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Lahnaslampi

Producer in Oulu Laani, Finland with commodities Talc-Soapstone, Nickel, Magnesite
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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. Ore body information
  12. Economic information about the deposit and operations
  13. Ownership information
  14. Reserves and resources
  15. Links to other databases
  16. Bibliographic references
  17. General comments
  18. Reporter information

Geologic information

Identification information

Deposit ID 10023258
MRDS ID I000055
Record type Site
Current site name Lahnaslampi

Geographic coordinates

Geographic coordinates: 28.41964, 64.13178 (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

  • IN SOTKAMO COMMUNE, 25 KM SE OF KAJOANI.

Commodities

Commodity Importance
Talc-Soapstone Primary
Nickel Critical Secondary
Magnesite Tertiary

Materials information

Materials Type of material
Bravoite Ore
Pentlandite Ore
Talc Ore
Magnetite Gangue
Pyrrhotite Unknown

Alteration

  • (Local) Steatization, Metasomatism

Analytical data

Result OPERATION PRODUCES 6 GRADES OF TALC.

Mineral occurrence model information

Model code 20
USGS model code 8f
Deposit model name Ultramafic hosted magnesite

Host and associated rocks

  • Host or associated Host
    Rock type Metamorphic Rock > Schist
  • Host or associated Host
    Rock type Metamorphic Rock > Gneiss

Nearby scientific data

(1) 28.41964, 64.13178
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Economic information

Ore body information

  • Length 1400M
    Width 200M

Economic information about the deposit and operations

Development status Producer
Commodity type Both
Deposit size Large
Significant No

Ownership information

  • Type Owner
    Owner Suomen Talkki Oy (Finntalc, Ltd.)

Comments on the production information

  • THERE HAVE BEEN "CENTURIES" OF PRODUCTION FROM THIS DEPOSIT.

Reserves and resources

  • Type In-situ
    Estimate year 1978
    Total resources 30000000000mt ore
    Commodity Subtype Grade units Group Importance Year
    Talc-Soapstone Talc 50 wt-pct Talc-Soapstone Major 1978
    Nickel Ni 0.1 wt-pct Nickel Minor 1978

Comments on development

  • NI IS SEPARATED FROM THE TALC PROCESSING WASTE.

Reference information

Bibliographic references

  • Deposit

    ISOKANGAS, PAULI, 1978, FINLAND, IN BOWIE, S.H.U., KVALHEIM, A., AND HASLAM, H.W., EDS., MINERAL DEPOSITS OF EUROPE, VOLUME 1: NORTHWEST EUROPE: LONDON, THE INSTITUTION OF MINING AND METALLURGY AND THE MINERALOGICAL SOCIETY, P. 39-92.

  • Deposit

    HARBEN, P.W., AND BATES, R.L., 1990, TALC, IN INDUSTRIAL MINERALS: GEOLOGY AND WORLD DEPOSITS: LONDON, METAL BULLETIN PLC, P. 274-281.

  • Production

    ISOKANGAS, 1978.

General comments

Subject category Comment text
Deposit DEPOSIT IS A VERTICAL LENS-SHAPED BODY ABOUT 200 M IN WIDTH AND CONFORMABLE WITH FOLIATION OF ENCLOSING GNEISS. THE OUTCROP SURFACE AREA EXCEDES 10 HECTARES. DEPOSIT IS 50% TALC; WITH THE BALANCE BEING COMPOSED OF FE-BEARING MAGNESITE (BREUNNERITE, 1-2% OPAQUE MINERALS, AND NICKEL MINERALS.

Reporter information

Type Date Name Affiliation Comment
Reporter 01-SEP-1990 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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