Saga 1 Quarry, Sagåsen (Strandåsen), Mørje, Porsgrunn, Telemark, Norway

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.

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.

- http://home.c2i.net/aolarsen/Pegmatites.htm