English version
	MALMDATABASEN
	Forekomstområde 806 - 042
	(Sist oppdatert 30.jun.2022)

Betydning

Offentlig:

Not Assessed (reg. 18.02.2015)

Economical:

Ikke vurdert

Mineralization

	Era:		Period:
	Dating:		Method:
	Genesis:		Form:
	Main texture:		Min. distribution:

Main grain size:

Main alteration:

	Strike/Dip:		Direction:
			Plunge:

Stratigraphic classification of host rock

Era:

Period:

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

Group:

Formation:

Opplysning(er) i fritekstformat

Fri tekst

I følge Larsen (1993) ble det Foslie (1925) kaller Tangeråsen skjerp mutet første gang i 1888, men har også vært drevet som jernforekomst tidligere. I 1901 ble det utført en del arbeider: Horisontalt inn en bratt skråning er det drevet en 20 m lang dagstrosse, inntil 10 m høy og 1-1,5 m bred, som fortsetter i en 12 m lang stoll. Ved stollens begynnelse er en 2-3 m dyp synk.

Bibliography:

From NGU's Reference Archive:

Larsen, Alf Olav , 1993

	Gruver og skjerp i Skien

;Norges geologiske undersøkelse;FAGRAPPORT;Bergarkivet; No.BA 7706;72 pages

Larsen, Alf Olav , 1993

	Gruver og skjerp i Skien.

;Forfatteren;BOK;72 s. pages

Foslie, Steinar , 1925

	Syd-Norges gruber og malmforekomster.

;Norges geologiske undersøkelse;TIDSSKRIFTARTIKKEL;NGU; No.126;1-89 + ka pages

Abstract:

On the map accompanying this paper all the mines and ore deposits of Southern Norway are collected for the first time.The material has been gathered from printed and unprinted sources, communications from mining engineers and geologists, and through personal visits. Included are all mines and ore deposits of former, present and future importance. Among the 1407 deposits on the map, there are furthermore included all of doubtful value and many which are quite unworkable, but of geological interest, or those which mark the distribution of ore bearing formations. For this reason it has been necessary to mark the deposits with signs of different size. The object is only to facilitate a comprehensive view of the map, and is not an effort of economic classification, which for most of them would be quite impossible. The sizes refer to the presumed importance of the ore deposit, and has nothing to do with the extent of the mining operations. Mines and deposits out of work during the period 1913-1923 have been separately marked (see the legend), also deposits which were formerly of much greater importance than now. For the smallest mines and deposits no distinction has been made in these respects. Among them are represented partly those, which are in reality unworkable, partly those which are little investigated.

Fieldsamples

	Sample No.	Sample type	Miscellanrous
	TE0217.01	Dump	Sampler :P. Ihlen Kommentar :cm brede kvarts-karbonatårer med mm sinkblende korn, samt tynne sinkblendestriper langs kontakten No. of registrated element analyses = 1
	TE0217.02	Dump	Sampler :P. Ihlen Kommentar :Skitten gangkvarts gjennomsatt av tynne massive sinkblende årer No. of registrated element analyses = 1

NB! All analyse values are shown at the end of the printout.:

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Analyse Results

from

Forekomstområde 806 - 042 TANGERÅSEN

Element analyses

( *=parts pr. million, #=parts pr.billion, Negative values means below detection limit value.)

Sample No.	Sample Type	Cu*	Zn*	Pb*	Co*	Ni*	Ag*	Au#
TE0217.01	Dump	137	4100	43	14	-1	.3	-1.0
TE0217.02	Dump	51	31100	20	17	3	.2	-1.0

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Sample No.	As*	Ba*	Mo*	Sb*	Bi*	S%	V*	Fe%	Ce*
TE0217.01	6	-10	3.00	-1	-1	.59	5	10.65	97.00
TE0217.02	4	10	1.00	-1	1	1.30	5		209.00

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Faktaarket ble generert 13.06.2026

Spørsmål eller kommentarer vedrørende faktaarket kan mailes til: ressursdatabaser@ngu.no

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