Acta Cryst. (2003). E59, i7-i9  [ doi:10.1107/S1600536803000837 ]

The alluaudite-like phosphate Na_1.79Mg_1.79Fe_1.21(PO₄)₃

M. Hidouri, B. Lajmi, A. Driss and M. Ben Amara

Abstract: The title phosphate, Na_1.79Mg_1.79Fe_1.21(PO₄)₃ (sodium magnesium iron phosphate), has been prepared as single crystals and its structure determined from X-ray diffraction data. The structure belongs to the alluaudite structure type, characterized by the X2X1M1M2₂(PO₄)₃ general formula. The Na⁺ ions occupy the large X2 and X1 sites, the Fe³⁺ ions partially occupy the M2 site and the Mg²⁺ ions are distributed over the M1 and M2 sites.

Online 17 January 2003

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