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Flaat Nickel Mine

Past Producer in Vestfold, Norway with commodities Nickel, Copper, Palladium, Phosphorus-Phosphates, Gold, Cobalt, Platinum, Silver
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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. Host and associated rocks
  9. Nearby scientific data
  10. Geologic structures
  11. Ore body information
  12. Controls for ore emplacement
  13. Economic information about the deposit and operations
  14. Mining district
  15. Links to other databases
  16. Bibliographic references
  17. General comments
  18. Reporter information

Geologic information

Identification information

Deposit ID 10038236
MRDS ID M045543
Record type Site
Current site name Flaat Nickel Mine
Alternate or previous names Flaad Nickel Mine, Evje Grube

Geographic coordinates

Geographic coordinates: 7.88858, 58.60575 (WGS84)
Elevation 400
Relative position N. SLOPE OF HILL MYKLEAASEN 65 KM. N. OF KRISTIANSAND

Site location context

Political divisions (FIPS codes)

Vestfold(province)

Norway(country)

Europe(continent)

Land(continent)

Geographic areas

Country State
Norway Vestfold

Commodities

Commodity Importance
Nickel Critical Primary
Copper Primary
Palladium Critical Secondary
Phosphorus-Phosphates Secondary
Gold Secondary
Cobalt Critical Secondary
Platinum Critical Secondary
Silver Secondary

Comments on the commodity information

  • BJORLYKKE GIVES DETALED ORE MINERALOGY

Materials information

Materials Type of material
Apatite Ore
Chalcopyrite Ore
Hematite Ore
Ilmenite Ore
Magnetite Ore
Millerite Ore
Pentlandite Ore
Pyrite Ore
Pyrrhotite Ore

Alteration

  • (Local) Granitic Dikes Cut Ore Body; Produce Millerite, Magnetite, Hematite, Chalcopyrite, Pyrite Assemblage

Analytical data

Result AVERAGE NI GRADE PER YEAR RANGE FROM 0.538% TO 0.974% CU FROM 0.372% TO 0.636%, CO CONTENT OF PYRITE 0.60 TO 1.00% CO, AVG. 0.77% CO
Result MODE OF MINED ORE 75% SILICATE, 8% MAGNETITE, 12-13% SULFIDES, 4% APATITE AVE NI/CU = 0.688
Result SHOWS NI-CU VARY INVERSELY. SULFIDE AVERAGE WEIGHT PERCENT CHALCOPYRITE = 11.48%, PENTLANDITE = 14.44%, PYRRHOTITE = 70.77, PYRITE = 3.31%
Result 1.00% NI AND 0.65% CU ORE CONTAINED 0.023 G. PT, 0.047 G PD AND 0.111 G AU PER METRIC TON
Result VOGT (1902) GIVES AG AS 140 G/MET. TON

Host and associated rocks

  • Host or associated Associated
    Rock type Plutonic Rock > Mafic Intrusive Rock
    Stratigraphic age (youngest) Neoproterozoic
  • Host or associated Associated
    Rock type Plutonic Rock > Mafic Intrusive Rock > Gabbro > Norite
  • Host or associated Associated
    Rock type Metamorphic Rock > Amphibolite
  • Host or associated Host
    Rock type Plutonic Rock > Mafic Intrusive Rock > Diorite

Nearby scientific data

(1) 7.88858, 58.60575
ListMap

Economic information

Geologic structures

Type of structure Regional
Structure description 2 Sets Of Folds; Nw-Se, N-S
Type of structure Local
Structure description Faults With Negligible Movement

Ore body information

  • General form ELONGATED POD
    Strike NE
    Dip 45SE
    Thickness 100M
    Length 900M
    Width 30M

Controls for ore emplacement

  • Ore Body (Plate-Shape) May Parallel Fold Axes

Comments on the geologic information

  • GEOL.DESC: EVJE-IVELAND AMPHIBOLITE IS SURROUNDED BY GRANITIC GNEISSES-MODE OF METANORITE IS QUARTZ = 8.5%, PLAGIOCLASE (AN35) = 30.5, HORNBLENDE = 33.0%, BIOTITE = 14.5%, APATITE = 4.0%, ORE = 9.5%, ANALYSIS GIVEN BY BARTH; OTHER ROCKS ARE SCHISTOSE AMPHIBOLITE, FOLIATED QUARTZ DIORITE (MYKLEAAS TYPE AMPHIBOLITE), BANDED AMPHIBOLITE SPOTTED AMPHIBOLITES, HORNBLENDE GABBROS (EVJITE), HYPERSTHENE ROCK (BAHIAITE), HORNBLENDITE.

Economic information about the deposit and operations

Development status Past Producer
Commodity type Both
Deposit size Large
Significant No
Discovery year 1870
Year of first production 1872

Mining district

District name Vestland District

Comments on the production information

  • 1-3 MAY BE IN METRIC TONS; PT, AU EST. BASED ON FOSLIE AND HOST NGU NO. 137 ANALYSES-MINE STOPPED OPERATION IN 1946; 1635.8 TOZ PT; 3343.0 TOZ PD, THESE ESTIMATES COMPARE WELL WITH CARSTENS IN NGU 208.

Comments on the reserve resource information

  • PESERVES CLOSER STRUCTUAL AND STRATIGRAPHIC EXAMINATION

Comments on the workings information

  • AS DEPOSIT WAS MINED GRADE NI DECREASED FROM 0.95% TO 0.55% OVER LIFE OF MINE

Reference information

Bibliographic references

  • Deposit

    BJORLYKKE, 1947, NORGES GEOL. UNDERS., NO. 168B, P. 31

  • Deposit

    BARTH, 1947, NORGES GEOL. UNDERS., NO. 168A, P. 71

  • Deposit

    FOSLIE AND HORST, 1932, NORGES GEOL. UNDERS., NO. 137

  • Deposit

    BEYSCHLAG, VOGT, TRVSCOTT, 1914, THE DEPOSITS OF USEFUL MINERALS AND ROCKS, P. 296-297

  • Production

    BEYSCHLAG, ET.AL., 1914; BJORLYKKLE, 1947

General comments

Subject category Comment text
Deposit First Production Year: 1872 TO 1946
Deposit BJORLYKKE GIVES DIAMOND DRILL HOLE DATA AND MINE MAPS 2 MILLION METRIC TONS
Deposit EXPOSURES POOR.-BARTH'S DESCRIPTION SUGGESTS BODY IS MAFIC STRATIFORM INTRUSIVE NOW HIGHLY FOLDED AND METAMORPHOSED-PAGE SUSPECTS THAT GOOD STRUCTUAL STUDY MIGHT HELP UNRAVEL STRATIGRAPHY AND FIND MORE ORE NOT EXPOSED AT SURFACE

Reporter information

Type Date Name Affiliation Comment
Reporter 01-MAR-1975 Page, Norman 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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