Ryggkollen, Nedre Eiker kommune, Buskerud fylke, Norge
Minerals found in august 2006 at Ryggkollen during the construction of a new alignment of the E 134 highway. This locality is no longer available.
Notable nice spheres of black tourmaline (schorl ?) up to 2,3 cm in diameter were found.
Some materiale from the construction of the highway E 134 was dumped in the sand quarry at Ryggkollen.
References
- Nordrum, F.S. (2000). Nyfunn av mineraler i Norge 1999-2000. Bergverksmuseets Skrift 17:59-63
- Nordrum, F.S. (2001): Noen funn av mineraler i Norge 2000-2001. STEIN 28 (2): 13- 19
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