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THE ORE DATABASE
Deposit Area 1244 - 001
(Last updated 21.mar.1997)

Name of Deposit Area : Tverrberget
(Object Id : 1244,001,00,00)
Location
County : Hordaland (12) Municipality : Austevoll (1244)
Map 1:50000: Marstein (1115-3) Map 1:250000: Bergen
Marking point: Longitude: 5.0369050 Latitude: 60.0122120
EU89-UTM Zone 32 (Coordinates IS confirmed)
X-coord: 279117 m. Y-coord: 6659391 m.
Commodity
Main Type: Ferroalloys (Cr,Ni,Co,V,Mo,W) Sub Type: Nickel
Element(s): Kis Cu
Production
Activity: Pitting Reserves:
Prod. method: Production:
Prod. status: Volume of dump: 2 m3

Importance
Public: Not Assessed (reg. 18.02.2015)
Economical: Not classified/evaluated

Mineralization
Era: Paleozoic Period: Ordovician
Dating: Method:
Genesis: Orthomagmatic formation Form: Lens
Main texture: Structureless Min. distribution: Massive (>50 % ore minerals)
Main grain size: Medium grained (1-3 mm) Main alteration:
Strike/Dip: 38 / 80 Direction:
Plunge:
Stratigraphic classification of host rock
Era: Paleozoic Period: Ordovician
Province:
Geotec.unit:
Tectonic complex:
Igneous complex: Sunnhordland Batholith
Group: Formation:

Mineralogy
Relationship Mineral Amount
Gangue mineral Plagioclase Subordinate mineral (1-10%)
Gangue mineral Hornblende Subordinate mineral (1-10%)
Ore mineral Pyrrhotite Major mineral (>10%)
Ore mineral Chalcopyrite Accessory mineral (<1%)

Lithology:
Relationship Rock Origin
Host rock Gabbro Intrusive
Original rock :Gabbro

Structures
Location: Type: Orientation(360 gr.): Relation to min.:
Host rock Shear plane Strike/Dip :38 / 80 Post-mineralisation ;...Effect :Modifies

Information(s) in free text format
Free text
Skjerpet ligger 80-100 m fra havet, men det er vanskelig å se derfra. Der er utsprengt ca 2 m3. Den mineraliserte sonen har orientering 38°/80°S. Det ses nesten ikke sulfider i fast fjell, sulfidlaget har vel neppe hatt en utstrekning større enn 3 m og en tykkelse på høyst 10 cm. Malmen ligner den fra Fugløy, d.v.s. massiv magnetkis som inneholder litt kobberkis eller en skifrig gabbroid bergart med litt magnetkis og 1-2% kobberkis som sitter på smale sprekker. Mineraliseringen er nok likvidmagmatisk.

Fieldsamples
Sample No. Sample type Miscellanrous
HO0035.01 Bedrock
Sampler :Wulff, P./...Stored :Løkken
Comment :Massiv po med en kornstørrelse på 1 mm, inneholder << 1 % cpy.
No. of registrated element analyses = 1
HO0035.02 Bedrock
Sampler :Wulff, P./...Stored :Løkken
Comment :Malmfragm. Massiv po eller cpy og po i skifrig gabbroid bergart.
No. of registrated element analyses = 1
HO0035.03 Bedrock
Sampler :Wulff, P./...Stored :Løkken
Comment :Malmfragm. Massiv po eller cpy og po i skifrig gabbroid bergart.
No. of registrated element analyses = 1
NB! All analyse values are shown at the end of the printout.:

Analyse Results
from
Deposit Area 1244 - 001 Tverrberget

Element analyses
( *=parts pr. million, #=parts pr.billion, Negative values means below detection limit value.)
Sample No. Sample Type Cu* Zn* Pb* Co* Ni* Ag* Au#
HO0035.01 Bedrock 2122 32 3 1043 5756 1.2 9.0
HO0035.02 Bedrock 3328 35 6 797 4734 1.5 19.0
HO0035.03 Bedrock 3797 35 7 749 4554 1.3 7.0
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Sample No. Pt# Pd# Rh# As* Cd* Ba* Mo* Sb* Bi*
HO0035.01 -3.0 32.0 -5.0 13 -.2 16 92.00 -2 -2
HO0035.02 7.0 10.0 -5.0 26 -.2 14 46.00 -2 -2
HO0035.03 224.0 14.0 -5.0 16 -.2 13 34.00 2 -2
------------------
Sample No. S% V* Cr* Mn* Fe% Th* U* W* Sr*
HO0035.01 24.02 29 113 67 35.87 2.00 -5.00 -2 9.0
HO0035.02 21.76 22 93 125 26.09 2.00 -5.00 -2 4.0
HO0035.03 20.61 30 117 162 25.71 -2.00 -5.00 -2 9.0
------------------
Sample No. La* B*
HO0035.01 1.00 4
HO0035.02 1.00 -3
HO0035.03 1.00 3

The fact sheet was created on 19.05.2024
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