K Feldspar from Lake Zervreila, Vals Valley, Vals, Surselva Region, Grisons, Switzerland
Switzerland | |
| [var. Adularia] Mineralogical Record (2001) 32:249 Christian Bracke Collection. |
[var. Adularia] Stalder, H. A., Wagner, A., Graeser, S. and Stuker, P. (1998): "Mineralienlexikon der Schweiz", Wepf (Basel), p. 182. |