Fact Sheet for Deposit Area 815

					Norsk versjon
	THE INDUSTRIAL MINERAL DATABASE
	Deposit Area 815 - 328
	(Last updated 19.jan.2024)

Name of Deposit Area : Malmtangen

(Object Id : 0815,328,00,00)

Location

County :

Telemark (08)

Municipality :

Kragerø (0815)

Map 1:50000:

Kragerø (1712-4)

Map 1:250000:

Arendal

Marking point:

Longitude:

9.5015140

Latitude:

58.8954200

EU89-UTM Zone 32

(Coordinates NOT confirmed)

X-coord:

528900 m.

Y-coord:

6528515 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: Little Importance (reg. 18.02.2015)

Economical: Minor interest , (Confirmed 15.jan.2008 by Jan Egil Wanvik)

Operations

From - To Activity Comments

1900 Regular production

Mineralization

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Information(s) in free text format

Free text

Pegmatittforekomsten lå i følge O. Andersen ca 300 m N for gården Malmtangen. Transporten fra bruddet har vesentlig foregått ved vinterkjøring. Pegmatitten er ensteiltstående gang som stryker i nord-nordvestlig retning og er antagelig sammenhengende fra et punkt ved Langåresund like vest for gården til litt nordenfor bruddet. Pegmatitten ved det gamle brudd har vært 10-15 m bred. Bruddet danner en synk, 25 m lang, 8 m bred og muligens 10 m dyp. Rundt århundreskiftet 1900 var det drift her. Transporten har vesentlig foregått med skip som var fortøyd i Langårsund. Det var hovedsaklig kalinatronfeltspat som ble utvunnet. Det var drift på to lokaliteter, hvorav den ene var ved Malmtangen og den andre ved Svaneflekken.

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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