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ATHENA

MINERALOGY

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Mineral: SCHALLERITE
Formula: (Mn2+,Fe2+)16Si12As3+3O36(OH)17
Crystal System: Rhombohedral (Trigonal)
Group: Pyrosmalite group
IMA Number: 1925
References: AM 66 (1981), 1054; HB2/2 (1995)
Type Locality: Franklin, Sussex Co, New Jersey, USA

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