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ATHENA

MINERALOGY

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Mineral: WYLLIEITE
Formula: NaNaMn(Fe2+Al)(PO4)3
Crystal System: Monoclinic
Group: Alluaudite supergroup. Wyllieite group
IMA Number: 1972-015
References: MM 43 (1979), 227; HB4 (2000)
Type Locality: Old Mike mine, Custer, Custer Co., South Dakota, USA

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