Fact Sheet for Deposit Area 814

					Norsk versjon
	THE INDUSTRIAL MINERAL DATABASE
	Deposit Area 814 - 328
	(Last updated 05.feb.2008)

Name of Deposit Area : Kjørstad Vestre

(Object Id : 0814,328,00,00)

Location

County :

Telemark (08)

Municipality :

Bamble (0814)

Map 1:50000:

Kragerø (1712-4)

Map 1:250000:

Arendal

Marking point:

Longitude:

9.5892260

Latitude:

58.9522380

EU89-UTM Zone 32

(Coordinates IS confirmed)

X-coord:

533898 m.

Y-coord:

6534883 m.

Commodity

Main Type:

Feldspar

Sub Type:

Pegmatitic feldspar

Production

Activity:	Mining	Reserves:
Prod. method:	Open pit mining	Production:
Prod. status:	Disused, closed	Volume of dump:

Importance

Public: Not Assessed (reg. 18.02.2015)

Economical: Not classified/evaluated

Products

Element/product Crude ore grade or quality

PEGFEL %

Mineralization

Era: Period:

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Main grain size:

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Plunge:

Stratigraphic classification of host rock

Era: Period:

Province:

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Igneous complex:

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Information(s) in free text format

Free text

I følge O. Andersen: Ved gården Vestre Kjørstad sør for ødegården verk ligger to pegmatittbrudd. Det vestligste bruddet ligger omkring 300 m SØ for gården. Det har tidligere (før 1930) vært en betydelig utvinning av feltspat (både kvartsfattig og kvartsholdig) samt ren kvarts fra denne forekomsten. Forekomsten er 30 x 60 m og bruddet er en rund synk ca 15 m i tverrsnitt og ca 10 m dyp. Pegmatitten består av kali-natronfeltspat i stolper på over 1 m og kvartsstolper av lignende størrelse. Det andre bruddet ligger 150 m NØ for foregående, med lignende mineralogi. Denne har kun vært drevet i beskjedent omfang.

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.

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