Fact Sheet for Deposit Area 1836

					Norsk versjon
	THE INDUSTRIAL MINERAL DATABASE
	Deposit Area 1836 - 305
	(Last updated 17.mar.2015)

Name of Deposit Area : Nord-Værnes

(Object Id : 1836,305,00,00)

Location

County :

Nordland (18)

Municipality :

Rødøy (1836)

Map 1:50000:

Melfjorden (1928-3)

Map 1:250000:

Mo i Rana

Marking point:

Longitude:

13.2478780

Latitude:

66.6670900

EU89-UTM Zone 33

(Coordinates IS confirmed)

X-coord:

422568 m.

Y-coord:

7395356 m.

Commodity

Main Type:

Graphite

Sub Type:

Graphite

Production

Activity:	Mining	Reserves:
Prod. method:	Open pit and underground mining	Production:	0 thousand tons
Prod. status:	Disused, closed	Volume of dump:

Importance

Public: Little Importance (reg. 18.02.2015)

Economical: Minor interest , (Confirmed 19.feb.2001 by Havard Gautneb)

Products

Element/product Crude ore grade or quality

REFRAC 20 %

Operations

From - To Activity Comments

1940 - 1945 Regular production Company/Institution :Tysk okkupasjon

Mineralization

Era: Proterozoic Period:

Dating: Method:

Genesis: Sedimentary deposit Form: Layer

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

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

Strike/Dip: 274 / 78 Direction:

Plunge:

Stratigraphic classification of host rock

Era: Period:

Province:

Geotec.unit:

Tectonic complex:

Igneous complex:

Group: Formation:

Mineralogy

Relationship Mineral Amount

Not defined Graphite Major mineral (>10%)

Not defined Plagioclase Major mineral (>10%)

Not defined Quartz Major mineral (>10%)

Not defined Biotite Subordinate mineral (1-10%)

Structures

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

Host rock Foliation Strike/Dip :274 / 78 Post-mineralisation ;...Effect :Controls

Information(s) in free text format

Free text

The deposit is situated about 100 meter from the road, at Nord-Værnes. A 50 meter long trench is what is visible from the former mining period (about 1920). The graphite bearing rock is part of an unit of supracrustal rocks that occur as large lenses and layers a long the whole of the Nord-Værnes peninsula. Airborne geophysics show the extent of these supracustals. Graphite bearng rocks can be found and several localities also on the western end of the peninsula. The graphite ore is coarse crystalline and flaky, grades vary from 4 to about 16% of graphitic carbon.

Bibliography:

From NGU's Reference Archive:

Korneliussen, Are , 1976

Malmgeologisk undersøkelse med henblikk på økonomisk utnyttelse av kromittforekomstene på kartbladene Rødøy og Lurøy.

;NTH Bergavd.;AVHANDLING

Bakke, Stig; Korneliussen, Are , 1986

Jack-straw-textured olivines in some Norwegian metaperidotites.

;Norsk geologisk forening;TIDSSKRIFTARTIKKEL;Norsk geologisk tidsskrift; No.66 (4);271-276 pages

Abstract:

Jack-straw-textured olivines, which are elongate olivines of metamorphic origin, occur in complexly metamorphosed ultramafites within the Norwegian Caledonides. The ultramafic bodies are lenses enclosed within high-grade mica-shists or gneisses. In generally they consist of a dunitic core sur- rounded by massive olivine orthopyroxenite with a mantle of jack-straw-textured olivines in contact with the country rocks. The jack-straw olivines are elongate, radomly orientated platy crystals from 3 cm to 1 m long. They lie in a matrix of orthopyroxene, carbonate and minor tremolite. Field relations between various rock-types, including jack-straw textured olivine + carbonate + talc +/ bronzite veins, are well exposed at the Nordvernes ultramafic body, North Helgeland.

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

Helicopter-borne magnetic, electromagnetic and radiometric geophysical survey in Holandsfjorden area, Meløy, Nordland

;Norges geologiske undersøkelse;RAPPORT;NGU-rapport; No.2013.043;26 pages

Abstract:

NGU conducted an airborne geophysical survey in Holandsfjorden area in July 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 1006 line km, covering an area of 200 km2.

Rønning, Jan S.; Gautneb, Håvard; Dalsegg, Einar; Larsen, Bjørn E.; Rodionov, Alexei , 2015

Oppfølgende grafittundersøkelser i Meløy og Rødøy kommuner, Nordland

;Norges geologiske undersøkelse;FAGRAPPORT;NGU-rapport; No.2014.046;63 pages

Abstract:

Som et ledd i Regjeringens satsning mot mineraler i Nord-Norge (MINN), utførte NGU geofysiske målinger fra helikopter rundt Holandsfjorden i 2013. Helikoptermålingene viste interessante ElektroMagnetiske (EM) anomalier som etter NGUs oppfatning burde undersøkes nærmere. I et samarbeid med Nordland fylkeskommune, Meløy Næringsutvikling og Rødøy kommuner har NGU evaluert grafittpotensialet i området gjennom tolkning av geofysiske data målt fra helikopter og på bakken samt oppfølgende geologisk kartlegging, prøvetaking og analyse. Det er ikke indikert god grafitt i større mengder utenom de to kjente forekomstene ved Nord-Værnes og Rendalsvik.

Fieldsamples

Sample No. Sample type Miscellanrous

HG52-14 Bedrock

Sampler :Havard Gautneb

Comment :Sample of graphit schist, UTMX: 422452 UTMY: 7395362

No. of registrated special analyses = 1

HG53-14 Bedrock

Sampler :Havard Gautneb

Comment :Sample of graphit schist, UTMX: 419930 UTMY: 7395061

No. of registrated special analyses = 1

hg57-14 Bedrock

Sampler :Havard Gautneb

No. of registrated special analyses = 1

hg59-14 Bedrock

Sampler :Havard Gautneb

No. of registrated special analyses = 1

Hg60-14 Bedrock

Sampler :Havard Gautneb

No. of registrated special analyses = 1

Hg61-14 Bedrock

Sampler :Havard Gautneb

No. of registrated special analyses = 1

hg62-14 Bedrock

Sampler :Havard Gautneb

No. of registrated special analyses = 1

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

Name of Sample point : Sample point

(Object Id : 1836,305,00,01)

Location

County : Nordland (18) Municipality : Rødøy (1836)

Map 1:50000: Melfjorden (1928-3) Map 1:250000: Mo i Rana

Marking point: Longitude: 13.2474520 Latitude: 66.6669930

EU89-UTM Zone 33 (Coordinates IS confirmed)

X-coord: 422549 m. Y-coord: 7395345 m.

Commodity

Main Type: Graphite Sub Type: Graphite

Fieldsamples

Sample No. Sample type Miscellanrous

HG27-12 Bedrock

Sampler :Håvard Gautneb

Comment :Dissiminated graphite schist. Carbon content = 19.64%

No. of registrated special analyses = 1

HG28-12 Bedrock

Sampler :Håvard Gautneb

Comment :Dissiminated graphite schist. Carbon content = 16.98%

No. of registrated special analyses = 1

JW12-9 Bedrock

Sampler :Jan Egil Wanvik

Comment :Dissiminated graphite schist. Carbon content = 13.2%

No. of registrated special analyses = 1

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

Analyse Results

from

Deposit Area 1836 - 305 Nord-Værnes

Special analyses

Sample No. Sample Type What is measured Result

HG27-12 Bedrock Total carbon (TC) 19,6%

HG28-12 Bedrock Total carbon (TC) 17%

HG52-14 Bedrock Total carbon (TC) 16.5%

HG53-14 Bedrock Total carbon (TC) 4.67%

hg57-14 Bedrock Total carbon (TC) 3.48%

hg59-14 Bedrock Total carbon (TC) .54%

Hg60-14 Bedrock Total carbon (TC) 1.74%

Hg61-14 Bedrock Total carbon (TC) 2.26%

hg62-14 Bedrock Total carbon (TC) 4.9%

JW12-9 Bedrock Total carbon (TC) 13,2%

	From - To	Activity	Comments
	1940 - 1945	Regular production	Company/Institution :Tysk okkupasjon

Era:	Proterozoic	Period:
Dating:		Method:
Genesis:	Sedimentary deposit	Form:	Layer
Main texture:	Banded	Min. distribution:	Disseminated (<20 % ore minerals)

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

Relationship	Mineral	Amount
Not defined	Graphite	Major mineral (>10%)
Not defined	Plagioclase	Major mineral (>10%)
Not defined	Quartz	Major mineral (>10%)
Not defined	Biotite	Subordinate mineral (1-10%)

	Location:	Type:	Orientation(360 gr.):	Relation to min.:
	Host rock	Foliation	Strike/Dip :274 / 78	Post-mineralisation ;...Effect :Controls

	Abstract:
	NGU conducted an airborne geophysical survey in Holandsfjorden area in July 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 1006 line km, covering an area of 200 km2.

Sample No.	Sample Type	What is measured	Result
HG27-12	Bedrock	Total carbon (TC)	19,6%
HG28-12	Bedrock	Total carbon (TC)	17%
HG52-14	Bedrock	Total carbon (TC)	16.5%
HG53-14	Bedrock	Total carbon (TC)	4.67%
hg57-14	Bedrock	Total carbon (TC)	3.48%
hg59-14	Bedrock	Total carbon (TC)	.54%
Hg60-14	Bedrock	Total carbon (TC)	1.74%
Hg61-14	Bedrock	Total carbon (TC)	2.26%
hg62-14	Bedrock	Total carbon (TC)	4.9%
JW12-9	Bedrock	Total carbon (TC)	13,2%