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ATHENA

MINERALOGY

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Mineral: COOMBSITE
Formula: K(Mn2+,Fe2+,Mg)13(Si,Al)18O42(OH)14
Crystal System: Rhombohedral (Trigonal)
IMA Number: 1989-058
References: NZ J. Geol. Geoph. 34 (1991), 329; HB2/1 (1995); NM 90-94 (1997)
Type Locality: Watson's Beach, Otago, South Island, New Zealand

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