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	THE ORE DATABASE
	Occurence 4034 - 058 Raudbergnuten
	(Object Id: 5465) (Last updated: 28.03.2020)

Operations

	From - To	Activity	Comments
	2006 - 2006	Sampling	Company/Institution :NGU

Mineralization

	Era:	Proterozoic	Period:
	Genesis:	Hydrothermal vein	Form:	Lens
	Main texture:	Fracture filling	Min. distribution:	Irregular (scattered)

Main grain size:

Medium grained (1-3 mm)

Main alteration:

No country rock alteration

	Strike/Dip:	30	Direction:
			Plunge:

Stratigraphic classification of host rock

Era:

Proterozoic

Period:

Paleoproterozoic

	Province:	South Norwegian Basement Province
	Geotec.unit:	Setesdal-Hallingdal Complex
	Tectonic complex:	Vrådal Complex
	Igneous complex:

Group:

Formation:

Mineralogy

	Relationship	Mineral	Amount
	Gangue mineral	Quartz	Major mineral (>10%)
	Gangue mineral	Feldspar	Subordinate mineral (1-10%)
	Ore mineral	Chalcopyrite	Major mineral (>10%)

Lithology:

	Relationship	Rock	Origin
	Wall rock	Granitic gneiss	Intrusive Original rock :Granite
	Wall rock	Metagabbro	Intrusive Original rock :Gabbro

Structures

	Location:	Type:	Orientation(360 gr.):	Relation to min.:
	Wall rock	Foliation	Strike/Dip :114 / 80	Pre-mineralisation ;...Effect :None

Information(s) in free text format

Free text

En sti går fra Skosletjørni opp langs vestsida av Raudbergnuten. Hovedforekomsten består av en 25-30 m lang, 1-2 m bred og minst 1,5-2 m høy, hovedsakelig vannfylt dagskjæring på tvers av ryggen, ca. 300 m vestnordvest for selve toppen av Raudbergnuten. Skjæringa har retning 30º og ligger over tregrensen. Den tilsvarer trolig Raudbergnuten skjerp I beskrevet av Dons (1963). Hovedbergarten i området er granittisk leukogneiss med hyppig kvartsganger i dm- og m-skala. En fin- til middelskornet, foliert (114º/80º) metagabbro danner selve ryggen og ligger midt i skjæringa. Den er minst 15 m mektig. Det kan se ut som en kvartsgang opptrer som en linse eller plugg midt i skjerpet hvor det er en relativt dyp synk. Kobberkis opptrer disseminert og på strenger i den grovkornete kvartsen i stuffer på tippen. Mindre mengder feltspat og lys glimmer finnes også i kvartsen. Forekomsttypen har ingen økonomisk interesse i dag.

Bibliography:

From NGU's Reference Archive:

Dons, Johannes A. , 1963

	De prekambriske bergarter i Telemark, I. Gruber og skjerp innen gradeteigkart E36V Kviteseid.

;Norges geologiske undersøkelse;TIDSSKRIFTARTIKKEL;NGU; No.216;1-80 pages

Abstract:

Approximately 115 mines and claims have been examined in the years 1941-1961 during regional geological mapping of the Kviteseid quadrangle. The map area covers a part of the "Thelemark-Sætersdal ore province" established by prof. J.H.L. Vogt in 1886. The oldest mine in the area, opened in the year 1524, was worked for silver bearing chalcopyrite and bornite. Other mines have been worked for gold, native copper and silver, molybdenite, galena, arsenopyrite, bismuthinite. All the mines have long since been abandoned and most of the surface workings are overgrown and difficult to find. The 15 native copper and silver deposits (which also contain vanadium minerals) form a separate group. They are all situated along the contact between a sandstone and an overlying basalt, the ore being confined to the sandstone. Most of the other deposits are of Quartz vein type. In quartzites which cover the greatest part of the map area, most of the quartz veins are barren. The great abundance of ore minerals in quartz veins in basic lavas and basic sills may be due to favourable pH conditions in these rocks. The galena deposits are found within a limited area close to a penetrating granite. The ore mineral paragenese in some of the deposits may have been formed under hypothermal to mesothermal conditions whereas other possibly originated at lower temperatures.

Marstrander, H.

	Beskrivelse av gruber og skjerp i Kviteseid i Telemark.

;Norges geologiske undersøkelse;FAGRAPPORT;Bergarkivet; No.BA 2647;35 pages

	Abstract:
	Følgende forekomster er malmgeologisk beskrevet: Finnekos, Langmyr, Bjørnbas, Johnsli, Sølvbergsli, Bjørgustøl, Åneroe, Toråsdækkan, Byggstøl, Lintjern, Raubergmutern, Myran, Skolteberg, Fløta, Dal (Lundevassdal), Haugen, Bygland, Soli, kleiv og Kroksmyr.

Fieldsamples

	Sample No.	Sample type	Miscellanrous
	TE0078.02	Dump	Sampler: J.S. Sandstad/...Stored: L¿kken/...Size(kg): 2 Comment: Chalcopyrite dissemination/veinlets in quartz No. of registrated element analyses = 1

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

Name of Locality: Raudbergnuten V

(Object Id: 17761 58,01,00)

Location

County:

Telemark

Municipality:

Tokke (4034)

Map 1:50000:

Bandak (1513-1)

Map 1:250000:

Skien

Coordinate system:

EU89-UTM Zone 32

East:

461489 m.

North:

6586352 m.

Longitude:

8.3215170

Latitude:

59.4140280

Show on map

Resource

	Resource Type:	Base metals (Cu,Zn,Pb,Fe sulphides, As,Sb,Bi,Sn)	Resource Subtype:	Copper
			Element(s):	Cu

Resources and production

	Activity:	Pitting	Reserves:
	Operating method:		Historical production:

Mineralogy

	Relationship	Mineral	Amount
	Gangue mineral	Quartz	Major mineral (>10%)
	Ore mineral	Chalcopyrite	Major mineral (>10%)

Lithology:

	Relationship	Rock	Origin
	Host rock	Granitic gneiss	Intrusive Original rock :Granite

Structures

	Location:	Type:	Orientation(360 gr.):	Relation to min.:
	Host rock	Foliation	Strike/Dip :350 / 60	Pre-mineralisation ;...Effect :None

Information(s) in free text format

Free text

Lokaliteten representerer to mindre skjerp vestnordvest for hovedskjerpet hvor det er sprengt i den samme granittiske gneissen med hyppige kvartsganger og ¿årer. Lokalt finnes pen kobberkismineralisering i disse kvartsårene, men størrelsen er ubetydelig.

Bibliography:

From NGU's Reference Archive:

Dons, Johannes A. , 1963

	De prekambriske bergarter i Telemark, I. Gruber og skjerp innen gradeteigkart E36V Kviteseid.

;Norges geologiske undersøkelse;TIDSSKRIFTARTIKKEL;NGU; No.216;1-80 pages

Abstract:

Approximately 115 mines and claims have been examined in the years 1941-1961 during regional geological mapping of the Kviteseid quadrangle. The map area covers a part of the "Thelemark-Sætersdal ore province" established by prof. J.H.L. Vogt in 1886. The oldest mine in the area, opened in the year 1524, was worked for silver bearing chalcopyrite and bornite. Other mines have been worked for gold, native copper and silver, molybdenite, galena, arsenopyrite, bismuthinite. All the mines have long since been abandoned and most of the surface workings are overgrown and difficult to find. The 15 native copper and silver deposits (which also contain vanadium minerals) form a separate group. They are all situated along the contact between a sandstone and an overlying basalt, the ore being confined to the sandstone. Most of the other deposits are of Quartz vein type. In quartzites which cover the greatest part of the map area, most of the quartz veins are barren. The great abundance of ore minerals in quartz veins in basic lavas and basic sills may be due to favourable pH conditions in these rocks. The galena deposits are found within a limited area close to a penetrating granite. The ore mineral paragenese in some of the deposits may have been formed under hypothermal to mesothermal conditions whereas other possibly originated at lower temperatures.

Fieldsamples

	Sample No.	Sample type	Miscellanrous
	TE0078.01	Dump	Sampler: J.S. Sandstad/...Stored: L¿kken/...Size(kg): 2 Comment: Chalcopyrite aggregates in quartz 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

Deposit Area 4034 - 058 Raudbergnuten

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#
TE0078.01	Dump	11280	-100	100	-10	-10	11.0	70.0
TE0078.02	Dump	8140	-100	100	-10	10	13.0	170.0

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Sample No.	As*	Cd*	Mo*	Sb*	Bi*	Cr*	Mn*	Fe%	W*
TE0078.01	-100	-10.0	10.00	10	200	-10	100	1.88	-10
TE0078.02	-100	-10.0	170.00	-10	-100	-10	100	1.63	-10

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Sample No.	Sr*	P*	Ca*
TE0078.01	-10.0	0	0
TE0078.02	-10.0	0	0

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The fact sheet was created on 25.04.2024

Questions or comments regarding the fact sheet can be emailed to: ressursdatabaser@ngu.no

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