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ATHENA

MINERALOGY

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Mineral: MONTROYALITE
Formula: Sr4Al8(CO3)3(OH,F)26.10-11H2O
Crystal System: Anorthic (Triclinic) (?)
Group: Related to Dresserite group
IMA Number: 1985-001
References: CM 24 (1986), 455; HB5 (2003)
Type Locality: Francon quarry, St-Michel distr., Montreal Island, Qu├ębec, Canada

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