Owl - coll. P.P. ATHENA

MINERALOGY
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Mineral:STEACYITE
Formula:Th(Ca,Na)2K1-xSi8O20
Crystal System:Quadratic (Tetragonal)
Strunz Nr:8/E.10-30
Group:Iraquite Group
References:CM 20 (1982), 59; HB2/2 (1995)
Type Locality:Mont Saint-Hilaire, Rouville Co., Québec, Canada

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