English version
	INDUSTRIMINERALDATABASEN
	Prospekt 1867 - 306 Kvernfjordalen
	(Objekt Id: 7635) (Sist oppdatert: 31.08.2022)

Mineralisering

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

Kornstørrelse:

Middelskornet (1-3 mm)

	Strøk/Fall:		Retning:
			Feltstupning:

Stratigrafisk klassifikasjon av vertsbergart

Æra:

Arkeikum

Periode:

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

Gruppe:

Formasjon:

Opplysning(er) i fritekstformat

Fri tekst

At this locality a compact graphite schits is found with width that varies from 1-3 meters. In parts the graphite ore is very coarse grained. This prospect is part of the same geophysical anomaly that can be followed from Haugsneset and northwards up along the Kvernfjordalen valley. Large part of this several km long sone is overburden. Grades up to about 14% of graphitic carbon is found. In the references detailed geophysical measurements are reported.

Litteraturfortegnelser:

Fra NGU's Referansearkiv.:

Neumann, Henrich , 1952

	Dagbok fra Nord-Norge 26.5 - 19.8 1952

;Norges geologiske undersøkelse;FAGRAPPORT;Bergarkivet; No.BA 7709;16 sider

Rodionov, Alexei; Ofstad, Frode; Stampolidis, Alexandros; Tassis, Georgios , 2013

	Helicopter-borne magnetic, electromagnetic and radiometric geophysical survey at Langøya in Vesterålen, Nordland

;Norges geologiske undersøkelse;RAPPORT;NGU-rapport; No.2013.044;26 sider

	Abstrakt:
	NGU conducted an ariborne geophysical survey in Langøya area in July - August 2013 as part of the MINN-project. This report describes and documents the acquisition, processing and visualization of recorded datasets. The geophysical survey results reported herein are 5650 line km, covering an area of 1050 km2

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.

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, Jan S.; Larsen, Bjørn E.; Elvebakk, Harald; Gautneb, Håvard; Ofstad, Frode; Knezevic, Janja , 2017

	Geophysical investigations of graphite occurrences in Bø and Øksnes municipalities, Vesterålen, Nordland County, Northern Norway 2015-2016

;Norges geologiske undersøkelse;RAPPORT;NGU-rapport; No.2017.014;50 sider

Abstrakt:

Geological and geophysical investigations in Vesterålen were carried out during 2015 and 2016 with additional funds from the Nordland County Administration. A first report (Gautneb, et al., 2017) emphasizes the geological aspects of the graphite prospecting (trenching, sampling, analyses, mineralogy and beneficiation tests). This report describes the results from ground geophysical mapping of graphite mineralisations at five locations in the Vesterålen area. These are: Møkland (UTM 486848 – 7627365), Sommarland (UTM 488080 - 7625780), Kvernfjorddalen (UTM 488445 – 7619975) and Haugsnes (UTM 488600 - 7619375) in Bø municipality and Smines in Øksnes (UTM 498793 – 7639018) municipality.

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.

Feltprøver

	Prøvenr.	Prøvetype	Diverse
	HG43-14	Fastfjell	Prøvetaker: Havard Gautneb Kommentar: Sample of graphit schist, UTMX: 488628 UTMY: 7622908 Antall registrerte spesialanalyser = 1
	HG44-14	Fastfjell	Prøvetaker: Havard Gautneb Kommentar: Sample of graphit schist, UTMX: 488628 UTMY: 7622906 Antall registrerte spesialanalyser = 1
	HG45-14	Fastfjell	Prøvetaker: Havard Gautneb Kommentar: Sample of graphit schist, UTMX: 488628 UTMY: 7622906 Antall registrerte spesialanalyser = 1

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

Navn på prøvepunkt: hg7-16

(Objekt Id: 33865 306,00,01)

Lokalisering

Fylke:

Nordland

Kommune:

Bø (1867)

Kart 1:50000:

Stokmarknes (1132-2)

Kart 1:250000:

Svolvær

Koordinatsystem:

EU89-UTM Zone 33

Øst:

486189 m.

Nord:

7627797 m.

Lengdegrad:

14.6583980

Breddegrad:

68.7614100

Kartvisning

Ressurs

Ressurstype:

Grafitt

Ressursundertype:

Grafitt

Feltprøver

	Prøvenr.	Prøvetype	Diverse
	hg7-16	Fastfjell	Prøvetaker: Håvard Gautneb/...Lager: Løkken 200g Kommentar: Good quality graphite schits, NGU lab sample nr. 140107 Antall registrerte spesialanalyser = 2

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

Navn på prøvepunkt: hg8-16

(Objekt Id: 33866 306,00,02)

Lokalisering

Fylke:

Nordland

Kommune:

Bø (1867)

Kart 1:50000:

Stokmarknes (1132-2)

Kart 1:250000:

Svolvær

Koordinatsystem:

EU89-UTM Zone 33

Øst:

488617 m.

Nord:

7622873 m.

Lengdegrad:

14.7190120

Breddegrad:

68.7173600

Kartvisning

Ressurs

Ressurstype:

Grafitt

Ressursundertype:

Grafitt

Feltprøver

	Prøvenr.	Prøvetype	Diverse
	hg8-16	Fastfjell	Prøvetaker: Håvard Gautneb/...Lager: Løkken 200g Kommentar: Disseminated graphite schits, NGU lab sample nr. 140108 Antall registrerte spesialanalyser = 2

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

Navn på prøvepunkt: BD Bø 1840

(Objekt Id: 38761 306,00,03)

Lokalisering

Fylke:

Nordland

Kommune:

Bø (1867)

Kart 1:50000:

Stokmarknes (1132-2)

Kart 1:250000:

Svolvær

Koordinatsystem:

EU89-UTM Zone 33

Øst:

488589 m.

Nord:

7621774 m.

Lengdegrad:

14.7184210

Breddegrad:

68.7075110

Kartvisning

Ressurs

Ressurstype:

Grafitt

Ressursundertype:

Grafitt

Opplysning(er) i fritekstformat

Fri tekst

Sample point for sample BD Bø 1840

Feltprøver

	Prøvenr.	Prøvetype	Diverse
	BD Bø 1840	Fastfjell	Prøvetaker: Børre Davidsen Kommentar: Pegmatite with graphite Antall registrerte spesialanalyser = 3

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

Navn på prøvepunkt: BD Bø 1855

(Objekt Id: 38762 306,00,04)

Lokalisering

Fylke:

Nordland

Kommune:

Bø (1867)

Kart 1:50000:

Stokmarknes (1132-2)

Kart 1:250000:

Svolvær

Koordinatsystem:

EU89-UTM Zone 33

Øst:

488570 m.

Nord:

7622014 m.

Lengdegrad:

14.7179490

Breddegrad:

68.7096540

Kartvisning

Ressurs

Ressurstype:

Grafitt

Ressursundertype:

Grafitt

Opplysning(er) i fritekstformat

Fri tekst

Sample point for sample BD Bø 1855

Feltprøver

	Prøvenr.	Prøvetype	Diverse
	BD Bø 1855	Fastfjell	Prøvetaker: Børre Davidsen Kommentar: Fine grained felsic gneiss with disseminated graphite Antall registrerte spesialanalyser = 3

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

Navn på prøvepunkt: BD Bø 1857

(Objekt Id: 38763 306,00,05)

Lokalisering

Fylke:

Nordland

Kommune:

Bø (1867)

Kart 1:50000:

Stokmarknes (1132-2)

Kart 1:250000:

Svolvær

Koordinatsystem:

EU89-UTM Zone 33

Øst:

488572 m.

Nord:

7621859 m.

Lengdegrad:

14.7179920

Breddegrad:

68.7082640

Kartvisning

Ressurs

Ressurstype:

Grafitt

Ressursundertype:

Grafitt

Opplysning(er) i fritekstformat

Fri tekst

Sample point for sample BD Bø 1857

Feltprøver

	Prøvenr.	Prøvetype	Diverse
	BD Bø 1857	Fastfjell	Prøvetaker: Børre Davidsen Kommentar: Medium grained intermediate gneiss, small amounts of graphite Antall registrerte spesialanalyser = 3

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

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Analyseresultater

fra

Forekomstområde 1867 - 306 Kvernfjordalen

Spesial analyser

Prøvenr.	Prøvetype	Hva som er målt	Resultat
BD Bø 1840	Fastfjell	Totalt organisk karbon	.36%
BD Bø 1840	Fastfjell	Karboninnhold	.37%
BD Bø 1840	Fastfjell	Svovelinnhold	.07%
BD Bø 1855	Fastfjell	Totalt organisk karbon	2.22%
BD Bø 1855	Fastfjell	Karboninnhold	2.33%
BD Bø 1855	Fastfjell	Svovelinnhold	.03%
BD Bø 1857	Fastfjell	Karboninnhold	.34%
BD Bø 1857	Fastfjell	Totalt organisk karbon	.32%
BD Bø 1857	Fastfjell	Svovelinnhold	1.24%
HG43-14	Fastfjell	Karboninnhold	.12%
HG44-14	Fastfjell	Karboninnhold	.47%
HG45-14	Fastfjell	Karboninnhold	13.7%
hg7-16	Fastfjell	Karboninnhold	11.7%
hg7-16	Fastfjell	Svovelinnhold	.09%
hg8-16	Fastfjell	Karboninnhold	4.28%
hg8-16	Fastfjell	Svovelinnhold	.03%

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Faktaarket ble generert 25.04.2024

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

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