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Ferrowyllieite


Ferrowyllieite : (Na,Ca,Mn)(Fe,Mn)(Fe,Fe,Mg)Al(PO4)3

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Locality: Victory Mine (Victory pegmatite; Victory Mica Mine; Hedman Mine), Custer, Custer District, Custer Co., South Dakota, USA
A 3.5 cm piece of pegmatite dominated by massive, black ferrowyllieite that is part of the holotype material described by Moore, P.B. and Ito, J. (1979) Mineral. Magazine 43, 227-235.

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