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Labyrinthite: (Na,K,Sr)35Ca12Fe3Zr6TiSi51O144(O,OH,H2O)9Cl3
Comments: Rose-colored crystal fragment of labyrinthite. Location: Koashva Mt., Khibiny Massif, Kola Peninsula, Russia. Scale: Crystal Size 3 mm. © Sergey Vasiliev / Systematic Mineralogy