Quartz from Northeast slope, Pizzo dell'Arzo, Cavagnöö Glacier (Cavagnoli Glacier; Cavagnöö area; Cavagnoli area), Robièi (Alpe di Robièi; Lake Robièi area), Bavona Valley, Cevio, Vallemaggia, Ticino, Switzerland
Switzerland | |
| [var. Smoky Quartz] Stalder, H. A., Wagner, A., Graeser, S., and Stuker, P. (1998) Mineralienlexikon der Schweiz. Verlag Wepf & Co. AG, Basel, page 23. Weiß, Stefan (1982) Das Cavagnoli-Gebiet [The Cavagnoli area]. Lapis, 7 (7-8) 17-25 |