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Otanmaki Deposit

Producer in Oulu Laani, Finland with commodities Titanium, Metal, Iron, 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. Economic information about the deposit and operations
  11. Ownership information
  12. Production statistics
  13. Reserves and resources
  14. Links to other databases
  15. Bibliographic references
  16. General comments
  17. Reporter information

Geologic information

Identification information

Deposit ID 10024919
MRDS ID ISM0670
Record type Site
Current site name Otanmaki Deposit

Geographic coordinates

Geographic coordinates: 27.16967, 64.16515 (WGS84)

Site location context

Political divisions (FIPS codes)

Oulu Laani(province)

Finland(country)

Europe(continent)

Land(continent)

Geographic areas

Country State
Finland Oulu Laani

Comments on the location information

  • SOUTH OF LAKE OULU, 500 KM NE OF HELSINKI

Commodities

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

Comments on the commodity information

  • TITANIUM

Materials information

Materials Type of material
Ilmenite Ore
Magnetite Ore

Host and associated rocks

  • Host or associated Host
    Rock type Plutonic Rock > Mafic Intrusive Rock > Gabbro
    Stratigraphic age (youngest) Paleoproterozoic

Nearby scientific data

(1) 27.16967, 64.16515
ListMap

Economic information

Geologic structures

Type of structure Regional
Structure description Magmatic Intrusion

Comments on the geologic information

  • REGIONAL METAMORPHISM (AMPHIOBOLITE FACIES); PREC: ZR; 2000 (RF1 - ALKALIC GNEISS AT NEARBY HONKAMAKI DEPOSIT); MGNT + ILMN (+CLRT + HBLD + PLGC); THIS MAGNETITE-ILMENITE DEPOSIT LIES ON THE NORTHERN FLANK OF A LARGE HORNBLENDE GABBRO INTRUSION IN A HETEROGENEOUS ZONE OF AMPHIBOLITES, GABBROS AND ANORTHOSITES. THE ORE BEARING ZONE CONSISTS OF SEVERAL HUNDRED ORE LENSES (20-200 M LONG, 5-30 M WIDE) IN AN ARCH 2 KM LONG AND 500 M WIDE IN A BASIN-LIKE STRUCTURE TRACEABLE TO A DEPTH OF AT LEAST 800 M. SEVERAL ORE TYPES ARE KNOWN EG IMPREGNATION ORES (LOWEST GRADES LESS THAN 20% ILMENITE & MAGNETITE), BANDED ORES (ALTERNATION OF LOW AND HIGH GRADE LAYERS) & MASSIVE ORES. BEYOND ORE ZONES, DISSEMINATION WEAKLY DEVELOPED. HIGH GRADE ORE CONTAINS 35-40% MAGNETITE, 28-30% ILMENITE, 1-2% PYRITE & 0.25% VANADIUM.

Economic information about the deposit and operations

Development status Producer
Commodity type Metallic
Significant No
Discovery year 1938
Year of first production 1953
Year of last production 1985

Ownership information

  • Type Owner-Operator
    Owner Rautaruukki Oy (State Owned)

Production statistics

  • Year 1974
    Period 1953-1974
    Accuracy Accurate
    Description Cp_Grade: ^45% Tio2
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Titanium Titanium 45wt-pct
  • Year 1974
    Period 1953-1974
    Accuracy Accurate
    Description Cp_Grade: ^13% Tio2
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Titanium Titanium 13wt-pct
  • Year 1983
    Period 1975-1983
    Accuracy Accurate
    Description Cp_Grade: ^45% Tio2
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Titanium Titanium 45wt-pct

Comments on the production information

  • HIGHEST RECORDED PRODUCTION IN 1969: 1298 000 TPA OF FE-TI-V ORE (ZITZMANN 78) GIVES RISE TO APPROX: 175 000 TPA ILMENITE CONCENTRATE (45% TIO2), 350 000 TPA VANADIFEROUS (0.62%) MAGNETITE CONCENTRATE, 6500 TPA PYRITE CONCENTRATE, 3070 TPA V2O5 RF2.PROBABLY NO PRODUCTION AFTER 1984. PC2 ASSUMES 13.6% ILMENITE RETURN FROM ORE (150 000 TONNES FROM 1 100 000 TONNES ORE IN 1974 [RF4]). PC3 ASSUMES 9 YEARS AT 150 000 TPA (BMR).

Reserves and resources

  • Type In-situ
    Estimate year 1970
    Commodity Subtype Grade units Group Importance Year
    Titanium, Metal TiO2 13 wt-pct Titanium Major 1970

Comments on development

  • NON-GEOLOGIC CONSTRAINTS ON DEVELOPMENT OR EXPANSION IN 1-5 YRS. (). DEVELOPMENT(NO); EXPLORATION(NO); ASSESSMENT(RESERVES FOR AT LEAST ANOTHER 30 YEARS DOWN TO A DEPTH OF 800 M. A DECISION WAS MADE IN 1983 TO CLOSE THE MINE, PROBABLY DURING 1984. THIS WAS DUE TO THE LOW PRICES OF THE VANADIUM PENTOXIDE AND IRON CONCENTRATE MEANING THE MINE WAS OPERATING AT A LOSS.); OTHER COMMODITIES PRODUCED - IRON CONCENTRATE 332 000 TONNES IN 1983 (68% FE); VANADIUM PENTOXIDE 2800 TONNES IN 1983 (RF3 ANNUAL REPORT); PYRITE CONCENTRATE 5500 TONNES IN 1978. THE ENTIRE ILMENITE OUTPUT WAS USED AT AN 80 000 TPA TIO2 PLANT AT PORI.

Reference information

Bibliographic references

  • Deposit

    LINDHOLM, O., ANTTONEN, R., 1980, GEOLOGY OF THE OTANMAKI MINE: 26TH INTERNATIONAL GEOLOGICAL CONGRESS PARIS, 1980, P. 191-199.

  • Deposit

    COOPE, B., 1982, TITANIUM MINERALS - FOCUS ON PRODUCTION: INDUSTRIAL MINERALS, JULY, 1982, P. 32.

  • Deposit

    ZITZMANN, A., 1977-78, THE IRON ORE DEPOSITS OF EUROPE AND ADJACENT AREAS, V.I & II: HANNOVER 1977-78.

  • Deposit

    RAUTARUUKKI OY, 1984, RAUTARUUKKI OY ANNUAL REPORT FOR 1983.

  • Deposit

    ISOKANGAS, P., 1978, FINLAND IN BOWIE, SHU, KVALHEIM, A. & HASLAM, H.W. (EDS) MINERAL DEPOSITS IN EUROPE. VOL. I, NORTHWEST EUROPE. THE INSTITUTION OF MINING AND METALLURGICAL SOCIETY OF P. 39-91.

  • Deposit

    VOKES, F.M., 1979, INTRODUCTION IN BOWIE, SHU, KVALHERM, A., & HASLAM, H.W. (EDS), MINERAL DEPOSITS OF EUROPE VOL. I, NORTHWEST EUROPE: LONDON, INSTITUTE OF MINING & METALLURGY/MINERALOGICAL SOCIETY, P.1-38.

  • Deposit

    HARKI, I., 1956, DISCOVERY AND MINING METHODS AT FINLAND'S LARGEST FE-TI-V MINE: MINING WORLD, P.62-68, AUGUST 1956.

  • Deposit

    ADAMS, R., 1984, TITANIUM AND TITANIUM DIOXIDE: FINANCIAL TIMES INFORMATION LTD P. 32.

  • Deposit

    FRIETSCH, R., PAPUNEN, H., VOKES, F.M., 1979, THE ORE DEPOSITS IN FINLAND, NORWAY AND SWEDEN - A REVIEW: ECON. GEOL. V. 74 NO.5.

  • Deposit

    LYND, L.E., LEFOND, S.J., 1975, TITANIUM MINERALS IN INDUSTRIAL MINERALS AND ROCKS, AMERICAN INSTITUTE OF MINING, METALLURGY AND PETROLEUM ENGINEERING, 4TH ED. P. 1149-1207.

  • Production

    RF3 RF4, RF5, BMR

General comments

Subject category Comment text
Deposit THIS RECORD WAS COMPILED FOR THE INTERNATIONAL STRATEGIC MINERALS INVENTORY. THE DATA WERE USED IN PREPARATION OF THE USGS CIRCULAR 930 SERIES OF REPORTS. MINERAL RESOURCE CATEGORIES AND CODES HEREIN ARE FROM THE INTERNATIONAL CLASSIFICATION SYSTEM RECOMMENDED BY THE UNITED NATIONS GROUP OF EXPERTS ON DEFINITIONS AND TERMINOLOGY FOR MINERAL RESOURCES. (SEE NATIONAL RESOURCES FORUM, V. 4, NO. 3, P. 307-313.). UNDERGROUND TIO2 PIGMENT

Reporter information

Type Date Name Affiliation Comment
Reporter 01-AUG-1985 Porter, Lyn M. 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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