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Rio del Castello, Cedo Alp, Basso Valley, Santa Maria Maggiore, Vigezzo Valley, Ossola Valley, Verbano-Cusio-Ossola Province, Piedmont, Italy

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Name(s) in local language(s): Rio del Castello, Alpe Cedo, Valle di Basso, Santa Maria Maggiore, Val Vigezzo, Val d'Ossola, Provincia del Verbano-Cusio-Ossola, Piemonte, Italia
 
Quartz veins embedded in amphibolite (and phlogopite schist) cropping out in the higher portion of Rio del Castello, between Alpe Cedo and Alpe Al Geccio (southern slope of Pizzo Ragno).

The typical paragenesis of theese quartz veins consists of aschalmalmite, sometimes intimately admixed with heyrovskýite (Boscardin et al., 2013), in association with galena, pyrite, cerussite, and scheelite.

The mica mineral of the phlogopite schist and from the contact zone of quartz veins (in association with galena and pyrite) is fluorophlogopite (3 T-polytype).

Meionite crystals have been found in amphibolite, at the contact with gneiss and serpentinite, cropping out near Alpe Cedo, at an elevation of about 1600 m.

Mineral List



11 entries listed. 11 valid minerals.

The above list contains all mineral locality references listed on mindat.org. This does not claim to be a complete list. If you know of more minerals from this site, please register so you can add to our database. This locality information is for reference purposes only. You should never attempt to visit any sites listed in mindat.org without first ensuring that you have the permission of the land and/or mineral rights holders for access and that you are aware of all safety precautions necessary.

References

- Mattioli V. (1979): Minerali Ossolani. Ed. Arti Grafiche Medesi, Milano, 268 pp.
- Perchiazzi N. (1989): Aschamalmite: secondo ritrovamento in natura presso l'Alpe Cedo, Val d'Ossola. Rivista Mineralogica Italiana, 13, 4, 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" di Alba, Ed., Alba, 607 pp.
- Boscardin M., Mattioli V., Rocchetti I. (2013): Minerali della Valle Vigezzo. Litotipografia Alcione, Lavis (Trento), 229 pp.

 
Mineral and/or Locality  
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