MgSiO
MgSiO is a chemical formula that denotes a magnesium–silicon–oxide composition. It is not, by itself, a widely recognized discrete mineral with a fixed structure; rather, it represents a stoichiometric possibility within the broader family of magnesium silicates that include more specific and well-characterized compounds. The most familiar magnesium silicates are enstatite (MgSiO3) and forsterite (Mg2SiO4), which form extended silicate structures in rocks and minerals. The simple 1:1:1 ratio implied by MgSiO can occur in various contexts—gas-phase molecules, clusters, or components of solid-solution silicate lattices—depending on conditions such as temperature, pressure, and composition.
In geology and materials science, magnesium silicate systems are important for their high melting points, chemical