Owl - coll. P.P. ATHENA

MINERALOGY
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Mineral:SCHEUCHZERITE
Formula:Na(Mn,Mg,Zn)9V5+Si9O28(OH)4
Crystal System:Anorthic (Triclinic)
Strunz Nr:8/C.34-15
References:AM 91 (2006), 937
Type Locality:Fianel manganese mine, Val Ferrera, Grischun (Graubünden), Switzerland

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