Larvikite Quarry that laid at a higher level, where the Sagåsen Quarry is today, also with a large nepheline-syenite pegmatite, but different from the one in Sagåsen (Saga 3). The Saga 1 pegmatite was worked out, and disappeared with the quarry. More than 70 different species have been found in the Saga 1 pegmatite, approximately 40% of all minerals found in the syenite pegmatites in the whole Oslo Region. It was especially rich in Be-minerals, with 12 different species. The pegmatite also became famous for huge individuals of certain minerals: Biotite - 50-70 kg, leucophanite - several kg, mosandrite crystals - ¾ m in length, thorite - several kg, nepheline - several hundreds of kg, böhmite crystals - 3 mm.
Ref.:
- 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
- Berge S.A. & Hansen, R.(1981): Mineralnotater. NAGS-nytt 8 (1), 22 (in norwegian)
- Hansen, R. & Berge,S.A.(1982): Mineralnotater. NAGS-nytt 9 (1),14 (in norwegian)
- Engvoldsen, T., Andersen, F., Berge, S.A. & Burvald, I. (1991): Pegmatittmineraler fra Larvik ringkompleks. STEIN 18(1),15-71
- Larsen, A.O.(1981): Thomsonitt fra Tvedalen. NAGS-Nytt 8 (2),34-35. (in norwegian)
- Larsen, A.O.(1981): Boehmitt, AlO(OH), fra Sagabruddene i Tvedalen. NAGS-Nytt 8 (3), 25-26 (in norwegian)
- Larsen, A.O. (1981): Boehmite from syenite pegmatites in the Oslo region, Norway. Mineralogical Record 12, 227-230
- Larsen, A.O. , Asheim, A. and Berge, S.A. (1987): Bromellite from syenite pegmatite, Southern Oslo region, Norway. Canadian mineralogist, 25,425-428.
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