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Brizziite-VII: NaSb+++++O3 Brizziite-III: NaSb+++++O3
Comments: Colorless thin hexagonal plates of brizziite. Brizzite-VII and brizzite-III are the same mineral with different Dana classification numbers. Location: Le Cetine di Cotorniano, Chiusdino, Siena Province, Tuscany, Italy. Scale: See Image. © Rruff Database