Dravite from selected localities.
Switzerland | |
| Charlotte Redler, Alfred Irouschek, Teresa Jeffries and Reto Gieré (2016): Origin and Formation of Tourmaline-rich Cordierite-bearing Metapelitic Rocks from Alpe Sponda, Central Alps (Switzerland). Journal of Petrology, 57, 277-308. |
| Stalder, H. A., Wagner, A., Graeser, S. and Stuker, P. (1998): "Mineralienlexikon der Schweiz", Wepf (Basel), p. 416. |