(Rio del Castello, Alpe Cedo, Valle Basso, Santa Maria Maggiore, Val Vigezzo, Val d'Ossola, Verbano-Cusio-Ossola, Piemonte, Italia)
In this area has been found aschalmalmite along the contact between small quartz veins and amphibolites (and schists) which represent the embedding rocks. The crystals come from the higher portion of Rio del Castello, located between Alpe Cedo and Alpe Geccio (Southern side of Ragno Peak).
References:
- Perchiazzi, N. (1989): Aschamalmite: secondo ritrovamento in natura presso l'Alpe Cedo, Val d'Ossola. Rivista Mineralogica Italiana, 4/1989, 238-240.
- Piccoli, G.C., Maletto, G., Bosio, P., Lombardo, B. (2007). Minerali del Piemonte e della Valle d'Aosta. Associazione Amici del Museo "F. Eusebio" Alba, Ed., Alba (Cuneo) 607 pp.
Mineral List:8 entries listed. 8 valid minerals.
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