Norsk versjon
	THE INDUSTRIAL MINERAL DATABASE
	Occurence 1833 - 310 Midtstraumen
	(Object Id: 7437) (Last updated: 14.08.2012)

Operations

	From - To	Activity	Comments
	1938	Detail mapping	Company/Institution :NGU v/ Bøckmann
	1952	Sampling	Company/Institution :NGU v/ Neumann
	1993	Sampling	Company/Institution :NGU v/ Gautneb

Mineralization

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

Main grain size:

Medium grained (1-3 mm)

	Strike/Dip:	124 / 45	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%)
	Hornblende	Subordinate mineral (1-10%)
	Biotite	Subordinate mineral (1-10%)

Structures

	Location:	Type:	Orientation(360 gr.):	Relation to min.:
	Host rock	Foliation	Strike/Dip :124 / 45	Post-mineralisation ;...Effect :Controls

Information(s) in free text format

Free text

Forekomsten ligger ca. 1.5 km nord for riksveien. Den ligger i Rausteinbekkens dal og følger bekken. Bekken har gravd ut en 10 m dyp canyon som skjærer gjennom en delvis grafittissert svartskifer. Skiferen følger bekkeleie i et ganske bratt gjel. Svartskifer enheten har ganske stor utbredelse og kan følges østover der den krystter fylkesriksveien og bøyer om i en stor fold. I foldelukkningen har bergarten 20-30 meters mektighet. Svart skiferen er dårlig krystallinsk og må vel karakteriseres som amorf grafitt. Karboninholdet kommer om mot 10-11% i enkelte prøver.

Name of Sample point: Sample point 1

(Object Id: 23144 310,00,01)

Location

County:

Nordland

Municipality:

Rana (1833)

Map 1:50000:

Mo i Rana (1927-1)

Map 1:250000:

Mo i Rana

Coordinate system:

EU89-UTM Zone 33

East:

444982 m.

North:

7354020 m.

Longitude:

13.7732440

Latitude:

66.3011850

Show on map

Resource

Resource Type:

Graphite

Resource Subtype:

Graphite

Information(s) in free text format

Free text

This is a sample locality, see the sample description and the analyses for details

Fieldsamples

	Sample No.	Sample type	Miscellanrous
	HG29a-12	Bedrock	Sampler: Håvard Gautneb Comment: Black schist partly altered to graphite. Carbon content = 3.348% No. of registrated special analyses = 1
	HG29b-12	Bedrock	Sampler: Håvard Gautneb Comment: Black schist partly altered to graphite. Carbon content = 3.708% No. of registrated special analyses = 1
	HG29c-12	Bedrock	Sampler: Håvard Gautneb Comment: Black schist partly altered to graphite. Carbon content = 10.85% No. of registrated special analyses = 1
	HG30-12	Bedrock	Sampler: Håvard Gautneb Comment: Black schist partly altered to graphite. Carbon content = 3.211% No. of registrated special analyses = 1

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

Name of Sample point: Sample point 2

(Object Id: 23145 310,00,02)

Location

County:

Nordland

Municipality:

Rana (1833)

Map 1:50000:

Mo i Rana (1927-1)

Map 1:250000:

Mo i Rana

Coordinate system:

EU89-UTM Zone 33

East:

444627 m.

North:

7354297 m.

Longitude:

13.7652090

Latitude:

66.3035980

Show on map

Resource

Resource Type:

Graphite

Resource Subtype:

Graphite

Information(s) in free text format

Free text

This is a sample locality, see the sample description and the analyses for details

Fieldsamples

	Sample No.	Sample type	Miscellanrous
	HG31-12	Bedrock	Sampler: Håvard Gautneb Comment: Black schist partly altered to graphite. Carbon content = 2.981% No. of registrated special analyses = 1

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

Name of Sample point: Sample point 3

(Object Id: 23146 310,00,03)

Location

County:

Nordland

Municipality:

Rana (1833)

Map 1:50000:

Mo i Rana (1927-1)

Map 1:250000:

Mo i Rana

Coordinate system:

EU89-UTM Zone 33

East:

444982 m.

North:

7354011 m.

Longitude:

13.7732700

Latitude:

66.3010960

Show on map

Resource

Resource Type:

Graphite

Resource Subtype:

Graphite

Information(s) in free text format

Free text

This is a sample locality, see the sample description and the analyses for details

Fieldsamples

	Sample No.	Sample type	Miscellanrous
	JW12-10	Bedrock	Sampler: Jan Egil Wanvik Comment: Black schist partly altered to graphite. Carbon content = 9.703% No. of registrated special analyses = 1

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

Name of Sample point: Sample point 4

(Object Id: 23147 310,00,04)

Location

County:

Nordland

Municipality:

Rana (1833)

Map 1:50000:

Mo i Rana (1927-1)

Map 1:250000:

Mo i Rana

Coordinate system:

EU89-UTM Zone 33

East:

444717 m.

North:

7354190 m.

Longitude:

13.7672840

Latitude:

66.3026630

Show on map

Resource

Resource Type:

Graphite

Resource Subtype:

Graphite

Information(s) in free text format

Free text

This is a sample locality, see the sample description and the analyses for details

Fieldsamples

	Sample No.	Sample type	Miscellanrous
	JW12-11	Bedrock	Sampler: Jan Egil Wanvik Comment: Black schist partly altered to graphite. Carbon content = 8.913% No. of registrated special analyses = 1

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

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Analyse Results

from

Deposit Area 1833 - 310 Midtstraumen

Special analyses

Sample No.	Sample Type	What is measured	Result
HG29a-12	Bedrock	Total carbon (TC)	3,3%
HG29b-12	Bedrock	Total carbon (TC)	3,7%
HG29c-12	Bedrock	Total carbon (TC)	10,9%
HG30-12	Bedrock	Total carbon (TC)	3,2%
HG31-12	Bedrock	Total carbon (TC)	3%
JW12-10	Bedrock	Total carbon (TC)	9,7%
JW12-11	Bedrock	Total carbon (TC)	8,9%

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The fact sheet was created on 02.05.2024

Questions or comments regarding the fact sheet can be emailed to: ressursdatabaser@ngu.no

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