR TWO OREBODIES MUST BE DISCOVERED PER MONTH IN ORDER TO KEEP UP WITH RATE OF EXTRACTION. ; MILL.CAP: 950

Reference information

Bibliographic references

  • Deposit

    BGR, SEPT. 1976, INTERNAL REPORT

  • Deposit

    BGR, FEBR. 1977: ROHSTOFFWIRTSCHAFTLICHE LAENDERBERICHTE, XI, ROHSTOFFE ZUR STAHLVEREDLUNG IN FINNLAND, NORWEGEN, SCHWEDEN;

  • Deposit

    THAR, R.: DER ERZBERGBAU FINNLANDS. GLUECKAUF 108 (1972) NO.19 P.843-851

  • Deposit

    POESCHL, A.: DIE TITANOMAGNETIT-LAGERSTAETTE OTANMAEKI IN FINNLAND, 1964

  • Production

    BGR, INTERNAL REPORT,1976;

General comments

Subject category Comment text
Deposit THE DEPOSIT IS A COMPOUND OF A LARGE NUMBER OF SMALL LENTICULAR ORE-LENSES APROXIMATELY 200 M IN LENGTH AND 3 TO 50 M WIDTH, CONTAINING 60,000 TO 500,000 T ORE.
Deposit THE AGE DATING OF THE OTANMAKI GRANITE IS 2.05 BILLION YEARS

Reporter information

Type Date Name Affiliation Comment
Reporter 01-MAY-1978 Saam, Henning G. U.S. Geological Survey

Beyond USGS

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

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