MgWMnS4 is Hausmannite-derived structured and crystallizes in the triclinic P1 space group. There are two inequivalent Mg sites. In the first Mg site, Mg(1) is bonded to one S(1), one S(5), one S(6), and one S(8) atom to form MgS4 tetrahedra that share corners with three equivalent W(1)S6 octahedra, corners with three equivalent W(2)S6 octahedra, corners with three equivalent Mn(1)S6 octahedra, and corners with three equivalent Mn(2)S6 octahedra. The corner-sharing octahedral tilt angles range from 53-63°. In the second Mg site, Mg(2) is bonded to one S(2), one S(3), one S(4), and one S(7) atom to form MgS4 tetrahedra that share corners with three equivalent W(1)S6 octahedra, corners with three equivalent W(2)S6 octahedra, corners with three equivalent Mn(1)S6 octahedra, and corners with three equivalent Mn(2)S6 octahedra. The corner-sharing octahedral tilt angles range from 46-67°. There are two inequivalent W sites. In the first W site, W(1) is bonded to one S(2), one S(3), one S(4), one S(5), one S(6), and one S(8) atom to form distorted WS6 octahedra that share corners with three equivalent Mg(1)S4 tetrahedra, corners with three equivalent Mg(2)S4 tetrahedra, edges with two equivalent W(2)S6 octahedra, edges with two equivalent Mn(1)S6 octahedra, and edges with two equivalent Mn(2)S6 octahedra. In the second W site, W(2) is bonded to one S(1), one S(2), one S(3), one S(5), one S(7), and one S(8) atom to form distorted WS6 octahedra that share corners with three equivalent Mg(1)S4 tetrahedra, corners with three equivalent Mg(2)S4 tetrahedra, edges with two equivalent W(1)S6 octahedra, edges with two equivalent Mn(1)S6 octahedra, and edges with two equivalent Mn(2)S6 octahedra. There are two inequivalent Mn sites. In the first Mn site, Mn(1) is bonded to one S(1), one S(3), one S(4), one S(5), one S(6), and one S(7) atom to form MnS6 octahedra that share corners with three equivalent Mg(1)S4 tetrahedra, corners with three equivalent Mg(2)S4 tetrahedra, edges with two equivalent W(1)S6 octahedra, edges with two equivalent W(2)S6 octahedra, and edges with two equivalent Mn(2)S6 octahedra. In the second Mn site, Mn(2) is bonded to one S(1), one S(2), one S(4), one S(6), one S(7), and one S(8) atom to form MnS6 octahedra that share corners with three equivalent Mg(1)S4 tetrahedra, corners with three equivalent Mg(2)S4 tetrahedra, edges with two equivalent W(1)S6 octahedra, edges with two equivalent W(2)S6 octahedra, and edges with two equivalent Mn(1)S6 octahedra. There are eight inequivalent S sites. In the first S site, S(1) is bonded in a distorted rectangular see-saw-like geometry to one Mg(1), one W(2), one Mn(1), and one Mn(2) atom. In the second S site, S(2) is bonded in a distorted rectangular see-saw-like geometry to one Mg(2), one W(1), one W(2), and one Mn(2) atom. In the third S site, S(3) is bonded in a distorted rectangular see-saw-like geometry to one Mg(2), one W(1), one W(2), and one Mn(1) atom. In the fourth S site, S(4) is bonded to one Mg(2), one W(1), one Mn(1), and one Mn(2) atom to form distorted SMgMn2W tetrahedra that share  a cornercorner with one S(7)MgMn2W tetrahedra, corners with two equivalent S(5)MgMnW2 trigonal pyramids, corners with two equivalent S(8)MgMnW2 trigonal pyramids, and  an edgeedge with one S(7)MgMn2W tetrahedra. In the fifth S site, S(5) is bonded to one Mg(1), one W(1), one W(2), and one Mn(1) atom to form distorted SMgMnW2 trigonal pyramids that share corners with two equivalent S(4)MgMn2W tetrahedra, corners with two equivalent S(7)MgMn2W tetrahedra,  a cornercorner with one S(8)MgMnW2 trigonal pyramid, and  an edgeedge with one S(8)MgMnW2 trigonal pyramid. In the sixth S site, S(6) is bonded in a distorted rectangular see-saw-like geometry to one Mg(1), one W(1), one Mn(1), and one Mn(2) atom. In the seventh S site, S(7) is bonded to one Mg(2), one W(2), one Mn(1), and one Mn(2) atom to form distorted SMgMn2W tetrahedra that share  a cornercorner with one S(4)MgMn2W tetrahedra, corners with two equivalent S(5)MgMnW2 trigonal pyramids, corners with two equivalent S(8)MgMnW2 trigonal pyramids, and  an edgeedge with one S(4)MgMn2W tetrahedra. In the eighth S site, S(8) is bonded to one Mg(1), one W(1), one W(2), and one Mn(2) atom to form distorted SMgMnW2 trigonal pyramids that share corners with two equivalent S(4)MgMn2W tetrahedra, corners with two equivalent S(7)MgMn2W tetrahedra,  a cornercorner with one S(5)MgMnW2 trigonal pyramid, and  an edgeedge with one S(5)MgMnW2 trigonal pyramid.
MgWMnS4 is Hausmannite-derived structured and crystallizes in the triclinic P1 space group. There are two inequivalent Mg sites. In the first Mg site, Mg(1) is bonded to one S(1), one S(5), one S(6), and one S(8) atom to form MgS4 tetrahedra that share corners with three equivalent W(1)S6 octahedra, corners with three equivalent W(2)S6 octahedra, corners with three equivalent Mn(1)S6 octahedra, and corners with three equivalent Mn(2)S6 octahedra. The corner-sharing octahedral tilt angles range from 53-63°. The Mg(1)-S(1) bond length is 2.44 Å. The Mg(1)-S(5) bond length is 2.46 Å. The Mg(1)-S(6) bond length is 2.45 Å. The Mg(1)-S(8) bond length is 2.47 Å. In the second Mg site, Mg(2) is bonded to one S(2), one S(3), one S(4), and one S(7) atom to form MgS4 tetrahedra that share corners with three equivalent W(1)S6 octahedra, corners with three equivalent W(2)S6 octahedra, corners with three equivalent Mn(1)S6 octahedra, and corners with three equivalent Mn(2)S6 octahedra. The corner-sharing octahedral tilt angles range from 46-67°. The Mg(2)-S(2) bond length is 2.46 Å. The Mg(2)-S(3) bond length is 2.46 Å. The Mg(2)-S(4) bond length is 2.38 Å. The Mg(2)-S(7) bond length is 2.38 Å. There are two inequivalent W sites. In the first W site, W(1) is bonded to one S(2), one S(3), one S(4), one S(5), one S(6), and one S(8) atom to form distorted WS6 octahedra that share corners with three equivalent Mg(1)S4 tetrahedra, corners with three equivalent Mg(2)S4 tetrahedra, edges with two equivalent W(2)S6 octahedra, edges with two equivalent Mn(1)S6 octahedra, and edges with two equivalent Mn(2)S6 octahedra. The W(1)-S(2) bond length is 2.37 Å. The W(1)-S(3) bond length is 2.37 Å. The W(1)-S(4) bond length is 2.44 Å. The W(1)-S(5) bond length is 2.60 Å. The W(1)-S(6) bond length is 2.45 Å. The W(1)-S(8) bond length is 2.60 Å. In the second W site, W(2) is bonded to one S(1), one S(2), one S(3), one S(5), one S(7), and one S(8) atom to form distorted WS6 octahedra that share corners with three equivalent Mg(1)S4 tetrahedra, corners with three equivalent Mg(2)S4 tetrahedra, edges with two equivalent W(1)S6 octahedra, edges with two equivalent Mn(1)S6 octahedra, and edges with two equivalent Mn(2)S6 octahedra. The W(2)-S(1) bond length is 2.45 Å. The W(2)-S(2) bond length is 2.37 Å. The W(2)-S(3) bond length is 2.37 Å. The W(2)-S(5) bond length is 2.60 Å. The W(2)-S(7) bond length is 2.44 Å. The W(2)-S(8) bond length is 2.60 Å. There are two inequivalent Mn sites. In the first Mn site, Mn(1) is bonded to one S(1), one S(3), one S(4), one S(5), one S(6), and one S(7) atom to form MnS6 octahedra that share corners with three equivalent Mg(1)S4 tetrahedra, corners with three equivalent Mg(2)S4 tetrahedra, edges with two equivalent W(1)S6 octahedra, edges with two equivalent W(2)S6 octahedra, and edges with two equivalent Mn(2)S6 octahedra. The Mn(1)-S(1) bond length is 2.46 Å. The Mn(1)-S(3) bond length is 2.71 Å. The Mn(1)-S(4) bond length is 2.48 Å. The Mn(1)-S(5) bond length is 2.53 Å. The Mn(1)-S(6) bond length is 2.47 Å. The Mn(1)-S(7) bond length is 2.47 Å. In the second Mn site, Mn(2) is bonded to one S(1), one S(2), one S(4), one S(6), one S(7), and one S(8) atom to form MnS6 octahedra that share corners with three equivalent Mg(1)S4 tetrahedra, corners with three equivalent Mg(2)S4 tetrahedra, edges with two equivalent W(1)S6 octahedra, edges with two equivalent W(2)S6 octahedra, and edges with two equivalent Mn(1)S6 octahedra. The Mn(2)-S(1) bond length is 2.46 Å. The Mn(2)-S(2) bond length is 2.72 Å. The Mn(2)-S(4) bond length is 2.48 Å. The Mn(2)-S(6) bond length is 2.46 Å. The Mn(2)-S(7) bond length is 2.48 Å. The Mn(2)-S(8) bond length is 2.52 Å. There are eight inequivalent S sites. In the first S site, S(1) is bonded in a distorted rectangular see-saw-like geometry to one Mg(1), one W(2), one Mn(1), and one Mn(2) atom. In the second S site, S(2) is bonded in a distorted rectangular see-saw-like geometry to one Mg(2), one W(1), one W(2), and one Mn(2) atom. In the third S site, S(3) is bonded in a distorted rectangular see-saw-like geometry to one Mg(2), one W(1), one W(2), and one Mn(1) atom. In the fourth S site, S(4) is bonded to one Mg(2), one W(1), one Mn(1), and one Mn(2) atom to form distorted SMgMn2W tetrahedra that share  a cornercorner with one S(7)MgMn2W tetrahedra, corners with two equivalent S(5)MgMnW2 trigonal pyramids, corners with two equivalent S(8)MgMnW2 trigonal pyramids, and  an edgeedge with one S(7)MgMn2W tetrahedra. In the fifth S site, S(5) is bonded to one Mg(1), one W(1), one W(2), and one Mn(1) atom to form distorted SMgMnW2 trigonal pyramids that share corners with two equivalent S(4)MgMn2W tetrahedra, corners with two equivalent S(7)MgMn2W tetrahedra,  a cornercorner with one S(8)MgMnW2 trigonal pyramid, and  an edgeedge with one S(8)MgMnW2 trigonal pyramid. In the sixth S site, S(6) is bonded in a distorted rectangular see-saw-like geometry to one Mg(1), one W(1), one Mn(1), and one Mn(2) atom. In the seventh S site, S(7) is bonded to one Mg(2), one W(2), one Mn(1), and one Mn(2) atom to form distorted SMgMn2W tetrahedra that share  a cornercorner with one S(4)MgMn2W tetrahedra, corners with two equivalent S(5)MgMnW2 trigonal pyramids, corners with two equivalent S(8)MgMnW2 trigonal pyramids, and  an edgeedge with one S(4)MgMn2W tetrahedra. In the eighth S site, S(8) is bonded to one Mg(1), one W(1), one W(2), and one Mn(2) atom to form distorted SMgMnW2 trigonal pyramids that share corners with two equivalent S(4)MgMn2W tetrahedra, corners with two equivalent S(7)MgMn2W tetrahedra,  a cornercorner with one S(5)MgMnW2 trigonal pyramid, and  an edgeedge with one S(5)MgMnW2 trigonal pyramid.