Fact Sheet for <b>Occurence 1836

					Norsk versjon
	THE INDUSTRIAL MINERAL DATABASE
	Occurence 1836 - 330 Sjåvika
	(Object Id: 15032) (Last updated: 20.01.2022)

Location

County:

Nordland

Municipality:

Rødøy (1836)

Map 1:50000:

Melfjorden (1928-3)

Map 1:250000:

Mo i Rana

Coordinate system:

EU89-UTM Zone 33

(Coordinates NOT confirmed)

East:

424299 m.

North:

7389700 m.

Longitude:

13.2905490

Latitude:

66.6168030

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Resource

Resource Type:

Olivine

Resource Subtype:

Ultramafic (unspec.)

Importance

Raw material meaning:

Not Assessed (reg. 18.02.2015)

Mineralization

Genesis: Form:

Main texture: Min. distribution:

Main grain size:

Strike/Dip: Direction:

Plunge:

Stratigraphic classification of host rock

Era: Period:

Province:

Geotec.unit:

Tectonic complex:

Igneous complex:

Group: Formation:

Information(s) in free text format

Free text

Dette er en liten kuppe med ultramafisk bergart som er sterkt omvandlet og viser, store kystaller av enstatitt og olivin i jack straw tekstur.

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

Karlsen, Tor Arne ; Gautneb, Håvard ; Lund, Bjørn , 1999

Status-report on talc-prospecting in Helgeland, northern Norway.

;Norges geologiske undersøkelse;FAGRAPPORT;NGU-rapport; No.99.068;? pages

Abstract:

A prospecting programme for talc has been carried out in Helgeland. The results are both good and bad; a new talc deposit has been found in Kvanndalen, a few km west of Altermark. The deposit are exposed, and the size is not yet known, except that the maximum width is around 50 metres. To be able to use th ore, there must either be a market for the assemblage talc-breunnerit-olivine, or it must be possible to remove the olivine. A further deposit of interest occurs in Misvær. Otherwise, talc is rather uncommon in the numerous ultramafic lenses around the Høgtuva-, Sjona- and Svartisen windows. The ultramafic lenses are dominated by the metamorphic assemblage enstatite-anthophyllite-carbonate with or without olivine. It is concluded that the metamorphic grade has, in general, been too high in the western area and that possible pre-existing talc-carbonate assemblages have been altered to the minerals above. The deposit in Kvanndalen probably represent the margin of what can be termed the Altermark Talc Province. Only olivine has been included in the talc-carbonate assemblage, while bodies further to the west carry olivine, enstatite and anthophyllite.

Fieldsamples

Sample No. Sample type Miscellanrous

NGUHG96047 Bedrock

Comment: This is a dummy sample that does not excists. The assosciated analyses have been compiled from various published and unpublished reports

No. of registrated oxide analyses = 1

NGUHG96048 Bedrock

Comment: This is a dummy sample that does not excists. The assosciated analyses have been compiled from various published and unpublished reports

No. of registrated oxide analyses = 1

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

Analyse Results

from

Deposit Area 1836 - 330 Sjåvika

Oxide analyses
( All values are in % )

Sample No. Sample Type SiO2 Al2O3 TiO2 Fe2O3 MnO MgO CaO

NGUHG96047 Bedrock 40.70 0.35 0.00 7.60 0.11 41.00 0.14

NGUHG96048 Bedrock 31.80 1.37 0.00 9.10 0.13 40.00 0.16

------------------

Sample No. Na2O K2O P2O5 Loss Sum

NGUHG96047 0.03 0.00 0.00 9.62 100.00

NGUHG96048 0.03 0.00 0.00 10.19 93.00

	Genesis:		Form:
	Main texture:		Min. distribution:

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

Sample No.	Sample Type	SiO2	Al2O3	TiO2	Fe2O3	MnO	MgO	CaO
NGUHG96047	Bedrock	40.70	0.35	0.00	7.60	0.11	41.00	0.14
NGUHG96048	Bedrock	31.80	1.37	0.00	9.10	0.13	40.00	0.16

Sample No.	Na2O	K2O	P2O5	Loss	Sum
NGUHG96047	0.03	0.00	0.00	9.62	100.00
NGUHG96048	0.03	0.00	0.00	10.19	93.00