Owl - coll. P.P. ATHENA

MINERALOGY
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Mineral:PROSHCHENKOITE-(Y)
Formula:(Y,REE,Ca,Na,Mn)15(Fe2+,Mn)Ca(P,Si)Si6B3O34F14
Crystal System:Rhomboedral (Trigonal)
Strunz Nr:8/B.33-26
References:MM 73 (2009), 1071
Type Locality:Tommot REE-Nb deposit, Yakutia, Russia

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