Crystalline Mg₂SiO₄ and amorphous Mg-bearing silicate grain formation by coalescence and growth

A novel method for producing MgO and SiO₂ smokes was developed. Mg-bearing silicate grain formation using the coalescence and growth of MgO and SiO₂ grains was carried out in our laboratory. It becomes evident that single and poly crystalline Mg₂SiO₄ (forsterite) and amorphous Mg-bearing silicate grains can be produced by the coalescence and growth of MgO and SiO₂ grains. This result suggests that the observed crystalline Mg₂SiO₄ grains and amorphous Mg-bearing silicate particles in Red Super Giant (RSG), Asymptotic Giant Branch (AGB), post-AGB and planetary nebula (PNe) could be produced by the coalescence and growth of MgO and SiO₂ grains.