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Burnsite: KCdCu7O2(SeO3)2Cl9 Cotunnite: PbCl2
Comments: Images of burnsite grains (dark) in intimate intergrowth with cotunnite (light). Images obtained by scanning electron microscopy. Location: North Breach of the great fissure Tolbachik volcano eruption (1975-1976), Kamchatka Peninsula, Russia. Scale: Scale bar: 20 µ-m. © Canadian Mineralogist