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Birnessite from
Prabornaz Mine (Praborna Mine), Saint-Marcel, Aosta Valley, Italy

Locality type:Mine
Classification
Species:Birnessite
Formula:(Na,Ca)0.5(Mn4+,Mn3+)2O4 · 1.5H2O
Confirmation
Validity:Believed Valid
References
References: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.
Data
Mineral Data:Click here to view Birnessite data
Locality Data:Click here to view Prabornaz Mine (Praborna Mine), Saint-Marcel, Aosta Valley, Italy
Nearest other occurrences of Birnessite
12.6km (7.8 miles) Varenche Mine, Saint-Barthélemy, Nus, Aosta Valley, Italy
58.1km (36.1 miles) Pipji glacier, Pipjitälli, Turtmann Valley, Turtmann-Unterems, Leuk, Valais, Switzerland
 
Mineral and/or Locality  
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