Fact Sheet for <b>Occurence 3107 - 638 Bjørnerød</b>

					Norsk versjon
	THE NATURAL STONE DATABASE
	Occurence 3107 - 638 Bjørnerød
	(Object Id: 9965) (Last updated: 16.02.2010)

Belongs to the Province: Iddefjord granite

Location

County:

Østfold

Municipality:

Fredrikstad (3107)

Map 1:50000:

Vannsjø (1913-4)

Map 1:250000:

Oslo

Coordinate system:

EU89-UTM Zone 32

East:

612628 m.

North:

6571484 m.

Longitude:

10.9759080

Latitude:

59.2672830

Show on map

Resource

	Resource Type:	Granite and other igneous rocks	Resource Subtype:	Granite
			Brickstone(Y/N):	N

Importance

Raw material meaning:

Little Importance (reg. 18.02.2015)

Historical:

Yes , (Confirmed 13.jul.2005 by Leif Furuhaug)

Resources and production

	Activity:	Stone quarrying	Reserves:
	Operating method:	Open pit mining	Historical production:

Deposit rock

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Information(s) in free text format

Description

Innenfor en diameter på ca. 250 m rundt toppen av Hattefjellet er det mange brudd. De fleste er drevet kun på øverste benken, dvs. < 1 m avsenkning. Men noen få har 2-3 m avsenkning (se bilder). Granitten er lys rødlig og finkornig, og antas å være brukt til produksjon av gate- og kantstein.

Location

Man må kjøre RV 109 til Rolvsøy, 7-8 km nord for Fredrikstad. Derfra går en vei vestover mot Rolvsøyhallen hvor en må parkere og gå videre vestover etter lysløype (skogsvei) mot trigpkt. med høyde 112 moh. Bruddene ligger i området rundt trig.punktet.

Photo(s) from the Deposit area:

Photo no. 1 showing Det største bruddet"

Photo no. 2 showing Bruddvegg mot vest"

Bibliography:

From NGU's Reference Archive:

Oxaal, John , 1916

Norsk granit

;Norges geologiske undersøkelse;TIDSSKRIFTARTIKKEL;NGU; No.76;1-220 pages

Abstract:

This work is a report of granite and the granite industry in Norway. It contains a description of the various fields of granite and similar rocks from a scientific as well as from a technical and economical standpoint. The geological occurrence of the various rocks, their chemical and mineralogical composition, are thoruoughlyoughly treated, also the questions of practical interest, as the quality and other technical properties, further the problems of location and conditions for transport, conditions for quarrying and otherquestions of interest in the utilization of the various occurrences of granite. Granite: This chapter consideres first the mineralogical and chemical composition of the granite, and the various types of granite resulting from the varying composition; thereafter the most important structural types and how these are dependent on the geological appearance of the rock. Lakkolites and other froms assumed by granite masses when injected into the crust of the earth, are mentioned; some examples of beautifully formed lakkolites are also mentioned. The question of sheet structure and rift in the granite are of great importance in its utilization, and are of interest both practically and theoretically.

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