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ATHENA

MINERALOGY

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Mineral: YOFORTIERITE
Formula: (Mn,Mg)5Si8O20(OH)2.8-9H2O
Crystal System: Monoclinic
Group: Palygorskite group
IMA Number: 1974-045
References: CM 13 (1975), 68; HB2/2 (1995)
Type Locality: Demix quarry, Mont Saint-Hilaire, Rouville Co., Québec, Canada

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