Mg2SiO4 crystallizes in the tetragonal I-42d space group. Mg(1) is bonded to four equivalent O(1) atoms to form MgO4 tetrahedra that share corners with four equivalent Mg(1)O4 tetrahedra and corners with four equivalent Si(1)O4 tetrahedra. Si(1) is bonded to four equivalent O(1) atoms to form SiO4 tetrahedra that share corners with eight equivalent Mg(1)O4 tetrahedra. O(1) is bonded in a trigonal planar geometry to two equivalent Mg(1) and one Si(1) atom.
Mg2SiO4 crystallizes in the tetragonal I-42d space group. Mg(1) is bonded to four equivalent O(1) atoms to form MgO4 tetrahedra that share corners with four equivalent Mg(1)O4 tetrahedra and corners with four equivalent Si(1)O4 tetrahedra. There are two shorter (1.96 Å) and two longer (1.98 Å) Mg(1)-O(1) bond lengths. Si(1) is bonded to four equivalent O(1) atoms to form SiO4 tetrahedra that share corners with eight equivalent Mg(1)O4 tetrahedra. All Si(1)-O(1) bond lengths are 1.64 Å. O(1) is bonded in a trigonal planar geometry to two equivalent Mg(1) and one Si(1) atom.