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Normandite: NaCa(Mn++,Fe++)(Ti,Nb,Zr)Si2O7(O,F)2
Comments: Divergent acicular normandite crystals in pegmatite. Location: Mount Partomchorr, Khibiny Massif, Kola Peninsula, Murmansk District, Russia. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species