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ATHENA

MINERALOGY

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Mineral:GONNARDITE
Formula:(Na,Ca)6-8[(Al,Si)20O40] · 12H2O
Crystal System:Orthorhombic
Strunz Nr:8/J.21-40
Group:Zeolite group
References:MM 52 (1988), 207; HB2/1 (1995); EJM 10 (1998), 1037; AM 84 (1999), 1445
Type Locality:Chaux-de-Bergonne, Gignat, Puy-de-Dôme, France

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