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THE ORE DATABASE | |||||
Occurence 4643 - 005 Åsete | |||||
(Object Id: 4678) (Last updated: 22.03.2013) |
Drill Cores: Åset |
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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 |
Questions or comments regarding the fact sheet can be emailed to: ressursdatabaser@ngu.no |
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