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ATHENA

MINERALOGY

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Mineral: TURTMANNITE
Formula: (Mn,Mg)22,5Mg3-3x[(V,As)O4]3[SiO4]3[AsO3]xO5-5x(OH)20+x
Crystal System: Rhombohedral (Trigonal) pseudo Hexagonal
IMA Number: 2000-007
References: AM 86 (2001), 1494; MR 3 (2003), 270
Type Locality: Pipjigletscher, Turtmanntal (Turtmann Valley), Wallis (Valais), Switzerland

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