Fact Sheet for <b>Occurence 1111

					Norsk versjon
	THE INDUSTRIAL MINERAL DATABASE
	Occurence 1111 - 302 Dydland
	(Object Id: 7970) (Last updated: 16.08.2016)

Location

County:

Rogaland

Municipality:

Sokndal (1111)

Map 1:50000:

Sokndal (1311-4)

Map 1:250000:

Mandal

Coordinate system:

EU89-UTM Zone 32

East:

344795 m.

North:

6465376 m.

Longitude:

6.3515360

Latitude:

58.3019150

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Resource

Resource Type:

Other industrial minerals

Resource Subtype:

Kaolin

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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Information(s) in free text format

Free text

Langs hengsiden av en meget porfyrittisk diabasgang er anorthosittbergarten meget kaolinisert. Det har på dette sted vært et lite uttak av kaolin. Kaolinet er imidlertid ganske ureint, og har stort innhold av faste partikler av feltspat. I dag er det ikke noe kaolin tilbake, og forekomsten sees kun ut fra opptreden av en lys forvitringsjord. Forekomsten er tolket til å være en hydrotermalt dannet kaolinisering der den hydrotermale omvandling har vært konsentert i tilknytning til diabasgangene. Selve hoveduttaket er gjort fra en grop som er 20 meter lang og 5 meter bred og har sin største dybde på 3 meter. Det har også vært uttak på 3 andre steder i nærheten. I dag må forekomsten bare anses som en geologisk kurositet.

Bibliography:

From NGU's Reference Archive:

Reusch, Hans , 1901

En forekomst af kaolin og ildfast ler ved Dydland nær Flekkefjord

;Norges geologiske undersøkelse;TIDSSKRIFTARTIKKEL;NGU; No.32;99-103 pages

Abstract:

Forkortet: The lower part of the Sire river in Southwestern Norway has the appearance of a fjord 4 km long. Not far from it is Jøsingfjord only 2 km long. The peninsula between these two fjords is as a whole rather low and consist of an almost endless number of small rounded knolls. The rock is norite. The farms are humble and the distances between them are long, woods do not occur. Across the peninsula from SE to NW there is a small valley. The breadth may be estimated at about 70 m and the height of the sides at about 30 m. The kao- lin occurs in the bottom of this valley. At some places the prevalent rock in it is a dyke of diabase, as shown in the diagram on p.100, where L signifies norite, D a dyke of diabase 5 m wide and II the kaolin. The kaolin occurs here in vein-like parts along the borders of the diabase and in the norite. The principal mass of the kaolin is found in the NW division of the said valley. No diabase has hitherto been found there but the bottom of the valley seems to consist of kaolin in its whole breadth. The two pictures nethermost on pp.100 and 101 are from here. At the places marked 1,2,3,4 diggings have been made. The rising ground behind the houses in the next drawing consists of kaolin. The section on p.101 is from the trench 2.

Vrålstad, T. , 1975

Rapport fra befaring av Dydland kaolinforekomst, Soknedal, 9-10/10 1975

;Norsk Hydro / NGU;RAPPORT;NH-arkivet; No.NH 232A;6+vedlegg pages

Abstract:

Kopi i perm NH 37 og NH 181

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