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Georgbarsanovite: Na12(Mn,Sr,REE)3Ca6Fe++3Zr3NbSi25O76Cl2·H2O
Comments: A small translucent crystalline fragment of georgbarsanovite, from the type locality. Location: Nepheline pegmatite outcrop, Petrelius River, Khibiny Massif, Kola Peninsula, Murmanskaja Oblast', Northern Region, Russia. Scale: Fragment Size 0.05 cm,. © Jeff Weissman / Photographic Guide to Mineral Species