Molecular dynamics simulation of amorphous ZrO 2SiO 2 containing 10, 30 and 50 mol% of ZrO 2 has been performed using Born-Mayer-Huggins pair potentials. Various pair distribution functions are presented and discussed. These results reveal an inherent tendency of the Zr atoms towards clustering, even at low concentrations. Also the oxygen environment of Zr suggests edge sharing of [ SiO 4 2 ] tetrahedra at high ZrO 2 concentrations while at low concentrations thet are predominantly in corner-sharing geometry. Features suggesting the formation of zircon type structures have been observed in 50ZrO 250SiO 2. These conclusions are supported by mean square displacement data as well.