Mn(Fe)2O3 is Caswellsilverite-like structured and crystallizes in the orthorhombic Immm space group. Mn(1) is bonded to two equivalent O(1) and four equivalent O(2) atoms to form MnO6 octahedra that share corners with two equivalent Mn(1)O6 octahedra, corners with four equivalent Fe(1)O6 octahedra, edges with two equivalent Mn(1)O6 octahedra, and edges with ten equivalent Fe(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 0-1°. Fe(1) is bonded to two equivalent O(1) and four equivalent O(2) atoms to form FeO6 octahedra that share corners with two equivalent Mn(1)O6 octahedra, corners with four equivalent Fe(1)O6 octahedra, edges with five equivalent Mn(1)O6 octahedra, and edges with seven equivalent Fe(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 0-2°. There are two inequivalent O sites. In the first O site, O(1) is bonded to two equivalent Mn(1) and four equivalent Fe(1) atoms to form a mixture of edge and corner-sharing OMn2Fe4 octahedra. The corner-sharing octahedra are not tilted. In the second O site, O(2) is bonded to two equivalent Mn(1) and four equivalent Fe(1) atoms to form a mixture of edge and corner-sharing OMn2Fe4 octahedra. The corner-sharing octahedral tilt angles range from 0-2°.
Mn(Fe)2O3 is Caswellsilverite-like structured and crystallizes in the orthorhombic Immm space group. Mn(1) is bonded to two equivalent O(1) and four equivalent O(2) atoms to form MnO6 octahedra that share corners with two equivalent Mn(1)O6 octahedra, corners with four equivalent Fe(1)O6 octahedra, edges with two equivalent Mn(1)O6 octahedra, and edges with ten equivalent Fe(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 0-1°. Both Mn(1)-O(1) bond lengths are 2.14 Å. All Mn(1)-O(2) bond lengths are 2.28 Å. Fe(1) is bonded to two equivalent O(1) and four equivalent O(2) atoms to form FeO6 octahedra that share corners with two equivalent Mn(1)O6 octahedra, corners with four equivalent Fe(1)O6 octahedra, edges with five equivalent Mn(1)O6 octahedra, and edges with seven equivalent Fe(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 0-2°. Both Fe(1)-O(1) bond lengths are 2.26 Å. There are two shorter (2.14 Å) and two longer (2.25 Å) Fe(1)-O(2) bond lengths. There are two inequivalent O sites. In the first O site, O(1) is bonded to two equivalent Mn(1) and four equivalent Fe(1) atoms to form a mixture of edge and corner-sharing OMn2Fe4 octahedra. The corner-sharing octahedra are not tilted. In the second O site, O(2) is bonded to two equivalent Mn(1) and four equivalent Fe(1) atoms to form a mixture of edge and corner-sharing OMn2Fe4 octahedra. The corner-sharing octahedral tilt angles range from 0-2°.