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ATHENA

MINERALOGY

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Mineral: PERHAMITE
Formula: (Ca,Sr)3Al7,7Si3P4O23,5(OH)14,1.8H2O
Crystal System: Rhombohedral (Trigonal) pseudo Hexagonal
IMA Number: 1975-019
References: MM 41 (1977), 437; HB2/2 (1995); MM 70 (2006), 201; AM 91 (2006), 1949
Type Locality: Bell Pit, Newry, Oxford Co., Maine, USA

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