Magnesioferrite is a magnesium iron oxide mineral, a member of the magnetite series of spinels.

It is named after its chemical composition of magnesium and ferric iron.

Occurs as well-formed fine sized crystals or massive and granular.

It occurs in fumaroles, as a result of combustion metamorphism and coal seam fires, in glass spherules related to meteorite impacts, and as accessory phase in kimberlites and carbonatites.

This article about a specific oxide mineral is a stub.