Fact Sheet for <b>Occurence 4012

					Norsk versjon
	THE INDUSTRIAL MINERAL DATABASE
	Occurence 4012 - 311 Feset I
	(Object Id: 8437) (Last updated: 12.06.2025)

Location

County:

Telemark

Municipality:

Bamble (4012)

Map 1:50000:

Kragerø (1712-4)

Map 1:250000:

Arendal

Coordinate system:

EU89-UTM Zone 32

East:

531648 m.

North:

6537075 m.

Longitude:

9.5504300

Latitude:

58.9721000

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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:

Products

Element/product Crude ore grade or quality Reg. date

Pegmatitic feldspar % 15.10.2024

Mineralization

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Stratigraphic classification of host rock

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Information(s) in free text format

Free text

Beliggenhet: N58.97210°, Ø9.55043°. Omkring 250 m N for veikrysset Valleveien/E-18 på Feset. 100 m SSØ for Feset vannbasseng, umiddelbart Ø for veien til vannbassenget. Geologiske forhold: Pegmatitten danner en 60 m lang og inntil 12 m bred steiltstående linse med lengderetning NNØ og følger strøket av omgivende amfibolitt. Forekomsten ble beskrevet av Andersen (1931, s. 16). Mineraler: Pegmatitten består av rosa kalifeltspat, til dels i opptil ½ m store individer, samt en del kvarts, plagioklas, litt muskovitt, biotitt (til dels klorittisert), samt spor av zirkon («alvitt»). Arbeid og historie: Bruddet er en 3-10 m bred og inntil 6 m dyp skjæring langs hele pegmatittlinsen i ca. 40 meters lengde. Bruddet er noe gjenfylt i den nordre enden på grunn av veien til vannbassenget. Bruddet var i drift på 1920-tallet.

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.

	Element/product	Crude ore grade or quality	Reg. date
	Pegmatitic feldspar	%	15.10.2024

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