ATHENA MINERALOGY |
Mineral: | GONNARDITE |
---|---|
Formula: | (Na,Ca)6-8[(Al,Si)20O40].12H2O |
Crystal System: | Orthorhombic |
Group: | Zeolite group. Natrolite subgroup |
IMA Number: | 1997 s.p. |
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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