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THE INDUSTRIAL MINERAL DATABASE
Occurence 1824 - 327 Bjørnålia
(Object Id: 15049)
(Last updated: 20.01.2022)

Location
County: Nordland Municipality: Vefsn (1824)
Map 1:50000: Fustvatnet (1926-4) Map 1:250000: Mosjøen
Coordinate system: EU89-UTM Zone 33 (Coordinates NOT confirmed)
East: 422300 m. North: 7293100 m.
Longitude: 13.3044520 Latitude: 65.7500620
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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:
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Stratigraphic classification of host rock
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Information(s) in free text format
Free text
Det gamle klebersteinsbruddet er 100 m langt, 50 bredt og 30 m dypt, og leverte kleberstein til Nidarosdomen i perioden 1897-1969. Klebersteinen opptrer langs den vestlige delen av en serpentinitt som fortsetter 300-400 m mot sør. Sammen med den ultramafiske linsen er den ca 600 m lang. En 5 m talkførende klorittskifer forekommer langs den vestligste grensen. I den sørlige delen assosierers gabbroen med en serpentisnitt. En forsenkning i den den sørlige delen, ca 20-30 m vid, kan antyde at det kan finnes en ikke-blottet talk-førende sone. Klorittitt finnes i den vestligste delen av denne forsenkningen. Klebersteinen er mørk og finkornet og mikroskopstudier indikerer at den består av kloritt og amfibol og at talk bare forekommer i små mengder. (Karlsen, Gautneb og Lund, 1999)

Bibliography:
From NGU's Reference Archive:
Gjelle, Svein; Mickelson, Marit; Theisen, Fredrik J. , 1996
Fustvatnet. Berggrunnskart; Fustvatnet; 19264; 1:50 000; trykt i farger
;Norges geologiske undersøkelse;KART
Abstract:
Beskrivelsen finnes på kartet.

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.


The fact sheet was created on 28.03.2024

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