Chlorite Group from Lake Zervreila, Vals Valley, Vals, Surselva Region, Grisons, Switzerland
Switzerland | |
| Christian Bracke Collection. |
Stalder, H. A., Wagner, A., Graeser, S. and Stuker, P. (1998): "Mineralienlexikon der Schweiz", Wepf (Basel), p. 182. |