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Kochsandorite: CaAl2(CO3)2(OH)4·H2O
Comments: Pearly circles of radiating white microcrystals of kochsandorite on coal. Location: Many coal deposit, Bicske-Zsambeki Basin, Tatabanya. Scale: 2.5x1.7x1.1 cm. © Richard Dale / Dale Minerals
Comments: White fibers of kochandorite on coal-marl matrix. Location: Mány coal field, Tatabánya, Hungary. Scale: See Image. © Jeff Weissman / Photographic Guide to Mineral Species