Fact Sheet for <b>Occurence 3116

					Norsk versjon
	THE ORE DATABASE
	Occurence 3116 - 001 Skår
	(Object Id: 6631) (Last updated: 28.05.2025)

Location

County:

Østfold

Municipality:

Skiptvet (3116)

Map 1:50000:

Sarpsborg (1913-1)

Map 1:250000:

Oslo

Coordinate system:

EU89-UTM Zone 32

East:

623418 m.

North:

6586942 m.

Longitude:

11.1738970

Latitude:

59.4029880

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Resource

	Resource Type:	Ferroalloys (Cr,Ni,Co,V,Mo,W)	Resource Subtype:	Nickel
			Element(s):	Ni Cu

Importance

Raw material meaning:

Little Importance (reg. 18.02.2015)

Resources and production

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

Products

Element/product Crude ore grade or quality Reg. date

Ni 2.0 % 18.02.2005

Mineralization

Era: Proterozoic Period: Mesoproterozoic

Genesis: Orthomagmatic formation Form:

Main texture: Min. distribution:

Main grain size: Main alteration:

Strike/Dip: Direction:

Plunge:

Stratigraphic classification of host rock

Era: Proterozoic Period: Mesoproterozoic

Province: East Norwegian Basement Province

Geotec.unit: Østfold Complex

Tectonic complex:

Igneous complex:

Group: Formation:

Information(s) in free text format

Free text

Rekstad (1921) skriver "Ved Skår, likeoverfor Furuholmen ved Glomma, har der været skjerpet på nikkelholdig magnetkis. Malmen består også her av magnetkis med noget kobberkis. Sidestenen til malmen er en finkornig gabbro. Her er forøvrig kun litet gabbro å se. Den forherskende bergart er gneis. Forekomsten ved Skår synes å være forholdsvis liten. Den blev drevet av Glørud interessentskap 1876-77. Primamalmen herfra er opgitt å skulle inneholdt 2% nikkel og sekundamalmen 0,8%."

Bibliography:

From NGU's Reference Archive:

Rekstad, J. , 1921

Eidsberg. De geologiske forhold innen rektangelkartet Eidsbergs område

;Norges geologiske undersøkelse;KARTBESKRIVELSE; BOK;NGU; No.88;76 pages

Abstract:

The territory is situated in south-eastern Norway to the east of the Oslofjord. It is an inland district which at no place reaches the sea. Glomma is the chief river which runs through the country in a southerly direction. The rocks occurring here are gneiss, granite, gabbro and schistose amphibolite, all of them of Archean age. Gneiss occupies a large area of the region. The rock has a varied appearance. Partly it is rich in mica (mica gneiss), partly it contains hornblende (hornblende-gneiss), partly it is coarse-grained and of granitoid texture. This latter form embraces also granite which has been deformed by powerful mechanical forces. This granite is intermixed with the gneiss in such a way as to make it impossible to separate them on the map. For the most part there is no distinctive demarcation between them, but the one passes into the other. The gneiss is mostly stratified, with well defined strike and dip. The granite intermixed is younger than the gneiss, but it belongs to the oldest known granites of Scandinavia. The gneiss is for the most part of igneous origin. Gabbro and amphibolite occur as numerous lenses injected into the gneiss. Connected with the gabbro here occurs nickelferous pyrrhotite. The greatest of these occurrences is at Romsås.

, 1940

Aktenvermerk uber Nickelerz-Vorkommen in Smålenene.

;Norges geologiske undersøkelse;FAGRAPPORT;Bergarkivet; No.BA 1585;2 pages

Abstract:

Notatet gir opplysninger om nikkel-magnetkisforekomster i Smålenene, Spydeberg, Hobøl, Skiptvedt, Svendal, Rakkestad, Eidsberg, Trøgstad og Askim.

	Element/product	Crude ore grade or quality	Reg. date
	Ni	2.0 %	18.02.2005

Era:	Proterozoic	Period:	Mesoproterozoic
Genesis:	Orthomagmatic formation	Form:
Main texture:		Min. distribution:

	Province:	East Norwegian Basement Province
	Geotec.unit:	Østfold Complex
	Tectonic complex:
	Igneous complex:

	Abstract:
	Notatet gir opplysninger om nikkel-magnetkisforekomster i Smålenene, Spydeberg, Hobøl, Skiptvedt, Svendal, Rakkestad, Eidsberg, Trøgstad og Askim.