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Comments: White to tan translucent crystalline cotunnite on volcanic slag.
Location: Vesuvius, Campania, Italy.
Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species
Cotunnite: PbCl2 Burnsite: KCdCu7O2(SeO3)2Cl9
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