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ATHENA

MINERALOGY

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Mineral: STEACYITE
Formula: Th(Ca,Na)2K1-xSi8O20
Crystal System: Quadradic (Tetragonal)
Group: Steacyite group
IMA Number: 1981 s.p
References: CM 20 (1982), 59; HB2/2 (1995); Acta Cryst. B28 (1972), 1994
Type Locality: Mont Saint-Hilaire, Rouville Co., Québec, Canada

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