Fact Sheet for <b>Occurence 1866

					Norsk versjon
	THE INDUSTRIAL MINERAL DATABASE
	Occurence 1866 - 302 Sommarhus
	(Object Id: 7596) (Last updated: 31.08.2022)

Location

County:

Nordland

Municipality:

Hadsel (1866)

Map 1:50000:

Oddvær (1131-1)

Map 1:250000:

Svolvær

Coordinate system:

EU89-UTM Zone 33

East:

486961 m.

North:

7588922 m.

Longitude:

14.6824550

Latitude:

68.4127950

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Resource

Resource Type:

Graphite

Resource Subtype:

Graphite

Importance

Raw material meaning:

Not Assessed (reg. 07.12.2015)

Resources and production

	Activity:	Exploration	Reserves:
	Operating method:		Historical production:

Operations

From - To Activity Comments

1993 Sampling Company/Institution :NGU

Mineralization

Era: Proterozoic Period:

Genesis: Sedimentary deposit Form: Lens

Main texture: Schistose Min. distribution: Disseminated (<20 % ore minerals)

Main grain size: Medium grained (1-3 mm)

Strike/Dip: 60 / 70 Direction:

Plunge:

Stratigraphic classification of host rock

Era: Period:

Province:

Geotec.unit:

Tectonic complex:

Igneous complex:

Group: Formation:

Mineralogy

Mineral Amount

Graphite Major mineral (>10%)

Plagioclase Major mineral (>10%)

Quartz Major mineral (>10%)

Opaque Accessory mineral (<1%)

Structures

Location: Type: Orientation(360 gr.): Relation to min.:

Host rock Schistosity Strike/Dip :60 / 70 Post-mineralisation ;...Effect :Controls

Information(s) in free text format

Free text

Forekomsten antas å være en direkte forsettelse av av grafittmalmen ved Morfjord gruve i nordlig retning. På de tre fjell knusene ute på sletta ved Somarhus har det vært foretatt sprenginger etter grafitt. Grafitt malmen må ha en bredde på minst 20 meter. Malmen gir intrykk av å være svært inhomogen med store vekslinger mellom svært grafittrike og fattige kvarts feltspat bergart over korte avstander. i 2017 ble det gjort kartlegging av ved hjelp av EM 31 av den serbiske geologen Janja Knezevic. Forekomsten ble også prøvetatt, Tilgjengelige data viser en gjennomsnittlig grafitt gehalt TC på ca. 24% med en variasjon fra 11 til 33 % TC. Forekomsten ligger tett opptil Morfjorden naturreservat. Rønning et al (2019) har estimert en tonnasje på 780000 tonn med 24.1% TC

Bibliography:

From NGU's Reference Archive:

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 pages

Abstract:

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. 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

93-9a Bedrock

Sampler: Gautneb, H./...Stored: Løkken

Comment: Grafittskifer fra malmensutgående

No. of registrated special analyses = 1

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

Name of Sample point: hg14-17

(Object Id: 36366 302,00,01)

Location

County: Nordland Municipality: Hadsel (1866)

Map 1:50000: Oddvær (1131-1) Map 1:250000: Svolvær

Coordinate system: EU89-UTM Zone 33

East: 486961 m. North: 7588922 m.

Longitude: 14.6824550 Latitude: 68.4127950

Show on map

Resource

Resource Type: Graphite Resource Subtype: Graphite

Fieldsamples

Sample No. Sample type Miscellanrous

hg14-17 Hand specimen

Sampler: H†vard Gautneb

Comment: Graphite schist

No. of registrated special analyses = 2

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

Name of Sample point: Hg15-17

(Object Id: 36367 302,00,02)

Location

County: Nordland Municipality: Hadsel (1866)

Map 1:50000: Oddvær (1131-1) Map 1:250000: Svolvær

Coordinate system: EU89-UTM Zone 33

East: 486968 m. North: 7588918 m.

Longitude: 14.6826260 Latitude: 68.4127680

Show on map

Resource

Resource Type: Graphite Resource Subtype: Graphite

Fieldsamples

Sample No. Sample type Miscellanrous

Hg15-17 Hand specimen

Sampler: H†vard Gautneb

Comment: Graphite schist

No. of registrated special analyses = 2

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

Name of Sample point: Hg16-17

(Object Id: 36368 302,00,03)

Location

County: Nordland Municipality: Hadsel (1866)

Map 1:50000: Oddvær (1131-1) Map 1:250000: Svolvær

Coordinate system: EU89-UTM Zone 33

East: 487019 m. North: 7588990 m.

Longitude: 14.6838350 Latitude: 68.4134160

Show on map

Resource

Resource Type: Graphite Resource Subtype: Graphite

Fieldsamples

Sample No. Sample type Miscellanrous

Hg16-17 Hand specimen

Sampler: H†vard Gautneb

Comment: Graphite schist

No. of registrated special analyses = 2

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

Name of Sample point: hg17-17

(Object Id: 36369 302,00,04)

Location

County: Nordland Municipality: Hadsel (1866)

Map 1:50000: Oddvær (1131-1) Map 1:250000: Svolvær

Coordinate system: EU89-UTM Zone 33

East: 486984 m. North: 7588930 m.

Longitude: 14.6830140 Latitude: 68.4128680

Show on map

Resource

Resource Type: Graphite Resource Subtype: Graphite

Fieldsamples

Sample No. Sample type Miscellanrous

hg17-17 Hand specimen

Sampler: H†vard Gautneb

Comment: Graphite schist

No. of registrated special analyses = 2

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

Name of Sample point: Hg18-17

(Object Id: 36370 302,00,05)

Location

County: Nordland Municipality: Hadsel (1866)

Map 1:50000: Oddvær (1131-1) Map 1:250000: Svolvær

Coordinate system: EU89-UTM Zone 33

East: 486980 m. North: 7588914 m.

Longitude: 14.6829190 Latitude: 68.4127240

Show on map

Resource

Resource Type: Graphite Resource Subtype: Graphite

Fieldsamples

Sample No. Sample type Miscellanrous

Hg18-17 Hand specimen

Sampler: H†vard Gautneb

Comment: Graphite schist

No. of registrated special analyses = 2

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

Name of Sample point: hg19-17

(Object Id: 36371 302,00,06)

Location

County: Nordland Municipality: Hadsel (1866)

Map 1:50000: Oddvær (1131-1) Map 1:250000: Svolvær

Coordinate system: EU89-UTM Zone 33

East: 487016 m. North: 7588983 m.

Longitude: 14.6837870 Latitude: 68.4133530

Show on map

Resource

Resource Type: Graphite Resource Subtype: Graphite

Fieldsamples

Sample No. Sample type Miscellanrous

hg19-17 Hand specimen

Sampler: H†vard Gautneb

Comment: Graphite schist

No. of registrated special analyses = 2

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

Name of Sample point: jk2617-1

(Object Id: 36372 302,00,07)

Location

County: Nordland Municipality: Hadsel (1866)

Map 1:50000: Oddvær (1131-1) Map 1:250000: Svolvær

Coordinate system: EU89-UTM Zone 33

East: 487019 m. North: 7588990 m.

Longitude: 14.6838350 Latitude: 68.4134160

Show on map

Resource

Resource Type: Graphite Resource Subtype: Graphite

Fieldsamples

Sample No. Sample type Miscellanrous

jk2617-1 Hand specimen

Sampler: Janja Knezevic

Comment: sjerp (jk1617-1gps)

No. of registrated special analyses = 2

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

Analyse Results

from

Deposit Area 1866 - 302 Sommarhus

Special analyses

Sample No. Sample Type What is measured Result

hg14-17 Hand specimen Total carbon (TC) 33.3%

hg14-17 Hand specimen Content of sulfur .336%

Hg15-17 Hand specimen Total carbon (TC) 37.7%

Hg15-17 Hand specimen Content of sulfur .475%

Hg16-17 Hand specimen Content of sulfur .0342%

Hg16-17 Hand specimen Total carbon (TC) 26.6%

hg17-17 Hand specimen Total carbon (TC) 22%

hg17-17 Hand specimen Content of sulfur .0827%

Hg18-17 Hand specimen Total carbon (TC) 11.3%

Hg18-17 Hand specimen Content of sulfur .01%

hg19-17 Hand specimen Total carbon (TC) 12.9%

hg19-17 Hand specimen Content of sulfur .0335%

jk2617-1 Hand specimen Total carbon (TC) 24.7%

jk2617-1 Hand specimen Content of sulfur .0291%

93-9a Bedrock Total carbon (TC) 35.93%

	From - To	Activity	Comments
	1993	Sampling	Company/Institution :NGU

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

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

	Mineral	Amount
	Graphite	Major mineral (>10%)
	Plagioclase	Major mineral (>10%)
	Quartz	Major mineral (>10%)
	Opaque	Accessory mineral (<1%)

	Location:	Type:	Orientation(360 gr.):	Relation to min.:
	Host rock	Schistosity	Strike/Dip :60 / 70	Post-mineralisation ;...Effect :Controls

Sample No.	Sample Type	What is measured	Result
hg14-17	Hand specimen	Total carbon (TC)	33.3%
hg14-17	Hand specimen	Content of sulfur	.336%
Hg15-17	Hand specimen	Total carbon (TC)	37.7%
Hg15-17	Hand specimen	Content of sulfur	.475%
Hg16-17	Hand specimen	Content of sulfur	.0342%
Hg16-17	Hand specimen	Total carbon (TC)	26.6%
hg17-17	Hand specimen	Total carbon (TC)	22%
hg17-17	Hand specimen	Content of sulfur	.0827%
Hg18-17	Hand specimen	Total carbon (TC)	11.3%
Hg18-17	Hand specimen	Content of sulfur	.01%
hg19-17	Hand specimen	Total carbon (TC)	12.9%
hg19-17	Hand specimen	Content of sulfur	.0335%
jk2617-1	Hand specimen	Total carbon (TC)	24.7%
jk2617-1	Hand specimen	Content of sulfur	.0291%
93-9a	Bedrock	Total carbon (TC)	35.93%