Alluaudite is a relatively common alkaline manganese iron phosphate mineral with the chemical formula (Na,Ca)Mn2+(Fe3+,Mn2+,Fe2+,Mg)2(PO4)3.

It occurs as metasomatic replacement in granitic pegmatites and within phosphatic nodules in shales.

[3] It was first described in 1848 for an occurrence in Skellefteå, Västerbotten, Sweden.

It was named by Alexis Damour after François Alluaud (II) (1778–1866).

[5] This article about a specific phosphate mineral is a stub.