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Tsepinite-Na: (Na,H3O,K,Sr,Ba)2(Ti,Nb)2[Si4O12](OH,O)2·3(H2O)
Comments: Brown, needle-like crystals of tsepinite-Na in matrix. Location: Lephke-Nelm, Lovozero, Kola, Russia. Scale: Crystal size 3 mm. © Tom Loomis / Dakota Matrix
Comments: Subparallel pale tan prismatic tsepinite-Na crystals with vitreous luster. Location: Lepkhe-Nel'm Mt. (Lepkhe-Nelm Mt.), Seidozero Lake, Lovozero Massif, Kola Peninsula, Murmanskaja Oblast', Northern Region, Russia. Scale: See Image. © Rruff Database