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	THE INDUSTRIAL MINERAL DATABASE
	Occurence 1868 - 303 Svinøya
	(Object Id: 7632) (Last updated: 05.09.2022)

Mineralization

	Era:	Proterozoic	Period:
	Genesis:	Sedimentary deposit	Form:	Irregular
	Main texture:	Granoblastic	Min. distribution:	Disseminated (<20 % ore minerals)

Main grain size:

Medium grained (1-3 mm)

	Strike/Dip:	10 / 70	Direction:
			Plunge:

Stratigraphic classification of host rock

Era:

Proterozoic

Period:

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

Group:

Formation:

Mineralogy

	Mineral	Amount
	Graphite	Major mineral (>10%)

Structures

	Location:	Type:	Orientation(360 gr.):	Relation to min.:
	Host rock	Foliation	Strike/Dip :10 / 70	Post-mineralisation ;...Effect :Controls

Information(s) in free text format

Free text

The occurrence is located on the SE side of Svinøy island. Exposed is a 2.5 meter wide graphite schist with 26% TC. By all probaility it is the continuation of the graphite schist on Skogsøya to the North. This localioty is probably one of the best places in the world to study a graphite schist its internal deformation and contacts to the country rocks.

Photo(s) from the Deposit area:

Photo no. 1 showing picture of graphite schist"

Bibliography:

From NGU's Reference Archive:

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. pages

Abstract:

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.

Fieldsamples

	Sample No.	Sample type	Miscellanrous
	HG38-14	Bedrock	Sampler: Havard Gautneb Comment: Sample of graphit schist, UTMX: 498345 UTMY: 7639890 No. of registrated special analyses = 1
	HG39-14	Bedrock	Sampler: Havard Gautneb Comment: Sample of graphit schist, UTMX: 498345 UTMY: 7639890 No. of registrated special analyses = 1

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

Name of Sample point: 140225

(Object Id: 38791 303,00,01)

Location

County:

Nordland

Municipality:

Øksnes (1868)

Map 1:50000:

Nykvåg (1132-1)

Map 1:250000:

Svolvær

Coordinate system:

EU89-UTM Zone 33

East:

498342 m.

North:

7639889 m.

Longitude:

14.9587870

Latitude:

68.8702040

Show on map

Resource

Resource Type:

Graphite

Resource Subtype:

Graphite

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Analyse Results

from

Deposit Area 1868 - 303 Svinøya

Special analyses

Sample No.	Sample Type	What is measured	Result
HG38-14	Bedrock	Total carbon (TC)	24.9%
HG39-14	Bedrock	Total carbon (TC)	21.8%

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The fact sheet was created on 19.04.2024

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