MgFeSiO

MgFeSiO is not a recognized mineral name or a standard chemical formula for a discrete compound in mainstream mineralogical or materials databases. As written, the formula does not correspond to a neutral oxide or silicate with a single, well-defined stoichiometry, and there is no widely accepted phase known by this exact composition. If encountered, MgFeSiO is typically interpreted as an informal shorthand, a placeholder for a mixed magnesium–iron silicate, or possibly a typographical error for another common formula.

In natural geology, magnesium and iron commonly occur together in silicate minerals, but within defined structural families. The olivine group, for example, has the solid solution (Mg,Fe)2SiO4, with end-members forsterite (Mg2SiO4) and fayalite (Fe2SiO4). Pyroxenes include silicates such as enstatite (MgSiO3) and ferrosilite (FeSiO3). These minerals form extensive solid solutions and are major constituents of the Earth’s mantle and many meteorites, influencing melting behavior, density, and seismic properties.

If MgFeSiO appears in literature, it is more likely to reflect a hypothetical or simplified description of a Mg–Fe silicate system or a misprint for another established formula (such as MgSiO3 or (Mg,Fe)2SiO4). In materials science, researchers study ternary oxide or silicate systems involving MgO, FeO, and SiO2, but the exact MgFeSiO composition is not a standard, well-characterized phase.

See also: olivine, pyroxene, silicate minerals, magnesium silicate, iron silicate.