The structure described by MgFeCrO4 is Spinel-derived structured and crystallizes in the orthorhombic Imma space group. Mg(1) is bonded to two equivalent O(1) and two equivalent O(2) atoms to form MgO4 tetrahedra that share corners with six equivalent Cr(1)O6 octahedra and corners with six equivalent Fe(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 58-59°. Cr(1) is bonded to two equivalent O(2) and four equivalent O(1) atoms to form CrO6 octahedra that share corners with six equivalent Mg(1)O4 tetrahedra, edges with two equivalent Cr(1)O6 octahedra, and edges with four equivalent Fe(1)O6 octahedra. Fe(1) is bonded to two equivalent O(1) and four equivalent O(2) atoms to form FeO6 octahedra that share corners with six equivalent Mg(1)O4 tetrahedra, edges with two equivalent Fe(1)O6 octahedra, and edges with four equivalent Cr(1)O6 octahedra. There are two inequivalent O sites. In the first O site, O(1) is bonded to one Mg(1), two equivalent Cr(1), and one Fe(1) atom to form distorted OMgCr2Fe trigonal pyramids that share corners with six equivalent O(1)MgCr2Fe trigonal pyramids, corners with six equivalent O(2)MgCrFe2 trigonal pyramids,  an edgeedge with one O(1)MgCr2Fe trigonal pyramid, and edges with two equivalent O(2)MgCrFe2 trigonal pyramids. In the second O site, O(2) is bonded to one Mg(1), one Cr(1), and two equivalent Fe(1) atoms to form distorted OMgCrFe2 trigonal pyramids that share corners with six equivalent O(1)MgCr2Fe trigonal pyramids, corners with six equivalent O(2)MgCrFe2 trigonal pyramids,  an edgeedge with one O(2)MgCrFe2 trigonal pyramid, and edges with two equivalent O(1)MgCr2Fe trigonal pyramids. is represented by the CIF file [CIF]
data_MgCrFeO4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.029
_cell_length_b   6.029
_cell_length_c   6.029
_cell_angle_alpha   120.087
_cell_angle_beta   119.924
_cell_angle_gamma   89.990
_symmetry_Int_Tables_number   1
_cell_volume   154.981
_cell_formula_units_Z   2
loop_
 _symmetry_equiv_pos_site_id
 _symmetry_equiv_pos_as_xyz
  1  'x, y, z'
loop_
 _atom_site_type_symbol
 _atom_site_label
 _atom_site_symmetry_multiplicity
 _atom_site_fract_x
 _atom_site_fract_y
 _atom_site_fract_z
 _atom_site_occupancy
  Mg  Mg0  1  0.124  0.874  0.250  1.0
  Mg  Mg1  1  0.876  0.126  0.750  1.0
  Cr  Cr2  1  0.500  0.500  0.000  1.0
  Cr  Cr3  1  0.000  0.500  0.500  1.0
  Fe  Fe4  1  0.500  0.500  0.500  1.0
  Fe  Fe5  1  0.500  0.000  0.000  1.0
  O  O6  1  0.260  0.738  0.978  1.0
  O  O7  1  0.260  0.283  0.522  1.0
  O  O8  1  0.259  0.739  0.520  1.0
  O  O9  1  0.719  0.739  0.980  1.0
  O  O10  1  0.740  0.262  0.022  1.0
  O  O11  1  0.740  0.717  0.478  1.0
  O  O12  1  0.741  0.261  0.480  1.0
  O  O13  1  0.281  0.261  0.020  1.0
[/CIF]
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The structure described by MgFeCrO4 is Spinel-derived structured and crystallizes in the orthorhombic Imma space group. Mg(1) is bonded to two equivalent O(1) and two equivalent O(2) atoms to form MgO4 tetrahedra that share corners with six equivalent Cr(1)O6 octahedra and corners with six equivalent Fe(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 58-59°. Cr(1) is bonded to two equivalent O(2) and four equivalent O(1) atoms to form CrO6 octahedra that share corners with six equivalent Mg(1)O4 tetrahedra, edges with two equivalent Cr(1)O6 octahedra, and edges with four equivalent Fe(1)O6 octahedra. Fe(1) is bonded to two equivalent O(1) and four equivalent O(2) atoms to form FeO6 octahedra that share corners with six equivalent Mg(1)O4 tetrahedra, edges with two equivalent Fe(1)O6 octahedra, and edges with four equivalent Cr(1)O6 octahedra. There are two inequivalent O sites. In the first O site, O(1) is bonded to one Mg(1), two equivalent Cr(1), and one Fe(1) atom to form distorted OMgCr2Fe trigonal pyramids that share corners with six equivalent O(1)MgCr2Fe trigonal pyramids, corners with six equivalent O(2)MgCrFe2 trigonal pyramids,  an edgeedge with one O(1)MgCr2Fe trigonal pyramid, and edges with two equivalent O(2)MgCrFe2 trigonal pyramids. In the second O site, O(2) is bonded to one Mg(1), one Cr(1), and two equivalent Fe(1) atoms to form distorted OMgCrFe2 trigonal pyramids that share corners with six equivalent O(1)MgCr2Fe trigonal pyramids, corners with six equivalent O(2)MgCrFe2 trigonal pyramids,  an edgeedge with one O(2)MgCrFe2 trigonal pyramid, and edges with two equivalent O(1)MgCr2Fe trigonal pyramids. is represented by the CIF file [CIF]
data_MgCrFeO4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.029
_cell_length_b   6.029
_cell_length_c   6.029
_cell_angle_alpha   120.087
_cell_angle_beta   119.924
_cell_angle_gamma   89.990
_symmetry_Int_Tables_number   1
_cell_volume   154.981
_cell_formula_units_Z   2
loop_
 _symmetry_equiv_pos_site_id
 _symmetry_equiv_pos_as_xyz
  1  'x, y, z'
loop_
 _atom_site_type_symbol
 _atom_site_label
 _atom_site_symmetry_multiplicity
 _atom_site_fract_x
 _atom_site_fract_y
 _atom_site_fract_z
 _atom_site_occupancy
  Mg  Mg0  1  0.124  0.874  0.250  1.0
  Mg  Mg1  1  0.876  0.126  0.750  1.0
  Cr  Cr2  1  0.500  0.500  0.000  1.0
  Cr  Cr3  1  0.000  0.500  0.500  1.0
  Fe  Fe4  1  0.500  0.500  0.500  1.0
  Fe  Fe5  1  0.500  0.000  0.000  1.0
  O  O6  1  0.260  0.738  0.978  1.0
  O  O7  1  0.260  0.283  0.522  1.0
  O  O8  1  0.259  0.739  0.520  1.0
  O  O9  1  0.719  0.739  0.980  1.0
  O  O10  1  0.740  0.262  0.022  1.0
  O  O11  1  0.740  0.717  0.478  1.0
  O  O12  1  0.741  0.261  0.480  1.0
  O  O13  1  0.281  0.261  0.020  1.0
[/CIF]
.