(Arvigo, Val Calanca, Misox (Val Mesolcina), Graubünden (Grisons; Grischun), Schweiz (Suisse; Svizzera))
Quarries in biotite gneisses.
Access and collecting is strictly forbidden since 2007.
Swiss coordinates 727´996 / 128´975.
Refs.:
- Weiss, S. and Forster, O. (1997): Lapis 22(6), 13-42.
- Wagner, A. and Stalder, H.A. (2000). "Arvigo - L'une des localités les plus connue de Suisse (1° partie)." Le Cristallier Suisse, 12(2), 41-70.
Mineral List:33 entries listed. 25 valid minerals.
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