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Tinaksite: K2Na(Ca,Mn++)2(Ti,Fe)O[Si7O18(OH)] Charoite: K5Ca8(Si6O15)2(Si2O7)Si4O9(OH)·3(H2O)
Comments: Yellow-brown prismatic tinaksite crystals in purple charoite with black aegirine. Location: Murun, Aldan Uplift, Chara and Olekma Rivers, near Olekminsk, Republic of Sakha, Siberia, Russia. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Comments: Polished slab of deep purple chariote with inclusions of black augite, white feldspar and orange tinaksite. Location: Murun, Siberia, Russia. Scale: Picture size 10 cm. © Kevin Ward