Fact Sheet for <b>Occurence 4014

					Norsk versjon
	THE INDUSTRIAL MINERAL DATABASE
	Occurence 4014 - 348 Svenum
	(Object Id: 8456) (Last updated: 04.02.2008)

Location

County:

Telemark

Municipality:

Kragerø (4014)

Map 1:50000:

Kragerø (1712-4)

Map 1:250000:

Arendal

Coordinate system:

EU89-UTM Zone 32

(Coordinates NOT confirmed)

East:

517828 m.

North:

6535548 m.

Longitude:

9.3099590

Latitude:

58.9591880

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Resource

Resource Type:

Feldspar

Resource Subtype:

Pegmatitic feldspar

Importance

Raw material meaning:

Not Assessed (reg. 18.02.2015)

Resources and production

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

Operations

From - To Activity Comments

1910 - 1950 Regular production

Mineralization

Genesis: Form:

Main texture: Min. distribution:

Main grain size:

Strike/Dip: Direction:

Plunge:

Stratigraphic classification of host rock

Era: Period:

Province:

Geotec.unit:

Tectonic complex:

Igneous complex:

Group: Formation:

Mineralogy

Mineral Amount

Feldspar

Information(s) in free text format

Free text

I utmarka vest for gården Svenum ble det drevet dagbrudd og underjordsdrift på kvarts og feltspat i en pegmatitt. Pegmatitten harform av en linse med vestlig strøk og et nordlig fall på omkring 45 grader. Pegmatitten er 100 m lang og største bredde er omkring 20 m. Bruddet var i virksomhet mellom 1910 og 1950 og tunnelldriften hadde en lengde på omkring 100 m, en gjennomsnittlig høyde på 10 m og bredde på 10 m. Hovedmineralene er kvarts og kali-natronfelspat som opptrer i soner. Skriftgranitt er også tilstede. Ref.: O. Andersen Morten Rugtveit

Bibliography:

From NGU's Reference Archive:

Andersen, Olaf , 1931

Feltspat II. Forekomster i fylkene Buskerud og Telemark, i flere herreder i Aust-Agder og i Hidra i Vest-Agder.

;Norges geologiske undersøkelse;TIDSSKRIFTARTIKKEL;NGU; No.128B;1-109 pages

Abstract:

Summary s. 151. Feldspar deposits in Southern Norway. (Feltspat II by Olaf Andersen and Feltspat III by Tom F.W. Barth) A few years ago one of the writers published a general outline of the properties, mode of occurrence, exploitation and uses of feldspar with special reference to the Norwegian feldspar industry (Olaf Anderesn, Feltspat I, Norges geologiske undersøkelse, Nr. 128A, 1926). To that publication the reader is referred for general in- formation regarding the feldspar industry of Norway. In the present publi- cation brief descriptions are given of 262 individual feldspar deoposits, all situated in the part of Southern Norway that extends, generally in a rather narrow zone, along the coast westward from the neighbourhood of Kragerø to the island Hidra near Flekkefjord. The deposita described lie in the counties Buskerud, Telemark, Aust-Agder and Vest-Agder, and are distributed over a large number of local districts (herreder). The most important districts at present are those in the neighbourhood of Kragerø ((Bamble, Skåtøy and Sannidal), those along the coast between Risør and Arendal (especially Søndeled, Holt and Froland), and the two districts north of Kristiansand (Iveland and Evje). Each description contains information about the dimensions and general attitude of the pagmatite body and the feldspar.

	From - To	Activity	Comments
	1910 - 1950	Regular production

	Genesis:		Form:
	Main texture:		Min. distribution:

	Province:
	Geotec.unit:
	Tectonic complex:
	Igneous complex: