Fact Sheet for <b>Occurence 4643 - 006 Prins Fredrik</b>

					Norsk versjon
	THE ORE DATABASE
	Occurence 4643 - 006 Prins Fredrik
	(Object Id: 4679) (Last updated: 23.04.2024)

Location

County:

Vestland

Municipality:

Årdal (4643)

Map 1:50000:

Hurrungane (1517-4)

Map 1:250000:

Årdal

Coordinate system:

EU89-UTM Zone 32

East:

435317 m.

North:

6803592 m.

Longitude:

7.7902840

Latitude:

61.3609540

Show on map

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:

Little Importance (reg. 18.02.2015)

Resources and production

	Activity:	Mining	Reserves:
	Operating method:	Underground mining	Historical production:

Mineralization

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).

	Genesis:	Unknown	Form:	Plate
	Main texture:		Min. distribution:

	Province:	Caledonian Basement Province
	Geotec.unit:	Jotun Nappe Complex
	Tectonic complex:
	Igneous complex: