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Norway | |
| Kolitsch, Uwe, Husdal, Tomas A., Brandstätter, Franz, Ertl, Andreas (2011) New crystal-chemical data for members of the tourmaline group from Norway: occurences of fluor-schorl and luinaite-(OH). Norsk Bergverksmuseum Skrift, 46. 17-24 |
| Färber, Gunnar (n.d.) Personal Communication, Gunnar Färber Mineralien. |