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Organovaite-Mn: K2Mn(Nb,Ti)4(Si4O12)2(O,OH)4·6(H2O)
Comments: Crude pink organovaite-Mn pseudomorphs after vuonnemite. Location: Mt. Karnasurt, Lovozero, Kola Peninsula, Russia. Scale: Specimen Size 1.5x2.5 cm. © Diederik Visser