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Bornemanite: BaNa3{(Na,Ti)4[(Ti,Nb)2O2Si4O14](F,OH)2}·PO4
Comments: Pale yellow or peach colored, massive bornemanite. Location: Lovozero Massif, Kola Peninsula, Murmanskaja Oblast', Northern Region, Russia. Scale: Picture size 5 mm. © Tom Loomis / Dakota Matrix
Bornemanite: BaNa3{(Na,Ti)4[(Ti,Nb)2O2Si4O14](F,OH)2}·PO4 Lomonosovite: Na5Ti2O2(Si2O7)(PO4)
Comments: Yellow crystalline bornemanite in dark brown lomonosovite. Location: Yubileinaya Pegmatite, Lovozero Massif, Kola Peninsula, Murmansk District, Russia. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species