Fact Sheet for <b>Occurence 3118

					Norsk versjon
	THE INDUSTRIAL MINERAL DATABASE
	Occurence 3118 - 307 Krossby
	(Object Id: 8896) (Last updated: 27.04.2007)

Location

County:

Østfold

Municipality:

Indre Østfold (3118)

Map 1:50000:

Sarpsborg (1913-1)

Map 1:250000:

Oslo

Coordinate system:

EU89-UTM Zone 32

(Coordinates NOT confirmed)

East:

630418 m.

North:

6595392 m.

Longitude:

11.3022290

Latitude:

59.4766980

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Resource

Resource Type:

Feldspar

Resource Subtype:

Pegmatitic feldspar

Importance

Raw material meaning:

Little Importance (reg. 18.02.2015)

Resources and production

	Activity:	Test mining	Reserves:
	Operating method:	Open pit mining	Historical production:

Mineralization

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Stratigraphic classification of host rock

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Information(s) in free text format

Free text

Flere mindre pegmatittganger beskrives å ligge 3-400 m vest for Gården Krossby, ca 1 km nord for Heia stasjon (nedlagt) her er det beskrevet en 3 m bred pegmatittgang. Forekomsten ble drevet rundt 1980-årene på feltspat. Lite kan oppserveres i dag.

Bibliography:

From NGU's Reference Archive:

Broch, Olaf Anton , 1934

Feltspat IV. Forekomster i Akershus og Østfold øst for Glomma.

;Norges geologiske undersøkelse;TIDSSKRIFTARTIKKEL;NGU; No.141;1-119 pages

Abstract:

In this publication, which is a sequel to Feltspat II and III by Olaf Andersen and Tom F.W. Barth, brief and exoteric descriptions and some information on production and history are given of about 180 individual feldspar, quartz, and mica deposits, all of them situated east of the river Glomma in south-eastern Norway. Particulars of purely geological or mineralogical interest are few; most of them are given as footnotes or in the preface, but the minerals of each deposit, exceot quartz, feldspar and mica, are listed. The deposits are cross cutting pegmatite dikes, with a northeastern strike and a steep dip. The dikes exhibit a marked zoning; moreover, they are remarkably free from rare minerals, the occurrences of which seems to be restricted almost entirely to the dikes near the Idefjord (Bohus) granite.

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