English version
	INDUSTRIMINERALDATABASEN
	Registrering 1867 - 308 Haugsnesdalen
	(Objekt Id: 7637) (Sist oppdatert: 31.08.2022)

Mineralisering

	Æra:	Proterozoikum	Periode:	Paleoproterosoikum
	Genese:	Metamorfogen	Form:	Linse
	Hovedtekstur:	Granoblastisk	Min. fordeling:	Uregelmessig

Kornstørrelse:

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	Strøk/Fall:		Retning:
			Feltstupning:

Stratigrafisk klassifikasjon av vertsbergart

Æra:

Proterozoikum

Periode:

Paleoproterosoikum

	Provins:
	Geotek.enhet:
	Tektonisk complex:
	Intrusivt komplex:

Gruppe:

Formasjon:

Opplysning(er) i fritekstformat

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This showings is located few meters east of the road, its seen today as a 2.5x1.5 meter water filled hole, with an adjacent spoil heap of 3x3 metres. Very little graphite schits is visible, but graphite bearing rocks in road cuts not far from this showing. This deposits is part of the continous geophysical anomaly, that is seen from Haugsneset in the sout to Kverfjorddalen in the north. See Rønning et al 2018 & 2019 for details

Litteraturfortegnelser:

Fra NGU's Referansearkiv.:

Rønning, J.S.; Gautneb, H.; Larsen, B.E.; Knezevic, J.; Baranwal, V.C.; Elvebakk, H.; Gellein, J.; Ofstad, F.; Brönner, M. , 2018

	Geophysical and geological investigations of graphite occurrences in Vesterålen and Lofoten, Northern Norway 2017

;Norges geologiske undersøkelse;RAPPORT;NGU-rapport; No.2018.011;180 sider

Abstrakt:

As a part of the MINN project (Minerals in Northern Norway), a helicopter-borne geophysical survey was performed in Lofoten and Vesterålen in 2013. Electromagnetic data from this survey showed up anomalies that may be caused by large graphite mineralisation. With financial support from Nordland County, NGU has performed geophysical and geological follow-up work to 1) confirm the existence of graphite and 2) Briefly evaluate the quantity and quality of graphite structures. The project started in 2015 and the results from the first two years are reported by Gautneb et al. (2017) and Rønning et al. (2017). Follow-up work performed in 2017 is reported in this report. 15 locations have been investigated in total in 2017. The degree of detail in these studies varies from just a few lines of simple electromagnetic measurements (EM31) to electric measurements such as Self Potential (SP), Charged Potential (CP) and Electric Resistivity Traversing (ERT) in combination with Induced Polarisation (IP). In two areas, Sommarland and Haugsnes in Bø municipality, two short core drilling bore holes were made. The selection of follow-up objects was based on both magnetic and electromagnetic data from helicopter-borne measurements. All results from the 2017 work are reported here. Where possible, the volume of graphite is estimated based on the total strike length, the width of individual zones (from drilling, observations and width of EM31 measurements) and an assumed depth extent of 100 m. In these areas, an estimation of graphite tonnage is also given.

Rønning, J.S.;Gautneb, H.; Larsen, B.E.; Baranwal, V.C.; Davidsen, B.; Engvik, A.K.; Gellein, J.; Knezevic, J.; Ofstad, F.; Xiuyan Ren; Viken, G. , 2019

	Geophysical and geological investigations of graphite occurrences in Vesterålen, Northern Norway, in 2018 and 2019

;Norges geologiske undersøkelse;RAPPORT;NGU-rapport; No.2019.031;212 sider

Abstrakt:

Several potential graphite occurrences in Vesterålen were selected for follow-up work based on helicopter-borne geophysical data. The purpose for this is to confirm the existence of the graphite and next to briefly evaluate the quality and quantity of the graphite-bearing structures. The goal for the project, which is sponsored by Nordland county administration, is to increase the knowledge of each individual graphite occurrence. By doing so, the interest in graphite prospecting in Northern Norway may increase, effective prospecting can be implemented, and land planning can be developed with appropriate regard for areas with potential for economic graphite.

Gautneb, Håvard; Rønning, Jan Steinar; Engvik, Ane K.; Henderson, Iain H.C.; Larsen, Bjørn Eskil; Solberg, Janja Knezevic; Ofstad, Frode; Gellein, Jomar; Elvebakk; Harald; Davidsen, Børre , 2020

	The graphite occurrences of northern Norway, a review of geology, geophysics and resources

;ARTIKKEL;Minerals; No.7(10);24 s. sider

Abstrakt:

Artikkel i Minerals 2020 nr. 7 vol. 10. Abstract: There are three provinces in Northern Norway in which occurrences of graphite are abundant; the Island of Senja, the Vesterålen archipelago, and the Holandsfjorden area. From these provinces, we report graphite resources from 28 occurrences. We use a combination of airborne and ground geophysics to estimate the dimensions of the mineralized areas, and, combined with sampling and analysis of the graphite contents, this gives us inferred resources for almost all the occurrences. The average TC (total carbon) content is 11.6%, and the average size is 9.3 Mt or 0.8 Mt of contained graphite. We demonstrate that the Norwegian graphite occurrences have grades and tonnages of the same order of magnitude as reported elsewhere. The graphite-bearing rocks occur in a sequence that encompasses carbonates, meta-arenites, acid to intermediate pyroxene gneisses, and banded iron formations metamorphosed into the granulite facies. Available radiometric dating shows that the graphite-bearing rocks are predated by Archean gneisses and postdated by Proterozoic intrusions of granitic to intermediate compositions.

Feltprøver

	Prøvenr.	Prøvetype	Diverse
	hg23-15	Fastfjell	Prøvetaker: Håvard Gautneb Kommentar: Haugnesdal rik grafittskifer men tynn horisont, koordinater: 488623 7622905, innhold av grafittisk karbon: 10.6% Antall registrerte spesialanalyser = 1

NB! Alle analyseverdier er vist i slutten av utskriften.:

Navn på prøvepunkt: hg24-16

(Objekt Id: 33860 308,00,01)

Lokalisering

Fylke:

Nordland

Kommune:

Bø (1867)

Kart 1:50000:

Stokmarknes (1132-2)

Kart 1:250000:

Svolvær

Koordinatsystem:

EU89-UTM Zone 33

Øst:

488562 m.

Nord:

7620430 m.

Lengdegrad:

14.7179310

Breddegrad:

68.6954560

Kartvisning

Ressurs

Ressurstype:

Grafitt

Ressursundertype:

Grafitt

Feltprøver

	Prøvenr.	Prøvetype	Diverse
	hg24-16	Fastfjell	Prøvetaker: Håvard Gautneb/...Lager: Løkken 200g Kommentar: Medium grade graphite schists, NGU lab sample nr. 140124 Antall registrerte spesialanalyser = 2

NB! Alle analyseverdier er vist i slutten av utskriften.:

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Analyseresultater

fra

Forekomstområde 1867 - 308 Haugsnesdalen

Spesial analyser

Prøvenr.	Prøvetype	Hva som er målt	Resultat
hg23-15	Fastfjell	Karboninnhold	10.6%
hg24-16	Fastfjell	Svovelinnhold	.07%
hg24-16	Fastfjell	Karboninnhold	17.7%

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Faktaarket ble generert 23.04.2024

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

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