1. Mineral Resources
  2. Online Spatial Data
  3. Mineral Resource Data System (MRDS)

Kemi

Plant in Lappi, Finland with commodities Chromium, Iron, Silica
Map
XML
JSON
KML
B
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. Production statistics
  15. Workings at the site
  16. Links to other databases
  17. Bibliographic references
  18. Reporter information

Geologic information

Identification information

Deposit ID 10158061
MAS/MILS ID 4050350003
Record type Site
Current site name Kemi

Geographic coordinates

Point of reference Ore Body
Geographic coordinates: 24.61155, 65.79296 (WGS84)
Elevation 50
Location accuracy 500(meters)

Site location context

Political divisions (FIPS codes)

Lappi(province)

Finland(country)

Europe(continent)

Land(continent)

Geographic areas

Country State
Finland Lappi

Commodities

Commodity Importance
Chromium Critical Primary
Iron Tertiary
Silica Tertiary

Materials information

Materials Type of material
Chromite Unknown
Hematite Unknown
Ilmenite Unknown
Magnetite Unknown
Rutile Unknown
Serpentine Unknown
Talc Unknown

Nearby scientific data

Ore Body (1) 24.61155, 65.79296
ListMap

Economic information

Ore body information

  • Strike N45E
    Dip 70N
    Thickness 40M
    Length 1200M
    Field Value
    MAS Matrix # 1
    MAS Column # 1
    Type of Orebody #1 STRATIFORM
    Shape of Orebody #1 TABULAR
    Shape of Orebody #2 LENTICULAR
    Primary mode of Origin MAGMATIC DIFFER
    Primary Ore Control LITHOLOGY
    Secondary Ore Control CONTACT ZONE
    Degree of Wallrock Alter. INTENSE
    Type of Wallrock Alter. #1 OTHER
    Type of Wallrock Alter. #2 PROPYLITIC
    Strike And Dip N45E:70N
    Minimum Depth to Top 0
    Min. Thick. Unconsol. Mat. 0
    Date of Last Modification 910822
  • Strike N45E
    Dip 70N
    Thickness 30M
    Length 700M
    Field Value
    MAS Matrix # 1
    MAS Column # 2
    Type of Orebody #1 STRATIFORM
    Shape of Orebody #1 TABULAR
    Shape of Orebody #2 LENTICULAR
    Primary mode of Origin MAGMATIC DIFFER
    Primary Ore Control LITHOLOGY
    Secondary Ore Control CONTACT ZONE
    Degree of Wallrock Alter. INTENSE
    Type of Wallrock Alter. #1 OTHER
    Type of Wallrock Alter. #2 PROPYLITIC
    Strike And Dip N45E:70N
    Minimum Depth to Top 0
    Min. Thick. Unconsol. Mat. 0
    Date of Last Modification 910822
  • Strike N45E
    Dip 70N
    Thickness 15M
    Length 500M
    Field Value
    MAS Matrix # 1
    MAS Column # 3
    Type of Orebody #1 STRATIFORM
    Shape of Orebody #1 TABULAR
    Shape of Orebody #2 LENTICULAR
    Primary mode of Origin MAGMATIC DIFFER
    Primary Ore Control LITHOLOGY
    Secondary Ore Control CONTACT ZONE
    Degree of Wallrock Alter. INTENSE
    Type of Wallrock Alter. #1 OTHER
    Type of Wallrock Alter. #2 PROPYLITIC
    Strike And Dip N45E:70N
    Minimum Depth to Top 0
    Min. Thick. Unconsol. Mat. 0
    Date of Last Modification 910822

Comments on the geologic information

  • WALL ROCK ALTERATION PREDOMINANTLY ALTERATION OF PERIDOTITES TO SERPENTINITES AND TALC-CARBONATES NEAR THE ORE ZONE. ORE LAYERS STRONGLY BRECCIATED AND CONTAIN PLENTY OF WALL ROCK INCLUSIONS. UNSPECIFIED METAMORPHIC ROCK TYPES ARE TALC-CARBONATE UNITS. 1ST ORE IS SOFT ORE (85 PCT OF ORE IN THE VIIA PIT) COMPRISED OF 60 PCT CHROMITE AND 40 PCT TALC-CARBONATE. 2ND ORE IS HARD ORE (15 PCT OF ORE IN THE VIIA PIT) COM- PRISED OF CHROMITE AND SERPENTINE. ORE TONNAGE FACTOR USED IN ANALYSIS WAS 3.45 MT/CU M. MAFIC-ULTRAMAFIC COMPLEX DESCRIBED IN L-REC IS GENERAL WHICH ALSO APPLIES TO Q-MATRICES 1/2 AND 1/3. COMPLEX IS A LAYERED (SILL-LIKE) PLUTONIC INTRUSION WITHIN THE CONTACT BETWEEN THE PUDASJARVI MIGMATITE GRANITE MASSIF AND THE KARELIAN SHIST AREA OF THE PERAPOHJA SHIST BELT.

Economic information about the deposit and operations

Operation type Surface
Development status Plant
Commodity type Metallic
Significant Yes
Discovery year 1959
Mining method Bench (Berm)
Year of first production 1967
Plant type Beneficiation (Mill)
Plant subcategory Gravity
Milling method Gravity

Mining district

District name Kemi

Mineral rights holdings

Type of mineral rights Unknown
Type of mineral rights Unknown
Type of mineral rights Unknown

Land status

Ownership category Unknown

Ownership information

  • Type Owner-Operator
    Owner Outokumpu Oy (Stainless Steel Division)
    Interest 100
    Home office Finland
    Year 1991

Production statistics

  • Year 1967
    Description Rom Ore 315000 Mt
  • Year 1968
    Description Rom Ore 405000 Mt
  • Year 1969
    Accuracy Estimate
    Description Rom Ore (Estimate) 325000 Mt
  • Year 1970
    Accuracy Estimate
    Description Rom Ore (Estimate) 325000 Mt
  • Year 1971
    Accuracy Estimate
    Description Rom Ore (Estimate) 325000 Mt
  • Year 1972
    Description Rom Ore 274000 Mt
  • Year 1973
    Description Rom Ore 300000 Mt
  • Year 1974
    Description Rom Ore 450000 Mt
  • Year 1975
    Description Rom Ore 503000 Mt
  • Year 1976
    Description Rom Ore 625000 Mt
  • Year 1977
    Description Rom Ore 837000 Mt
  • Year 1978
    Accuracy Estimate
    Description Rom Ore (Estimate) 800000 Mt
  • Year 1979
    Accuracy Estimate
    Description Rom Ore (Estimate) 700000 Mt
  • Year 1980
    Description Rom Ore 566000 Mt
  • Year 1981
    Description Rom Ore 632000 Mt
  • Year 1982
    Description Rom Ore 610000 Mt
  • Year 1983
    Description Rom Ore 510200 Mt
  • Year 1984
    Description Rom Ore 891200 Mt
  • Year 1985
    Description Rom Ore 1084700 Mt
  • Year 1986
    Description Rom Ore 1321000 Mt
  • Year 1987
    Description Rom Ore (Planned) 1100000 Mt

Comments on the reserve resource information

  • M1C4= M1C1 + M1C2 + M1C3 MATRICES BASED ON COMPANY SUPPLIED INFO. (VISIT 6/22-23/87): RESERVES/RESOURCES AS OF JAN.1,1987(USING 20% CR2O3 CUT- OFF GRADE): OPENPITTABLE (TO 250 M VERTICAL): VIIA PIT = 33,045,000 MT AT 26.0% CR2O3(1.52 CR/FE) VIIANMAA/PERUKKA= 4,303,000 MT AT 26.8% CR2O3(1.60 CR/FE) NUOTTIJARVI/ SURMANJOA = 2,619,000 MT AT 26.5% CR2O3(1.51 CR/FE) TOTAL = 39,967,000 MT AT 26.6% CR2O3(1.53 CR/FE) IN-SITU, UG MINEABLE (250-1,000 M VERTICAL): DEMONSTRATED = 31,870,000 MT AT 27.2% CR2O3(1.53 CR/FE) INFERRED = 72,260,000 MT AT 26.6% CR2O3(1.50 CR/FE) TOTAL =104,130,000 MT AT 26.9% CR2O3(1.51 CR/FE) PARAMARGINAL = 6,041,000 MT AT 20.3% CR2O3 GRAND TOTAL =150,138,000 MT AT 26.6% CR2O3 Q-MATRIX 1 VALUES = JAN. 1989 CR AVAIL/SUPPLY STUDY DATE. COL.1=VIIA PIT; OPENPITTABLE TO 250 M VERTICAL. COL.2=VIIANMAA-PERUKKA; OPENPITTABLE TO 60 M VERTICAL. COL.3=NUOTTIJARVI-SURMANJOA; OPENPITTABLE TO 100 M VERT. COL.4= COLUMNS 1+2+3 = TOTAL OPENPITTABLE (ANALYZED) COL.6= IN SITU,UNDERGROUND(250-1,000 M VERT.)-NO ANALYSIS COL.7= PARAMARGINAL- NO ANALYSIS. NOTE: Q-MATRIX VALUES DIFFER SLIGHTLY FROM CO. VALUES DUE TO ASSUMED 4.5 PCT CR2O3 GRADE DILUTION BY 0 PCT CR2O3 MATERIAL. ALSO, VIIA PIT Q-MATRIX VALUE HAS HAD 1987 AND 1988 ORE PRODUCTION SUBTRACTED OUT.
  • 1/89 INSITU DEMO.TONNAGE= OPENPITTABLE AT AVG.8.5/1 WASTE/ORE; CO. CARRIES ADDITIONAL 110,000,000 MT DEM.,INFER.,PARAMARGINAL
  • OWNERSHIP BY OUTOKUMPU OY IS 100 PCT THRU THEIR "STAINLESS STEEL DIVISION". SITE VISIT BY E.BOYLE. FOR ANALYSIS (LONG TERM): 1,148,000 MTPY ROM FOR: 150,000 MTPY OF MET CONCS.FOR PELLETIZING AT TORNIO SMELTER, 350,000 MTPY OF UPGRADED LUMP ORE FOR TORNIO SMELTER, 75,000 MTPY OF MET CONCS FOR EXPORT, 20,000 MTPY OF CHEM.CONCS FOR EXPORT, 12,000 MTPY FOUNDRY SAND CONCS.FOR EXPORT. NOTE: IN 1989 CO.ANNOUNCED THAT GRAV.CONC./PELLETIZING CAPACITY TO BE INCR.TO 300,000MTPY

Workings at the site

  • Type of workings Surface
    Area 600HA
    Field Value
    MAS Development Schedule # 1
    Mining Record # 1
    Status of Mining Method ACTUAL
    Mining Method BENCH (BERM)
    Percent Waste Rock 77.3
    Avg. Overburden Thickness 0
    Hardness of Ore M-HARD ROCKS
    Avg. Bench Height (meters) 12
    Max. Pit Slope (degrees) 40
    Capacity 3489
    Capacity Units MT ORE/DAY
    Preprod. Stripping Vol. 0
    Unit Production Cost 11.6
    Units of Production $/MT ORE
    Operating Days per Year 329
    Operating Shifts per Day 3
    Year of Information 1987
  • Type of workings Surface
    Area 600HA
    Field Value
    MAS Development Schedule # 1
    Mining Record # 2
    Status of Mining Method ESTIMATE
    Mining Method BENCH (BERM)
    Percent Waste Rock 89.2
    Avg. Overburden Thickness 0
    Hardness of Ore M-HARD ROCKS
    Avg. Bench Height (meters) 12
    Max. Pit Slope (degrees) 40
    Capacity 3489
    Capacity Units MT ORE/DAY
    Preprod. Stripping Vol. 0
    Unit Production Cost 15.14
    Units of Production $/MT ORE
    Operating Days per Year 329
    Operating Shifts per Day 3
  • Type of workings Surface
    Area 600HA
    Field Value
    MAS Development Schedule # 1
    Mining Record # 3
    Status of Mining Method ESTIMATE
    Mining Method BENCH (BERM)
    Percent Waste Rock 92.1
    Avg. Overburden Thickness 0
    Hardness of Ore M-HARD ROCKS
    Avg. Bench Height (meters) 12
    Max. Pit Slope (degrees) 40
    Capacity 3489
    Capacity Units MT ORE/DAY
    Preprod. Stripping Vol. 0
    Unit Production Cost 16.88
    Units of Production $/MT ORE
    Operating Days per Year 329
    Operating Shifts per Day 3
  • Type of workings Surface
    Area 600HA
    Field Value
    MAS Development Schedule # 1
    Mining Record # 4
    Status of Mining Method ESTIMATE
    Mining Method BENCH (BERM)
    Percent Waste Rock 91.9
    Avg. Overburden Thickness 0
    Hardness of Ore M-HARD ROCKS
    Avg. Bench Height (meters) 12
    Max. Pit Slope (degrees) 40
    Capacity 3489
    Capacity Units MT ORE/DAY
    Preprod. Stripping Vol. 0
    Unit Production Cost 17.03
    Units of Production $/MT ORE
    Operating Days per Year 329
    Operating Shifts per Day 3
  • Type of workings Surface
    Area 600HA
    Field Value
    MAS Development Schedule # 1
    Mining Record # 5
    Status of Mining Method ESTIMATE
    Mining Method BENCH (BERM)
    Percent Waste Rock 91.4
    Avg. Overburden Thickness 0
    Hardness of Ore M-HARD ROCKS
    Avg. Bench Height (meters) 12
    Max. Pit Slope (degrees) 40
    Capacity 3489
    Capacity Units MT ORE/DAY
    Preprod. Stripping Vol. 0
    Unit Production Cost 17.57
    Units of Production $/MT ORE
    Operating Days per Year 329
    Operating Shifts per Day 3

Comments on other economic factors

  • THIS IS BASED ON 1987 SITE VISIT.

Reference information

Bibliographic references

  • Reserve-Resource

    TRIP NOTES, VISIT BY E. BOYLE TO KEMI MINE AND TORNIO SMELT-

  • Reserve-Resource

    ER; JUNE 22/23, 1987. IN MAFO'S PROPERTY FILE.

  • Deposit

    TRIP REPORT, VISIT BY E. SCHEKARCHI, DIV. OF INTL. MINERALS,

  • Deposit

    MAY 28-JUNE 11, 1987; PP 3-6, PLUS 3 FIGS.

  • Deposit

    KUJANPAA, J."THE KEMI CHROMITE DEPOSIT". PP 15-19 OF TOUR

  • Deposit

    BROCHURE FOR SERIES OF VISITS TO MINERAL DEPOSITS OF

  • Deposit

    CENTRAL FINLAND.

  • Deposit

    VAHTOLA, J. AND HONKANIEMI, M. "HIGH PRODUCTIVITY OF FERRO-

  • Deposit

    CHROMIUM SMELTING OF PREHEATED LUMPY ORE IN A LARGE

  • Deposit

    CLOSED-TYPE SUBMERGED ARC FURNACE". PRESENTATION, FERRO-

  • Deposit

    ALLOYS CONF., WASHINGTON, D.C. APRIL, 1986.

  • Deposit

    METALS BULLETIN MONTHLY."FERRO-CHROME PLANT GEARS UP". NOV.

  • Deposit

    1990. P.31.

  • Deposit

    ANON. 1978."KEMI--AN OPEN PIT CHROMITE MINE," MINING MAGA-

  • Deposit

    ZINE. DEC. 1978. PP 577-581.

  • Deposit

    ANON. 1974."MINING AND PROCESSING VERY LOW GRADE CHROMITE IN

  • Deposit

    FINLAND". WORLD MINING OCT. 1974. PP 54-55.

  • Deposit

    NILSSON, D."CHROMIUM IN FINLAND",SKILLINGS' MINING REVIEW.

  • Deposit

    FEB. 10, 1979. PP.10-14.

  • Deposit

    LUKKARINEN, T. AND L. HEIKKILA. "BENEFICIATION OF CHROMITE

  • Deposit

    ORE, KEMI, FINLAND" PROCS., 10TH INTL. MINERAL PROCESSING

  • Deposit

    CONGRESS,1973. M.J.JONES, ED. INSTITUTION OF MINING AND

  • Deposit

    METALLURGY, LONDON. 1974. PP 869-884.

  • Deposit

    E/MJ. NOV.1973. PP 99,101.

  • Deposit

    ANON. 1980. METALS BULLETIN, MAR. 18, 1980

  • Deposit

    ANON. 1986. NOTES OF OUTOKUMPU; FERRO-ALLOY CONFERENCE,

  • Deposit

    APR. 1986.

  • Deposit

    SARKKA, D. "MINING METHODS IN FINLAND".

  • Deposit

    ERIKOISPAINO OY (PUBL.), "OUTOKUMPU OY KEMI MINE" 1985.

  • Deposit

    ANON. 1974. "CHROME MINING IN FINLAND" MINING MAGIZINE

  • Deposit

    PP 287-293, OCT 1974.

  • Deposit

    ANON. "CHROMITE MINE WITH STAINLESS STEEL PLANT BOOMING

  • Deposit

    NEAR FINLAND'S ARCTIC CIRCLE", CIRCA 1978.

Reporter information

Type Date Name Affiliation Comment
Reporter 19-APR-95 Boyle, Ed U.S. Bureau of Mines

Beyond USGS

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

Maps centered on this site