Fact Sheet for <b>Occurence 5601 - 310 Forsbukta (Hakstabben)</b>

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	THE INDUSTRIAL MINERAL DATABASE
	Occurence 5601 - 310 Forsbukta (Hakstabben)
	(Object Id: 7051) (Last updated: 02.02.2004)

Location

County:

Finnmark

Municipality:

Alta (5601)

Map 1:50000:

Seiland (1835-1)

Map 1:250000:

Hammerfest

Coordinate system:

EU89-UTM Zone 34

(Coordinates NOT confirmed)

East:

579444 m.

North:

7799401 m.

Longitude:

23.1108250

Latitude:

70.2882960

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Resource

Resource Type:

Olivine

Resource Subtype:

Olivine

Importance

Raw material meaning:

Not Assessed (reg. 18.02.2015)

Mineralization

Genesis: Form:

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Main grain size:

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Plunge:

Stratigraphic classification of host rock

Era: Period:

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Igneous complex:

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Information(s) in free text format

Free text

Dette er en gammel registrering ved A.O.Poulsen som også er benevnt Hakstabben (olivin). Området består av lagdelt olivin-gabbro i følge Bennett (1986), og har ingen økonomisk interesse som olivinressurs.

Bibliography:

From NGU's Reference Archive:

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.

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