Abandoned larvikite quarry with syenite pegmatites situated in Tvedalen 10km W of the town larvik.
References:
- 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 [in part]
- Engvoldsen, T., Andersen, F., Berge, S. A. & Burvald, I. (1991): Pegmatittmineraler fra Larvik ringkompleks. STEIN 18 (1), 15-71
Mineral List:37 entries listed. 33 valid minerals.
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