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Norsk versjon | ||||
| THE ORE DATABASE | |||||
| Deposit Area 1424 - 006 | |||||
| (Last updated 23.apr.2024) | |||||
Name of Deposit Area : Prins Fredrik |
| (Object Id : 1424,006,00,00) |
| Location |
| County : | Sogn og Fjordane (14) | Municipality : | Årdal (1424) |
| Map 1:50000: | Hurrungane (1517-4) | Map 1:250000: | Årdal |
| Marking point: | Longitude: | 7.7902840 | Latitude: | 61.3609540 |
| EU89-UTM Zone 32 |
| X-coord: | 435317 m. | Y-coord: | 6803592 m. |
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| Commodity |
| Main Type: | Base metals (Cu,Zn,Pb,Fe sulphides, As,Sb,Bi,Sn) | Sub Type: | Copper | |
| Element(s): | Kis Cu |
| Production |
| Activity: | Mining | Reserves: | ||
| Prod. method: | Underground mining | Production: | ||
| Prod. status: | Volume of dump: |
| Importance |
| Public: | Little Importance (reg. 18.02.2015) |
| Economical: | Minor interest , (Confirmed 23.sep.2001 by Are Korneliussen) |
Mineralization |
| Era: | Period: | |||
| Dating: | Method: | |||
| Genesis: | Unknown | Form: | Plate | |
| Main texture: | Min. distribution: |
| Main grain size: | 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: |
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. |
Bibliography: |
| From NGU's Reference Archive: |
| Korneliussen, Are; Staw, Jomar , 1977 |
| Årdalsområdets kopperforekomster. |
| ;Norges geologiske undersøkelse;FAGRAPPORT;NGU-rapport; No.1560/9D;27 pages |
| Abstract: | |
| Denne rapport omhandler den malmgeologiske del av en undersøkelse av malmforekomster i Årdalsområdet. Det presenteres en oversikt over de kjente forekomster, resultater av prøvetaking og analyser, og for enkelte av forekomstene en estimering av forekomststørrelse og gjennomsnittlig koppergehalt. Undersøkelsen gir for de fleste av forekomstene ikke grunnlag for videre optimisme. For en forekomst (Prins Fredrik) er kunnskapsnivået utilstrekkelig for en endelig vurdering. For informasjon om de regionalgeologiske, geokjemiske og geofysiske undersøkelser henvises til rapportene 1560/9A, B og C (Lutro 1977, Krog 1977, Eidsvig 1977). |
| The fact sheet was created on 18.05.2024 |
| Questions or comments regarding the fact sheet can be emailed to: ressursdatabaser@ngu.no |
| Copyright © 2024 Geological Survey of Norway |