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  3. Mineral Resource Data System (MRDS)

Keretti

Past Producer in Finland with commodities Cobalt, Copper, Gold, Silver, Sulfur, Zinc
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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. Nearby scientific data
  8. Ore body information
  9. Economic information about the deposit and operations
  10. Mining district
  11. Ownership information
  12. Production statistics
  13. Reserves and resources
  14. Workings at the site
  15. Links to other databases
  16. Bibliographic references
  17. Reporter information

Geologic information

Identification information

Deposit ID 10232424
MAS/MILS ID 4050500002
Record type Site
Current site name Keretti
Alternate or previous names Keretti Mine

Geographic coordinates

Point of reference Ore Body
Geographic coordinates: 29.53609, 62.60671 (WGS84)
Location accuracy 1000(meters)

Site location context

Political divisions (FIPS codes)

Finland(country)

Europe(continent)

Land(continent)

Geographic areas

Country
Finland

Commodities

Commodity Importance
Cobalt Critical Secondary
Copper Primary
Gold Secondary
Silver Secondary
Sulfur Secondary
Zinc Critical Secondary

Materials information

Materials Type of material
Chalcopyrite Unknown
Pyrite Unknown
Pyrrhotite Unknown
Sphalerite Unknown

Nearby scientific data

Ore Body (1) 29.53609, 62.60671
ListMap

Economic information

Ore body information

  • Thickness 10M
    Length 4000M
    Width 350M
    Area 140HA
    Depth to top 320M
    Field Value
    Type of Orebody #1 DISSEMINATED
    Shape of Orebody #1 TABULAR
    Shape of Orebody #2 LENTICULAR
    Shape of Orebody #3 OTHER
    Primary mode of Origin UNKNOWN
    Primary Ore Control FAULTING
    Degree of Wallrock Alter. UNKNOWN
    Type of Wallrock Alter. #1 UNKNOWN
    Minimum Depth to Top 0
    Min. Thick. Unconsol. Mat. 0
    Total Surface Area (HA) 140
    Date of Last Modification 830609

Economic information about the deposit and operations

Operation type Underground
Development status Past Producer
Commodity type Both
Significant No
Discovery year 1910
Mining method Filled Stopes - Inclined Cut and Fill
Year of first production 1957
Milling method Flotation

Mining district

District name Outokumpu District

Ownership information

  • Type Owner-Operator
    Owner Outokumpu Oy
    Interest 100
    Home office Finland
    Year 1981

Production statistics

  • Year 1980
    Description Ag At 9.0g/Mt Feed And 50% Mill Recovery
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Trace Silver Silver 9g/mt
  • Year 1980
    Description Au At .60g/Mt Feed And 50% Mill Recovery
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Trace Gold Gold 1g/mt
  • Year 1980
    Description Co At .27% Feed With Mill Recovery 78%
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Trace Cobalt Cobalt 0wt-pct
  • Year 1980
    Description Zn At .55% Feed With Mill Recovery 45%
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Trace Zinc Zinc 1wt-pct
  • Year 1980
    Description Cu At 2.8% Feed With Mill Recovery 97%
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Copper Copper 3wt-pct

Comments on the production information

  • HISTORY OF PAST PRODUCTION IS NOT KNOWN IN DETAIL.
  • GOLD AND SILVER IS RECOVERED IN THE CU CONCENTRATE. NICKEL MIGHT ALSO BE RECOVERED SINCE THE ORE CONTAINS 0.1% NI.

Reserves and resources

  • Type In-situ
    Estimate year 0
    Demonstrated 2350000mt ore
    Total resources 2350000mt ore
    Commodity Subtype Grade units Group Importance Year
    Gold Au 0.6 g/mt Gold Minor 0
    Zinc Zn 1 wt-pct Zinc Minor 0
    Cobalt Co 0.3 wt-pct Cobalt Minor 0
    Silver Ag 9 g/mt Silver Minor 0
    Copper Cu 3.5 wt-pct Copper Major 0

Workings at the site

  • Type of workings Surface
    Field Value
    MAS Development Schedule # 1
    Mining Record # 1
    Status of Mining Method ACTUAL
    Mining Method OPEN PIT
    Percent Waste Rock 11.1
    Operating Days per Year 250
    Operating Shifts per Day 2
    Year of Information 1981
  • Type of workings Underground
    Overall depth 310M
    Field Value
    MAS Development Schedule # 1
    Mining Record # 1
    Status of Mining Method ACTUAL
    Mining Method HORIZ CUT & FILL W/WASTE ROCK 10-60
    Percent Waste Rock 0
    Percent Recovery 90
    Hardness of Rock HARDROCK FISSURED WITH MODERATE WATER
    Rock Characteristics UNKNOWN
    Rock Support Chars. SUPPORTING
    Mine Support Chars. UNKNOWN
    Number of Shafts 5
    Length of Inclines (m) 3500
    Slope of Inclines 9
    Number of Inclines 1
    Avg. Length of Adits (m) 0
    1st Condition of Workings OPEN
    Capacity 2000
    Capacity Units MT ORE/DAY
    Unit Production Cost 16.92
    Units of Production $/MT ORE
    Operating Days per Year 250
    Operating Shifts per Day 2
    Year of Information 1980

Reference information

Bibliographic references

  • Production

    WORLD MINING MAR. 1978 P.46-48.

  • Reserve-Resource

    WORLD MINING JAN. 1980 P.36-38.

  • Deposit

    E/MJ INTERNATIONAL DIRECTORY OF MINING, 1975, P. 223.

  • Deposit

    OUTOKUMPU NEWS NO. 1 1965, PUBLISHED BY OUTOKUMPU OY, HEL-

  • Deposit

    SINKI.

  • Deposit

    AHO, A.E., DEC. 1968, NOTES ON SOME MINES AND MINERAL EXPLO-

  • Deposit

    RATION.

  • Deposit

    OUTOKUMPU OY ANNUAL REPORT 1979.

Reporter information

Type Date Name Affiliation Comment
Reporter 03-JAN-95 Porter, Kenneth E. 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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