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Oftedahl, Christoffer (1963) Contributions to the mineralogy of Norway. No. 19. Red corundum of Froland at Arendal. Norsk Geologisk Tidsskrift [Norwegian Journal of Geology], 43 (4) 431-440

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Reference TypeJournal (article/letter/editorial)
Access RightsOpen Access
TitleContributions to the mineralogy of Norway. No. 19. Red corundum of Froland at Arendal
JournalNorsk Geologisk Tidsskrift
[Norwegian Journal of Geology]
ISBN 0029-196x
AuthorsOftedahl, ChristofferAuthor
Year1963Volume43
Page(s)431-440Issue4
URL
Download URLhttps://njg.geologi.no/images/NJG_articles/NGT_43_4_431-440.pdf+
Classification
Not set
LoC
Not set
Mindat Ref. ID16647888Long-form Identifiermindat:1:5:16647888:4
GUID91e1b9ca-1c7b-4d97-84d1-95728c3cdfec
Full ReferenceOftedahl, Christoffer (1963) Contributions to the mineralogy of Norway. No. 19. Red corundum of Froland at Arendal. Norsk Geologisk Tidsskrift [Norwegian Journal of Geology], 43 (4) 431-440
Plain TextOftedahl, Christoffer (1963) Contributions to the mineralogy of Norway. No. 19. Red corundum of Froland at Arendal. Norsk Geologisk Tidsskrift [Norwegian Journal of Geology], 43 (4) 431-440
In(1963) Norsk Geologisk Tidsskrift [Norwegian Journal of Geology] Vol. 43 (4) Norsk Geologisk Forening
Abstract/NotesRed corundum crystals occur in a two meter wide zone in the gneisses 11 km northwest of Arendal, Southern Norway. The ordinary features of the crystals are described, and Universal stage work indicates that the "lamellar twinning" is due to alteration on cleavages. It is suggested as an alternative hypothesis to "lamellar twinning and parting parallel to the rhombohedron" that corundum possesses true cleavage and pseudo-twinning due to alteration.

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Locality Pages

LocalityCitation Details
Kleggåsen Ruby Quarry, Froland, Agder, Norway

Mineral Occurrences

LocalityMineral(s)
Kleggåsen Ruby Quarry, Froland, Agder, Norway Albite, Beryl, Biotite, Corundum, Fuchsite, Kyanite, Oligoclase, Ruby, Rutile, Sillimanite, Tourmaline


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