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ATHENA

MINERALOGY

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Mineral: VARENNESITE
Formula: Na8Mn2+2Si10O25(OH,Cl)2.12H2O
Crystal System: Orthorhombic
IMA Number: 1994-017
References: CM 33 (1995), 1073
Type Locality: Demix-Varennes quarry, Varennes, Verchères Co., Québec, Canada

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