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Biotite from selected localities.

Norway
 
  • Telemark
    • Porsgrunn
      • Bjørkøya
Knut Edvard Larsen collection # 2502
      • Håøya
Svein A. Berge collection/observation 1993.
  • Vestfold
    • Larvik
      • Arøyskjærene (Arøy skerries)
Larsen, A. O & Raade, G.(1997): Pyroksener fra Oslofeltets syenittpegmatitter. Bergverksmuseets Skrift 12,16-17
Bollingberg, H.J. & Ure, A.M., Sørensen, I. & Leonardsen, E.S. (1983): Geochemistry of Some Eudialyte-Eucolite Specimens and a Co-existing Catapleiite from Langesund, Norway. Tschermaks Mineralogische und Petrographische Mitteilungen.32: 153-169
      • Barkevik area
        • Barkevika
Knut Edvard Larsen collection # 581
Knut Edvard Larsen observation in field and collection 20.04.2013
Andrew Hodgson photo & specimen , photo-1157185
Brøgger, W.C. (1890): Die Mineralien der Syenitpegmatitgänge der südnorwegischen Augit-und Nephelinsyenite. Zeitschrift für Kristallographie und Mineralogie 16. p. 65-67
Knut Edvard Larsen collection # MM-4602
      • Stokkøya
Brøgger, W.C. (1890): Die Mineralien der Syenitpegmatitgänge der südnorwegischen Augit-und Nephelinsyenite. Zeitschrift für Kristallographie und Mineralogie 16. 663 pp + 28 plates
Larsen, A. O. (ed.) (2010): The Langesundsfjord. History, geology, pegmatites, minerals. Bode Verlag Gmbh, Salzhemmendorf, Germany, 240 p.
Larsen, A. O. (1988): Helvite group minerals form syenite pegmatites in the Oslo Region, Norway. Contribution to the mineralogy of Norway no 68. Norsk Geologisk Tidsskrift 68: 119-124
Andersen, T., Erambert, M., Larsen, A. O. and Selbekk, R. S. (2010): Petrology of nepheline syenite pegmatites in the Oslo Rift, Norway: Zirconium silicate mineral assemblages as indicators of alkalinity and volatile fugacity in mildly agpaitic magma. J. Petrology 51, 2303-2325.
Knut Edvard Larsen collection
      • Tvedalen
Larsen, A. O & Raade, G.(1997): Pyroksener fra Oslofeltets syenittpegmatitter. Bergverksmuseets Skrift 12,16-17
Raade, G.; Åmli, R.; Mladeck, M.H.; Din, V.K.; Larsen, A.O. & Åsheim, A.(1983): Chiavennite from syenite pegmatites in the Oslo Region, Norway. American Mineralogist 68; 628-633
Larsen, A.O.(2015): A new find of sphaerobertrandite from the Larvik Plutonic Complex, Norway, Aust-Agder. Norsk Mineralsymposium 2015, 45-46
Knut Edvard Larsen collection # 1206
Andersen, F., Berge, S.A. & Burvald, I. (1996): Die Mineralien des Langesundsfjords und des umgebenden Larvikit-Gebietes, Oslo-Region, Norwegen. Mineralien-Welt 7 (4), 21-100
Andersen, F.,Berge, S.A. & Burvald, I. (1996): Die Mineralien des Langesundsfjords und des umgebenden Larvikit-Gebietes, Oslo-Region, Norwegen. MineralienWelt 7(4):21-100
Sunde, Ø., Friis, H. & Andersen, T. (2019) Pegmatites of the Larvik Plutonic Complex, Oslo Rift, Norway: field relations and characterisation. Norwegian Journal of Geology, 99: 93-111
Svein A. Berge collection/observation 2006.
Svein A. Berge collection/observation 1993.
Knut Edvard Larsen Collection
Larsen, A. O.; Åsheim, A.; Raade, G. & Taftø, J. (1992): Tvedalite, (Ca,Mn)4Be3Si6O17(OH)4•3H2O, a new mineral from syenite pegmatite in the Oslo Region, Norway, American Mineralogist 77, 438-443
      • Vesle Arøya
Engvoldsen, T., Andersen, F., Berge, S. A. & Burvald, I. (1991): Pegmatittmineraler fra Larvik ringkompleks. STEIN 18 (1), 15-71; Larsen, A.O., Kolitsch, U., Gault, R.A. & Giester, G. (2010): Eirikite a new mineral species of the leifite group from the Langesundsfjord district, Norway. European Journal of Mineralogy. 22, 875–880
Brøgger, W.C. (1890): Die Mineralien der Syenitpegmatitgänge der südnorwegischen Augit-und Nephelinsyenite. Zeitschrift für Kristallographie und Mineralogie 16. p 462
 
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