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Meionite: Ca4Al6Si6O24CO3
Comments: Clear meionite crystal on matrix. Location: Monte Somma (Vesuvius), Campania, Italy. Scale: Not Given. © Lou Perloff / Photo Atlas of Minerals
Meionite: Ca4Al6Si6O24CO3 Kaliophilite: KAlSiO4
Comments: Tan to white fibrous kaliophilite crystal bundle with white translucent meionite on matrix. Location: Mont Somma, Naples, Campania, Italy. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species