Fact Sheet for Deposit Area 123

					Norsk versjon
	THE ORE DATABASE
	Deposit Area 123 - 002
	(Last updated 20.nov.2024)

Name of Deposit Area : VESTBY

(Object Id : 0123,002,00,00)

Location

County :

Østfold (01)

Municipality :

Spydeberg (0123)

Map 1:50000:

Ski (1914-3)

Map 1:250000:

Oslo

Marking point:

Longitude:

11.0539030

Latitude:

59.5742560

EU89-UTM Zone 32

X-coord:

616018 m.

Y-coord:

6605791 m.

Commodity

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

Production

Activity:	Pitting	Reserves:
Prod. method:		Production:
Prod. status:	Disused, closed	Volume of dump:

Importance

Public: Little Importance (reg. 18.02.2015)

Economical: Minor interest , (Confirmed 16.feb.2005 by Havard Gautneb)

Mineralization

Era: Proterozoic Period: Mesoproterozoic

Dating: Method:

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

Vestby skjerp er listet opp hos Foslie (1925). I følge Rekstad (1921) opptrer det "fahlbånn i gneis." Her var det noe drift for Romsås nikkelverk til 1877.

Bibliography:

From NGU's Reference Archive:

, 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.

Foslie, Steinar , 1925

Syd-Norges gruber og malmforekomster.

;Norges geologiske undersøkelse;TIDSSKRIFTARTIKKEL;NGU; No.126;1-89 + ka pages

Abstract:

On the map accompanying this paper all the mines and ore deposits of Southern Norway are collected for the first time.The material has been gathered from printed and unprinted sources, communications from mining engineers and geologists, and through personal visits. Included are all mines and ore deposits of former, present and future importance. Among the 1407 deposits on the map, there are furthermore included all of doubtful value and many which are quite unworkable, but of geological interest, or those which mark the distribution of ore bearing formations. For this reason it has been necessary to mark the deposits with signs of different size. The object is only to facilitate a comprehensive view of the map, and is not an effort of economic classification, which for most of them would be quite impossible. The sizes refer to the presumed importance of the ore deposit, and has nothing to do with the extent of the mining operations. Mines and deposits out of work during the period 1913-1923 have been separately marked (see the legend), also deposits which were formerly of much greater importance than now. For the smallest mines and deposits no distinction has been made in these respects. Among them are represented partly those, which are in reality unworkable, partly those which are little investigated.

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.

Era:	Proterozoic	Period:	Mesoproterozoic
Dating:		Method:
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.