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Kukharenkoite-(La): Ba2(La,Ce)(CO3)3F
Comments: Very small olive-green sprays of kukharenkoite-(La) crystals. Location: Kirovsky apatite mine, Mount Kukisvumchorr, Khibina massif, Kola Peninsula, Russia.. Scale: Crystal Size to 0.02 cm. © Jeff Weissman / Photographic Guide to Mineral Species