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ATHENA

MINERALOGY

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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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