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THE ORE DATABASE
Occurence 4613 - 019 Alvsvåg
(Object Id: 4747)
(Last updated: 20.01.1997)

Location
County: Vestland Municipality: Bømlo (4613)
Map 1:50000: Fitjar (1114-1) Map 1:250000: Haugesund
Coordinate system: EU89-UTM Zone 32
East: 284617 m. North: 6631991 m.
Longitude: 5.1637690 Latitude: 59.7696500
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Resource
Resource Type: Base metals (Cu,Zn,Pb,Fe sulphides, As,Sb,Bi,Sn) Resource Subtype: Copper
Element(s): Kis Cu
Importance
Raw material meaning: Not Assessed (reg. 18.02.2015)

Resources and production
Activity: Mining Reserves:
Operating method: Open pit and underground mining Historical production:


Products
Element/product Crude ore grade or quality Reg. date
Au 29.8 ppm 02.04.1992
Cu .2 % 02.04.1992

Operations
From - To Activity Comments
1882 - 1884 Regular production

Mineralization
Dating: 535 (-46\+46) million year Method: Rb/Sr
Genesis: Volcex Form: Layer
Main texture: Banded Min. distribution: Semi-massive (20-50 % ore minerals)
Main grain size: Medium grained (1-3 mm) Main alteration: Chloritisation
Strike/Dip: 130 / 50 Direction:
Plunge:
Stratigraphic classification of host rock
Era: Period:
Province: Caledonides
Geotec.unit: Hardangerfjord Nappe Complex
Tectonic complex:
Igneous complex: Lykling Ophiolite Complex
Group: Formation:

Mineralogy
Relationship Mineral Amount
Gangue mineral Quartz Major mineral (>10%)
Ore mineral Pyrite Subordinate mineral (1-10%)
Ore mineral Pyrrhotite Subordinate mineral (1-10%)
Ore mineral Chalcopyrite Subordinate mineral (1-10%)

Lithology:
Relationship Rock Origin
Unknown Gabbro Intrusive
Original rock :Gabbro
535 (-46\+46) mill. years;..Method:Rb/Sr
Metamorphic facies :Greenschist

Structures
Location: Type: Orientation(360 gr.): Relation to min.:
Unknown Shear plane Strike/Dip :130 / 50 Syn-mineralisation ;...Effect :Controls


The fact sheet was created on 24.10.2021

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