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Chloromenite: Cu9O2(SeO3)4Cl6 Melanothallite: Cu2OCl2
Comments: Olive green crystalline chloromenite on blue-green melanothallite. Location: North Break, Second Cone of main fracture eruption, Tolbachik Volcano, Kamchatka District, Russia. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species