Fact Sheet for Deposit Area 2012

					Norsk versjon
	THE INDUSTRIAL MINERAL DATABASE
	Deposit Area 2012 - 340
	(Last updated 03.feb.2004)

Name of Deposit Area : Store Kjerringfjord

(Object Id : 2012,340,00,00)

Location

County :

Finnmark (20)

Municipality :

Alta (2012)

Map 1:50000:

Stjernøya (1835-4)

Map 1:250000:

Hammerfest

Marking point:

Longitude:

22.6808680

Latitude:

70.3278000

EU89-UTM Zone 34

(Coordinates IS confirmed)

X-coord:

563145 m.

Y-coord:

7803301 m.

Commodity

Main Type:

Olivine

Sub Type:

Olivine

Importance

Public: Not Assessed (reg. 18.02.2015)

Economical: Not classified/evaluated

Mineralization

Era: Period:

Dating: Method:

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

På vestsiden av indre del av Store Kjerringfjord. Over 90% olivin. Ligger for bratt og utsatt til.

Bibliography:

From NGU's Reference Archive:

Oosterom, M.G. , 1963

The ultramafites and layered gabbro sequences in the granulite facies rocks on Stjernøy.

;AVHANDLING;296 s. pages

Abstract:

På Stjernøy, Seiland og på fastlandet ved Øksfjord og Bergsfjord finne peridotitt, pyroksenitt og lagdelt gabbro innenfor et kompleks av høymetamorfte gabbro gneisser. Den lagdelte gabbro er i alminnelighet konkordant med parallellstrukturen i de omliggende gneiser, men viser lokalt uregelmessigheter (se kart i lommen bak i boken). Også hornblenditt, karbonatitt og nefelinsyenitt forekommer, de er sannsynligvis dannet ved metasomatiske prosesser. (Forkortet)

Bennett, M.C.; Emblin, S.R.; Robins, B.; Yeo, W.J.A. , 1986

High-temperature ultramafic complexes in the North Norwegian Caledonides: I - Regional setting and field relationships.

;Norges geologiske undersøkelse;TIDSSKRIFTARTIKKEL;NGU Bulletin; No.405;1-40 pages

Abstract:

Forkortet. Four major (25-100 km²) ultramafic complexes were developed in the Sørøy Nappe during the second phase of Finnmarkian deformation in the North Norwegian Caledonides. They were emplaced into layered mafic intrusions and show broadly similar emplacement histories and petrographic variations suggesting a related petrogenesis. The Nordre Bumannsfjord, Melkvann and Kvafjord group of ultramafic complexes developed in part by emplacement of both replacive and dilational ne-normative ultramafic sheets and dykes which progressively fragmented the layered olivine gabbro envelope. The Reinfjord ultramafic complex contains pronounced, subhorizontal modal layering and evidence of at least 3 major magmatic events. The intrusive sequences and petrographic variations represented in the complexes suggest the succesive emplacement of mantle-derived magmas with a diminishing number of liquidus phases, accompanied by in situ liquid-crystal fractionation, subsidiary hybridization and metasomatism.

References not to be found in NGU's Reference Archive.:

Geis, H.P. 1968b: Olivinforekomst ved Davaluft på Stjernøy. Christiania Spigerverk(Elkem)-notat, 2 s.

	Era:		Period:
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	Genesis:		Form:
	Main texture:		Min. distribution:

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	Tectonic complex:
	Igneous complex: