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ATHENA

MINERALOGY

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Mineral: EGGLETONITE
Formula: NaxMn2+6(Si,Al)10O24(OH)4(H2O)n (x=1-2; n=7-11)
Crystal System: Monoclinic
Group: Ganophyllite group
IMA Number: 1982-059
References: MM 48 (1984), 93; HB2/1 (1995)
Type Locality: Big Rock Quarry, Little Rock, Pulaski Co., Arkansas, USA

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