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ATHENA

MINERALOGY

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Mineral: GEIGERITE
Formula: Mn5(H2O)8(AsO3OH)2(AsO4)2.2H2O
Crystal System: Anorthic (Triclinic)
Group: Lindackerite supergroup. Ondrusite group
IMA Number: 1985-028
References: AM 74 (1989), 676; SS (1991), 59; HB4 (2000)
Type Locality: Falotta, Sursass, Tinizong, Grischun (Graub√ľnden), Switzerland

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