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Shafranovskite: K2Na3(Mn++,Fe++,Na)4[Si9(O,OH)27](OH)2·n(H2O), n~2.33
Comments: Yellow-brown fine grained shafranovskite with red eudialyte and black aegirine. Location: Mount Rasvumchorr, Khibiny Massif, Kola Peninsular, Murmansk District, Russia. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species