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	THE ???? DATABASE
	Occurence 0 - 000 FEIL
	(Object Id: ) (Last updated: 06.02.2017)

Operations

	From - To	Activity	Comments
	2007 - 2007	Geophysics	Company/Institution :GEXCO Norge AS
			TEM magnetometry
	2008 - 2009	Geology	Company/Institution :NGU
	2009 - 2009	Sampling	Company/Institution :NGU

Mineralization

	Era:	Proterozoic	Period:	Neoproterozoic
	Genesis:	Volcex	Form:	Layer
	Main texture:	Banded	Min. distribution:	Irregular (scattered)

Main grain size:

Fine grained (< 1 mm)

Main alteration:

Sericitisation

	Strike/Dip:		Direction:
			Plunge:

Stratigraphic classification of host rock

Era:

Proterozoic

Period:

Neoproterozoic

	Province:	Caledonides
	Geotec.unit:	Rødingsfjell Nappe Complex
	Tectonic complex:
	Igneous complex:

Group:

Formation:

Mineralogy

	Relationship	Mineral	Amount
	Gangue mineral	Quartz	Major mineral (>10%)
	Gangue mineral	Muscovite	Major mineral (>10%)
	Ore mineral	Pyrite	Major mineral (>10%)
	Ore mineral	Sphalerite	Subordinate mineral (1-10%)
	Ore mineral	Galena	Subordinate mineral (1-10%)
	Ore mineral	Chalcopyrite	Accessory mineral (<1%)

Lithology:

	Relationship	Rock	Origin
	Host rock	Muscovite gneiss	Extrusive
			Metamorphic facies :Amphibolite

Information(s) in free text format

Free text

Det er en mineralisert sone oppe i en bratt åsside på nordsiden av Hellerfjelltjønna. Mineraliseringen ligger innenfor en langstrakt sone av sulfid-impregnerte muskovittgneisser som strekker seg fra Stangfjellet i nord til Hellerfjellet i sør, mer enn 20 km langs strøket. Det har tidligere vært gjort undersøkelser på tre lokaliteter innen denne sonen: Stangfjellet, Rognhaugbekken og Hellerfjellet. Kartleggingen i 2008-2009 resulterte i funn av ytterligere tre mineraliseringer: Avanbekken, Hellerfjelltjønna og Stangfjellet Sør. Det er rasfarlig oppe i den stupbratte skrenten/åsen og det er derfor vanskelig å se hvor mektig sonen er. Det er rast ut en rekke blokker bestående av kvarts-sericittskifer med svak pyrittimpregnasjon og noe sinkblende og blyglans i den østlige delen. Bærbar XRF viste opptil 1.50 % Zn og 5.68 % Pb. Det ble tatt en prøve til lab-analyse og denne gav 0.28 % Zn og 0.14 % Pb. Lengst i vest kommer en opp til sonen og der er den minst 10 meter mektig. Her ble det imidlertid ikke funnet sink eller bly med bærbar XRF. Sonen har en utstrekning på mer enn 300 meter langs strøket.

Bibliography:

From NGU's Reference Archive:

Bjerkgård, Terje; Marker, Mogens; Slagstad, Trond; Solli, Arne , 2013

	The Mofjell project: summary and conclusions

;Norges geologiske undersøkelse;RAPPORT;NGU-rapport; No.2013.048;87 pages

Abstract:

The Mofjell project commenced in 2008 as a cooperation between GEXCO Norge AS, the county administration of Nordland and NGU. As GEXCO faced financial difficulties the external funding ended in 2009. The project area included Mofjellet and the eastern part of Plurdalen, an area with a large potential for economic sulfide deposits with Zn, Cu, Pb, Ag and Au. NGU has focused on establishing the geological setting of the Mofjell Group and its relation to ore formation. Another very important goal has been to assess the potential for economic ore deposits in the area, including enrichment of precious metals. On the basis of lithological observations and geochemistry, the Mofjell Group consists of a largely bimodal volcanic-sedimentary assemblage formed in an island-arc to back-arc setting. The data also show that the proportion of felsic volcanic rocks is much higher than previously described. A bimodal volcanic suite mixed with sediments is a geological environment which is regarded as favorable for both rich and large sulfide deposits.

Fieldsamples

	Sample No.	Sample type	Miscellanrous
	STANGFJELLET-07	Bedrock	Sampler: T. Bjerkgård/...Stored: Løkken Comment: Quartz-sericite schist with scattered pyrite, sphalerite and galena No. of registrated element analyses = 1

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

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The fact sheet was created on 06.05.2024

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