Fact Sheet for <b>Occurence 3105 - 313 Sætreåsen</b>

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	THE INDUSTRIAL MINERAL DATABASE
	Occurence 3105 - 313 Sætreåsen
	(Object Id: 8814) (Last updated: 01.10.2024)

Location

County:

Østfold

Municipality:

Sarpsborg (3105)

Map 1:50000:

Sarpsborg (1913-1)

Map 1:250000:

Oslo

Coordinate system:

EU89-UTM Zone 32

East:

628197 m.

North:

6572679 m.

Longitude:

11.2495210

Latitude:

59.2735780

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Resource

Resource Type:

Silica

Resource Subtype:

Pegmatitic quartz

Importance

Raw material meaning:

Not Assessed (reg. 18.02.2015)

Mineralization

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Information(s) in free text format

Free text

Det er muligens dette bruddet Broch (1934) omtaler som "Setre 1": "Bruddet ligger i utmark i sydøstskråning av Setreåsen." Bruddet er en "åpen, vestover løpende skjæring, omtrent 20x4 m vid, innerst (vestligst) 4-5 m dyp. Ytterst er der en vannfylt synk. Gruva var i drift sommeren 1932, og det ble da tatt ut ca 1000 tonn "sekunda kvarts" levert til Hafslund fabrikker og 150 tonn feltspat av "2. og 3. sort" levert til De forenede Feldspatsbruds mølle i Sarpsborg.

Location

Punktet bør flyttes ca 70 m mot ØSØ.

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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