Minerals are found in nepheline-syenite-pegmatites, and this entry covers several small pegmatites among them the typelocality of eudidymite.
Note: Lille Arøy island has also been called 'Midtre Arøy' and 'Øvre Arøy'. Brøgger (1890) usually used 'Ober-Arö', but he also used 'Mittel-Arö'.
See also Vesle Arøya locality.
References
- Brøgger, W.C. (1890): Die Mineralien der Syenitpegmatitgänge der südnorwegischen Augit-und Nephelinsyenite. Zeitschrift für Kristallographie und Mineralogie 16. 663 pp + 28 plates
- Flink, G. (1899): Über einige seltene Mineralien aus der Gegend von Langesund in Norwegen. Bulletin of the Geological Institution of the University of Uppsala 4, 16-27 [on find of diaspore]
- Larsen, A.O. (2001): Chemical composition of catapleiites from the syenite pegmatites in the Larvik plutonic complex, Norway. Bergverksmuseets Skrift 18, 5-9 [with an analysis of catapleiite from Lille Arøya]
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