MnZn2SiO6 crystallizes in the monoclinic P2_1/c space group. Mn(1) is bonded to one O(1), two equivalent O(5), and three equivalent O(6) atoms to form distorted MnO6 octahedra that share corners with four equivalent Mn(1)O6 octahedra,  a cornercorner with one Si(1)O4 tetrahedra, corners with three equivalent Zn(1)O4 tetrahedra, and edges with two equivalent Mn(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 46-53°. There are two inequivalent Zn sites. In the first Zn site, Zn(1) is bonded to one O(1), one O(2), one O(3), and one O(5) atom to form ZnO4 tetrahedra that share corners with three equivalent Mn(1)O6 octahedra, corners with two equivalent Zn(2)O4 tetrahedra, and corners with three equivalent Si(1)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 57-60°. In the second Zn site, Zn(2) is bonded to one O(2), one O(3), and two equivalent O(4) atoms to form ZnO4 tetrahedra that share corners with two equivalent Zn(1)O4 tetrahedra, corners with two equivalent Zn(2)O4 tetrahedra, and corners with four equivalent Si(1)O4 tetrahedra. Si(1) is bonded to one O(1), one O(2), one O(3), and one O(4) atom to form SiO4 tetrahedra that share  a cornercorner with one Mn(1)O6 octahedra, corners with three equivalent Zn(1)O4 tetrahedra, and corners with four equivalent Zn(2)O4 tetrahedra. The corner-sharing octahedral tilt angles are 51°. There are six inequivalent O sites. In the first O site, O(5) is bonded in a trigonal planar geometry to two equivalent Mn(1) and one Zn(1) atom. In the second O site, O(6) is bonded in a 3-coordinate geometry to three equivalent Mn(1) atoms. In the third O site, O(1) is bonded in a trigonal planar geometry to one Mn(1), one Zn(1), and one Si(1) atom. In the fourth O site, O(2) is bonded in a trigonal non-coplanar geometry to one Zn(1), one Zn(2), and one Si(1) atom. In the fifth O site, O(3) is bonded in a trigonal planar geometry to one Zn(1), one Zn(2), and one Si(1) atom. In the sixth O site, O(4) is bonded in a trigonal planar geometry to two equivalent Zn(2) and one Si(1) atom.
MnZn2SiO6 crystallizes in the monoclinic P2_1/c space group. Mn(1) is bonded to one O(1), two equivalent O(5), and three equivalent O(6) atoms to form distorted MnO6 octahedra that share corners with four equivalent Mn(1)O6 octahedra,  a cornercorner with one Si(1)O4 tetrahedra, corners with three equivalent Zn(1)O4 tetrahedra, and edges with two equivalent Mn(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 46-53°. The Mn(1)-O(1) bond length is 2.00 Å. Both Mn(1)-O(5) bond lengths are 1.91 Å. There are a spread of Mn(1)-O(6) bond distances ranging from 1.88-2.59 Å. There are two inequivalent Zn sites. In the first Zn site, Zn(1) is bonded to one O(1), one O(2), one O(3), and one O(5) atom to form ZnO4 tetrahedra that share corners with three equivalent Mn(1)O6 octahedra, corners with two equivalent Zn(2)O4 tetrahedra, and corners with three equivalent Si(1)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 57-60°. The Zn(1)-O(1) bond length is 1.98 Å. The Zn(1)-O(2) bond length is 2.04 Å. The Zn(1)-O(3) bond length is 1.96 Å. The Zn(1)-O(5) bond length is 1.94 Å. In the second Zn site, Zn(2) is bonded to one O(2), one O(3), and two equivalent O(4) atoms to form ZnO4 tetrahedra that share corners with two equivalent Zn(1)O4 tetrahedra, corners with two equivalent Zn(2)O4 tetrahedra, and corners with four equivalent Si(1)O4 tetrahedra. The Zn(2)-O(2) bond length is 1.97 Å. The Zn(2)-O(3) bond length is 2.00 Å. There is one shorter (1.97 Å) and one longer (1.98 Å) Zn(2)-O(4) bond length. Si(1) is bonded to one O(1), one O(2), one O(3), and one O(4) atom to form SiO4 tetrahedra that share  a cornercorner with one Mn(1)O6 octahedra, corners with three equivalent Zn(1)O4 tetrahedra, and corners with four equivalent Zn(2)O4 tetrahedra. The corner-sharing octahedral tilt angles are 51°. The Si(1)-O(1) bond length is 1.66 Å. The Si(1)-O(2) bond length is 1.64 Å. The Si(1)-O(3) bond length is 1.64 Å. The Si(1)-O(4) bond length is 1.65 Å. There are six inequivalent O sites. In the first O site, O(5) is bonded in a trigonal planar geometry to two equivalent Mn(1) and one Zn(1) atom. In the second O site, O(6) is bonded in a 3-coordinate geometry to three equivalent Mn(1) atoms. In the third O site, O(1) is bonded in a trigonal planar geometry to one Mn(1), one Zn(1), and one Si(1) atom. In the fourth O site, O(2) is bonded in a trigonal non-coplanar geometry to one Zn(1), one Zn(2), and one Si(1) atom. In the fifth O site, O(3) is bonded in a trigonal planar geometry to one Zn(1), one Zn(2), and one Si(1) atom. In the sixth O site, O(4) is bonded in a trigonal planar geometry to two equivalent Zn(2) and one Si(1) atom.