ATHENA MINERALOGY |
Mineral: | FRANZINITE |
---|---|
Formula: | (Na,K)6Ca2(SO4)2Al6Si6O24.0,5H2O |
Crystal System: | Hexagonal |
Group: | Feldspathoid group. Cancrinite group |
IMA Number: | 1976-020 |
References: | NJMM (1977), 163; HB2/1 (1995); CM 38 (2000), 657 |
Type Locality: | Pitigliano, Grosseto prov., Toscana (Tuscany), Italy |
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