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 has been worked out, and disappeared with the quarry. More than 70 different species were 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. The pegmatite was a flatlying dyke, about 2,5 m thick and its horizontal extension was about 60 x 120 m.
Mineral List
77 entries listed. 70 valid minerals. 1 erroneous literature entry.
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References
- Berge S. A. & Hansen, R. (1981): Mineralnotater. NAGS-nytt 8 (1), 22
- Larsen, A. O. (1981): Thomsonitt fra Tvedalen. NAGS-Nytt 8 (2),34-35.
- Larsen, A. O. (1981): Boehmitt, AlO(OH), fra Sagabruddene i Tvedalen. NAGS-Nytt 8 (3), 25-26
- Larsen, A. O. (1981): Boehmite from syenite pegmatites in the Oslo region, Norway. Mineralogical Record 12, 227-230
- Hansen, R. & Berge, S. A. (1982): Mineralnotater. NAGS-nytt 9 (1),14
- Larsen, A.O., Asheim, A. and Berge, S. A. (1987): Bromellite from syenite pegmatite, Southern Oslo region, Norway. Canadian mineralogist, 25,425-428.
- Ljøstad, O.T. (1988): Mimetitt. NAGS-nytt 15 (1-4), p. 23 [on the find of mimetite in the Saga Quarry]
- Larsen, A. O. (1988): Helvite group minerals from syenite pegmatites in the Oslo Region, Norway. Contribution to the mineralogy of Norway no 68. Norsk Geologisk Tidsskrift 68: 119-124 [with analysis of helvites from Saga 1)
- Giuseppetti, G., Mazzi, F., Tadini, C., Larsen, A. O., Åsheim, A. & Raade, G. (1990): Berborite polytypes. Neues Jahrbuch für Mineralogie-Abhandlungen 162 (1): 101-116
- Engvoldsen, T., Andersen, F., Berge, S. A. & Burvald, I. (1991): Pegmatittmineraler fra Larvik ringkompleks. STEIN 18(1), 15-71.
- 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
- Larsen, A.O. & Erambert, M. (2005): Neotocite and hisingerite from nepheline syenite pegmatites in the Larvik plutonic complex, Norway. Norsk Bergverksmuseum Skrifter 30:68-71 [with analysis of neotocite and hisingerite from Saga 1 Quarry].
- Larsen, A. O. (ed.) (2010): The Langesundsfjord. History, geology, pegmatites, minerals. Bode Verlag Gmbh, Salzhemmendorf, Germany, 240 pp.
- Larsen, A.O. & Erambert, Muriel (2010): Mosandritt og rinkitt fra nefelinsyenittpegmatitter i Langesundsfjordområdet. Norsk Bergverksmuseum Skrift.43: 95-102 [with an analysis of rinkite from this locality]
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