Owl - coll. P.P. ATHENA

MINERALOGY
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Mineral:THORNASITE
Formula:Na12Th3(Si8O19)4 · 18H2O
Crystal System:Rhomboedral (Trigonal)
Strunz Nr:8/D.20-40
References:CM 25 (1987), 181; HB2/2 (1995); AM 85 (2000), 1521
Type Locality:Demix-Varennes quarry, Mont Saint-Hilaire, Rouville Co., Québec, Canada

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