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THE ORE DATABASE
Occurence 4643 - 005 Åsete
(Object Id: 4678)
(Last updated: 22.03.2013)
Drill Cores: Åset

Location
County: Vestland Municipality: Årdal (4643)
Map 1:50000: Hurrungane (1517-4) Map 1:250000: Årdal
Coordinate system: EU89-UTM Zone 32
East: 433217 m. North: 6803942 m.
Longitude: 7.7508950 Latitude: 61.3637410
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Resource
Resource Type: Base metals (Cu,Zn,Pb,Fe sulphides, As,Sb,Bi,Sn) Resource Subtype: Copper
Element(s): Cu
Importance
Raw material meaning: Little Importance (reg. 18.02.2015)

Resources and production
Activity: Exploration Reserves:
Operating method: Historical production:


Mineralization
Era: Proterozoic Period:
Genesis: Unknown Form: Irregular
Main texture: Min. distribution: Irregular (scattered)
Main grain size: Medium grained (1-3 mm) Main alteration:
Strike/Dip: Direction:
Plunge:
Stratigraphic classification of host rock
Era: Proterozoic Period:
Province: Caledonian Basement Province
Geotec.unit: Jotun Nappe Complex
Tectonic complex:
Igneous complex:
Group: Formation:

Mineralogy
Relationship Mineral Amount
Ore mineral Bornite Major mineral (>10%)
Ore mineral Chalcopyrite Major mineral (>10%)
Ore mineral Chalcocite Major mineral (>10%)

Information(s) in free text format
Free text
The Årdal copper deposits are situated along the valley Fardalen to the north of the Øvre Årdal community. The main deposits are Guds Gave and Kongens gruver at Gruvefjellet, Prins Fredrik close to Åsete and Blåbergets gruve at Farnes, close to Øvre Årdal. The deposits were worked intermittently between 1702 to 1734. The extracted ore contained 2.5-6 % Cu, with a gold content of 10 g/t in the product from the smelter. The main copper minerals are bornite, chalcocite and chalcopyrite, which are mainly associated with amphibolitic layers and bands in mangeritic to jotunitic rocks. The mineralizations are at least partly tectonically controlled, related to brecciated rocks in fault or shear zones. One sample from Blåberget, consisting of a collection of dump rocks contained 0.85 ppm Au, 0.2 ppm Pd and > 1 % Cu. Most other samples had much lower metal contents, and it is estimated a resource of 0.5 mill t. of ore with 0.2-0.25 % Cu at Blåberget.


The fact sheet was created on 29.03.2024

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