The crystal structure described by Mg14CrBiO16 is Caswellsilverite-derived structured and crystallizes in the orthorhombic Pmmm space group. There are eight inequivalent Mg sites. In the first Mg site, Mg(1) is bonded to two equivalent O(1), two equivalent O(6), and two equivalent O(9) atoms to form MgO6 octahedra that share corners with two equivalent Mg(1)O6 octahedra, corners with two equivalent Mg(2)O6 octahedra, corners with two equivalent Cr(1)O6 octahedra, edges with four equivalent Mg(4)O6 octahedra, edges with four equivalent Mg(5)O6 octahedra, and edges with four equivalent Mg(7)O6 octahedra. The corner-sharing octahedra are not tilted. In the second Mg site, Mg(2) is bonded to two equivalent O(2), two equivalent O(7), and two equivalent O(9) atoms to form MgO6 octahedra that share corners with two equivalent Mg(1)O6 octahedra; corners with two equivalent Mg(2)O6 octahedra; corners with two equivalent Bi(1)O6 octahedra; edges with four equivalent Mg(4)O6 octahedra; edges with four Mg(6,6)O6 octahedra; and edges with four equivalent Mg(7)O6 octahedra. The corner-sharing octahedra are not tilted. In the third Mg site, Mg(3) is bonded to one O(4), one O(5), two equivalent O(3), and two equivalent O(8) atoms to form MgO6 octahedra that share corners with two equivalent Mg(4)O6 octahedra; corners with four equivalent Mg(3)O6 octahedra; edges with two equivalent Mg(5)O6 octahedra; edges with two Mg(6,6)O6 octahedra; edges with two equivalent Cr(1)O6 octahedra; edges with two equivalent Bi(1)O6 octahedra; and edges with four equivalent Mg(7)O6 octahedra. The corner-sharing octahedral tilt angles range from 0-5°. In the fourth Mg site, Mg(4) is bonded to one O(6), one O(7), two equivalent O(3), and two equivalent O(9) atoms to form a mixture of edge and corner-sharing MgO6 octahedra. The corner-sharing octahedral tilt angles range from 0-5°. In the fifth Mg site, Mg(5) is bonded to one O(4), one O(6), two equivalent O(1), and two equivalent O(3) atoms to form MgO6 octahedra that share corners with two equivalent Mg(6)O6 octahedra, corners with four equivalent Mg(5)O6 octahedra, edges with two equivalent Mg(1)O6 octahedra, edges with two equivalent Mg(3)O6 octahedra, edges with two equivalent Mg(4)O6 octahedra, edges with two equivalent Cr(1)O6 octahedra, and edges with four equivalent Mg(7)O6 octahedra. The corner-sharing octahedral tilt angles range from 0-7°. In the sixth Mg site, Mg(6) is bonded to one O(5), one O(7), two equivalent O(2), and two equivalent O(3) atoms to form MgO6 octahedra that share corners with two equivalent Mg(5)O6 octahedra; corners with four Mg(6,6)O6 octahedra; edges with two equivalent Mg(2)O6 octahedra; edges with two equivalent Mg(3)O6 octahedra; edges with two equivalent Mg(4)O6 octahedra; edges with two equivalent Bi(1)O6 octahedra; and edges with four equivalent Mg(7)O6 octahedra. The corner-sharing octahedral tilt angles range from 0-5°. In the seventh Mg site, Mg(6) is bonded to one O(5), one O(7), two equivalent O(2), and two equivalent O(3) atoms to form MgO6 octahedra that share corners with two equivalent Mg(5)O6 octahedra; corners with four Mg(6,6)O6 octahedra; edges with two equivalent Mg(2)O6 octahedra; edges with two equivalent Mg(3)O6 octahedra; edges with two equivalent Mg(4)O6 octahedra; edges with two equivalent Bi(1)O6 octahedra; and edges with four equivalent Mg(7)O6 octahedra. The corner-sharing octahedral tilt angles range from 0-5°. In the eighth Mg site, Mg(7) is bonded to one O(1), one O(2), one O(8), one O(9), and two equivalent O(3) atoms to form MgO6 octahedra that share corners with six equivalent Mg(7)O6 octahedra,  an edgeedge with one Mg(1)O6 octahedra,  an edgeedge with one Mg(2)O6 octahedra,  an edgeedge with one Cr(1)O6 octahedra,  an edgeedge with one Bi(1)O6 octahedra, edges with two equivalent Mg(3)O6 octahedra, edges with two equivalent Mg(4)O6 octahedra, edges with two equivalent Mg(5)O6 octahedra, and edges with two equivalent Mg(6)O6 octahedra. The corner-sharing octahedral tilt angles range from 3-7°. Cr(1) is bonded to two equivalent O(1), two equivalent O(4), and two equivalent O(8) atoms to form CrO6 octahedra that share corners with two equivalent Mg(1)O6 octahedra, corners with two equivalent Cr(1)O6 octahedra, corners with two equivalent Bi(1)O6 octahedra, edges with four equivalent Mg(3)O6 octahedra, edges with four equivalent Mg(5)O6 octahedra, and edges with four equivalent Mg(7)O6 octahedra. The corner-sharing octahedra are not tilted. Bi(1) is bonded to two equivalent O(2), two equivalent O(5), and two equivalent O(8) atoms to form BiO6 octahedra that share corners with two equivalent Mg(2)O6 octahedra; corners with two equivalent Cr(1)O6 octahedra; corners with two equivalent Bi(1)O6 octahedra; edges with four equivalent Mg(3)O6 octahedra; edges with four Mg(6,6)O6 octahedra; and edges with four equivalent Mg(7)O6 octahedra. The corner-sharing octahedra are not tilted. There are nine inequivalent O sites. In the first O site, O(1) is bonded to one Mg(1), two equivalent Mg(5), two equivalent Mg(7), and one Cr(1) atom to form OMg5Cr octahedra that share corners with two equivalent O(2)Mg5Bi octahedra, corners with four equivalent O(1)Mg5Cr octahedra, edges with two equivalent O(4)Mg4Cr2 octahedra, edges with two equivalent O(8)Mg4CrBi octahedra, edges with two equivalent O(6)Mg6 octahedra, edges with two equivalent O(9)Mg6 octahedra, and edges with four equivalent O(3)Mg6 octahedra. The corner-sharing octahedral tilt angles range from 0-7°. In the second O site, O(2) is bonded to one Mg(2), two equivalent Mg(6), two equivalent Mg(7), and one Bi(1) atom to form OMg5Bi octahedra that share corners with two equivalent O(1)Mg5Cr octahedra, corners with four equivalent O(2)Mg5Bi octahedra, edges with two equivalent O(5)Mg4Bi2 octahedra, edges with two equivalent O(8)Mg4CrBi octahedra, edges with two equivalent O(7)Mg6 octahedra, edges with two equivalent O(9)Mg6 octahedra, and edges with four equivalent O(3)Mg6 octahedra. The corner-sharing octahedral tilt angles range from 0-5°. In the third O site, O(3) is bonded to one Mg(3), one Mg(4), one Mg(5), one Mg(6), and two equivalent Mg(7) atoms to form OMg6 octahedra that share corners with six equivalent O(3)Mg6 octahedra,  an edgeedge with one O(5)Mg4Bi2 octahedra,  an edgeedge with one O(4)Mg4Cr2 octahedra,  an edgeedge with one O(6)Mg6 octahedra,  an edgeedge with one O(7)Mg6 octahedra, edges with two equivalent O(8)Mg4CrBi octahedra, edges with two equivalent O(2)Mg5Bi octahedra, edges with two equivalent O(1)Mg5Cr octahedra, and edges with two equivalent O(9)Mg6 octahedra. The corner-sharing octahedral tilt angles range from 2-8°. In the fourth O site, O(4) is bonded to two equivalent Mg(3), two equivalent Mg(5), and two equivalent Cr(1) atoms to form OMg4Cr2 octahedra that share corners with two equivalent O(5)Mg4Bi2 octahedra, corners with two equivalent O(4)Mg4Cr2 octahedra, corners with two equivalent O(6)Mg6 octahedra, edges with four equivalent O(8)Mg4CrBi octahedra, edges with four equivalent O(1)Mg5Cr octahedra, and edges with four equivalent O(3)Mg6 octahedra. The corner-sharing octahedra are not tilted. In the fifth O site, O(5) is bonded to two equivalent Mg(3); two Mg(6,6); and two equivalent Bi(1) atoms to form OMg4Bi2 octahedra that share corners with two equivalent O(5)Mg4Bi2 octahedra, corners with two equivalent O(4)Mg4Cr2 octahedra, corners with two equivalent O(7)Mg6 octahedra, edges with four equivalent O(8)Mg4CrBi octahedra, edges with four equivalent O(2)Mg5Bi octahedra, and edges with four equivalent O(3)Mg6 octahedra. The corner-sharing octahedra are not tilted. In the sixth O site, O(6) is bonded to two equivalent Mg(1), two equivalent Mg(4), and two equivalent Mg(5) atoms to form OMg6 octahedra that share corners with two equivalent O(4)Mg4Cr2 octahedra, corners with two equivalent O(6)Mg6 octahedra, corners with two equivalent O(7)Mg6 octahedra, edges with four equivalent O(1)Mg5Cr octahedra, edges with four equivalent O(3)Mg6 octahedra, and edges with four equivalent O(9)Mg6 octahedra. The corner-sharing octahedra are not tilted. In the seventh O site, O(7) is bonded to two equivalent Mg(2); two equivalent Mg(4); and two Mg(6,6) atoms to form OMg6 octahedra that share corners with two equivalent O(5)Mg4Bi2 octahedra, corners with two equivalent O(6)Mg6 octahedra, corners with two equivalent O(7)Mg6 octahedra, edges with four equivalent O(2)Mg5Bi octahedra, edges with four equivalent O(3)Mg6 octahedra, and edges with four equivalent O(9)Mg6 octahedra. The corner-sharing octahedra are not tilted. In the eighth O site, O(8) is bonded to two equivalent Mg(3), two equivalent Mg(7), one Cr(1), and one Bi(1) atom to form OMg4CrBi octahedra that share corners with two equivalent O(9)Mg6 octahedra, corners with four equivalent O(8)Mg4CrBi octahedra, edges with two equivalent O(5)Mg4Bi2 octahedra, edges with two equivalent O(4)Mg4Cr2 octahedra, edges with two equivalent O(2)Mg5Bi octahedra, edges with two equivalent O(1)Mg5Cr octahedra, and edges with four equivalent O(3)Mg6 octahedra. The corner-sharing octahedral tilt angles range from 0-1°. In the ninth O site, O(9) is bonded to one Mg(1), one Mg(2), two equivalent Mg(4), and two equivalent Mg(7) atoms to form OMg6 octahedra that share corners with two equivalent O(8)Mg4CrBi octahedra, corners with four equivalent O(9)Mg6 octahedra, edges with two equivalent O(2)Mg5Bi octahedra, edges with two equivalent O(1)Mg5Cr octahedra, edges with two equivalent O(6)Mg6 octahedra, edges with two equivalent O(7)Mg6 octahedra, and edges with four equivalent O(3)Mg6 octahedra. The corner-sharing octahedral tilt angles range from 0-2°. is represented by the CIF file [CIF]
data_Mg14CrBiO16
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.818
_cell_length_b   8.764
_cell_length_c   4.398
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   339.873
_cell_formula_units_Z   1
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  0.500  0.000  0.000  1.0
  Mg  Mg1  1  0.500  0.500  0.000  1.0
  Mg  Mg2  1  0.000  0.234  0.500  1.0
  Mg  Mg3  1  0.000  0.766  0.500  1.0
  Mg  Mg4  1  0.500  0.247  0.500  1.0
  Mg  Mg5  1  0.500  0.753  0.500  1.0
  Mg  Mg6  1  0.255  0.000  0.500  1.0
  Mg  Mg7  1  0.266  0.500  0.500  1.0
  Mg  Mg8  1  0.745  0.000  0.500  1.0
  Mg  Mg9  1  0.734  0.500  0.500  1.0
  Mg  Mg10  1  0.259  0.240  0.000  1.0
  Mg  Mg11  1  0.259  0.760  0.000  1.0
  Mg  Mg12  1  0.741  0.240  0.000  1.0
  Mg  Mg13  1  0.741  0.760  0.000  1.0
  Cr  Cr14  1  0.000  0.000  0.000  1.0
  Bi  Bi15  1  0.000  0.500  0.000  1.0
  O  O16  1  0.270  0.000  0.000  1.0
  O  O17  1  0.269  0.500  0.000  1.0
  O  O18  1  0.730  0.000  0.000  1.0
  O  O19  1  0.731  0.500  0.000  1.0
  O  O20  1  0.249  0.251  0.500  1.0
  O  O21  1  0.249  0.749  0.500  1.0
  O  O22  1  0.751  0.251  0.500  1.0
  O  O23  1  0.751  0.749  0.500  1.0
  O  O24  1  0.000  0.000  0.500  1.0
  O  O25  1  0.000  0.500  0.500  1.0
  O  O26  1  0.500  0.000  0.500  1.0
  O  O27  1  0.500  0.500  0.500  1.0
  O  O28  1  0.000  0.233  0.000  1.0
  O  O29  1  0.000  0.767  0.000  1.0
  O  O30  1  0.500  0.251  0.000  1.0
  O  O31  1  0.500  0.749  0.000  1.0
[/CIF]
.
The crystal structure described by Mg14CrBiO16 is Caswellsilverite-derived structured and crystallizes in the orthorhombic Pmmm space group. There are eight inequivalent Mg sites. In the first Mg site, Mg(1) is bonded to two equivalent O(1), two equivalent O(6), and two equivalent O(9) atoms to form MgO6 octahedra that share corners with two equivalent Mg(1)O6 octahedra, corners with two equivalent Mg(2)O6 octahedra, corners with two equivalent Cr(1)O6 octahedra, edges with four equivalent Mg(4)O6 octahedra, edges with four equivalent Mg(5)O6 octahedra, and edges with four equivalent Mg(7)O6 octahedra. The corner-sharing octahedra are not tilted. In the second Mg site, Mg(2) is bonded to two equivalent O(2), two equivalent O(7), and two equivalent O(9) atoms to form MgO6 octahedra that share corners with two equivalent Mg(1)O6 octahedra; corners with two equivalent Mg(2)O6 octahedra; corners with two equivalent Bi(1)O6 octahedra; edges with four equivalent Mg(4)O6 octahedra; edges with four Mg(6,6)O6 octahedra; and edges with four equivalent Mg(7)O6 octahedra. The corner-sharing octahedra are not tilted. In the third Mg site, Mg(3) is bonded to one O(4), one O(5), two equivalent O(3), and two equivalent O(8) atoms to form MgO6 octahedra that share corners with two equivalent Mg(4)O6 octahedra; corners with four equivalent Mg(3)O6 octahedra; edges with two equivalent Mg(5)O6 octahedra; edges with two Mg(6,6)O6 octahedra; edges with two equivalent Cr(1)O6 octahedra; edges with two equivalent Bi(1)O6 octahedra; and edges with four equivalent Mg(7)O6 octahedra. The corner-sharing octahedral tilt angles range from 0-5°. In the fourth Mg site, Mg(4) is bonded to one O(6), one O(7), two equivalent O(3), and two equivalent O(9) atoms to form a mixture of edge and corner-sharing MgO6 octahedra. The corner-sharing octahedral tilt angles range from 0-5°. In the fifth Mg site, Mg(5) is bonded to one O(4), one O(6), two equivalent O(1), and two equivalent O(3) atoms to form MgO6 octahedra that share corners with two equivalent Mg(6)O6 octahedra, corners with four equivalent Mg(5)O6 octahedra, edges with two equivalent Mg(1)O6 octahedra, edges with two equivalent Mg(3)O6 octahedra, edges with two equivalent Mg(4)O6 octahedra, edges with two equivalent Cr(1)O6 octahedra, and edges with four equivalent Mg(7)O6 octahedra. The corner-sharing octahedral tilt angles range from 0-7°. In the sixth Mg site, Mg(6) is bonded to one O(5), one O(7), two equivalent O(2), and two equivalent O(3) atoms to form MgO6 octahedra that share corners with two equivalent Mg(5)O6 octahedra; corners with four Mg(6,6)O6 octahedra; edges with two equivalent Mg(2)O6 octahedra; edges with two equivalent Mg(3)O6 octahedra; edges with two equivalent Mg(4)O6 octahedra; edges with two equivalent Bi(1)O6 octahedra; and edges with four equivalent Mg(7)O6 octahedra. The corner-sharing octahedral tilt angles range from 0-5°. In the seventh Mg site, Mg(6) is bonded to one O(5), one O(7), two equivalent O(2), and two equivalent O(3) atoms to form MgO6 octahedra that share corners with two equivalent Mg(5)O6 octahedra; corners with four Mg(6,6)O6 octahedra; edges with two equivalent Mg(2)O6 octahedra; edges with two equivalent Mg(3)O6 octahedra; edges with two equivalent Mg(4)O6 octahedra; edges with two equivalent Bi(1)O6 octahedra; and edges with four equivalent Mg(7)O6 octahedra. The corner-sharing octahedral tilt angles range from 0-5°. In the eighth Mg site, Mg(7) is bonded to one O(1), one O(2), one O(8), one O(9), and two equivalent O(3) atoms to form MgO6 octahedra that share corners with six equivalent Mg(7)O6 octahedra,  an edgeedge with one Mg(1)O6 octahedra,  an edgeedge with one Mg(2)O6 octahedra,  an edgeedge with one Cr(1)O6 octahedra,  an edgeedge with one Bi(1)O6 octahedra, edges with two equivalent Mg(3)O6 octahedra, edges with two equivalent Mg(4)O6 octahedra, edges with two equivalent Mg(5)O6 octahedra, and edges with two equivalent Mg(6)O6 octahedra. The corner-sharing octahedral tilt angles range from 3-7°. Cr(1) is bonded to two equivalent O(1), two equivalent O(4), and two equivalent O(8) atoms to form CrO6 octahedra that share corners with two equivalent Mg(1)O6 octahedra, corners with two equivalent Cr(1)O6 octahedra, corners with two equivalent Bi(1)O6 octahedra, edges with four equivalent Mg(3)O6 octahedra, edges with four equivalent Mg(5)O6 octahedra, and edges with four equivalent Mg(7)O6 octahedra. The corner-sharing octahedra are not tilted. Bi(1) is bonded to two equivalent O(2), two equivalent O(5), and two equivalent O(8) atoms to form BiO6 octahedra that share corners with two equivalent Mg(2)O6 octahedra; corners with two equivalent Cr(1)O6 octahedra; corners with two equivalent Bi(1)O6 octahedra; edges with four equivalent Mg(3)O6 octahedra; edges with four Mg(6,6)O6 octahedra; and edges with four equivalent Mg(7)O6 octahedra. The corner-sharing octahedra are not tilted. There are nine inequivalent O sites. In the first O site, O(1) is bonded to one Mg(1), two equivalent Mg(5), two equivalent Mg(7), and one Cr(1) atom to form OMg5Cr octahedra that share corners with two equivalent O(2)Mg5Bi octahedra, corners with four equivalent O(1)Mg5Cr octahedra, edges with two equivalent O(4)Mg4Cr2 octahedra, edges with two equivalent O(8)Mg4CrBi octahedra, edges with two equivalent O(6)Mg6 octahedra, edges with two equivalent O(9)Mg6 octahedra, and edges with four equivalent O(3)Mg6 octahedra. The corner-sharing octahedral tilt angles range from 0-7°. In the second O site, O(2) is bonded to one Mg(2), two equivalent Mg(6), two equivalent Mg(7), and one Bi(1) atom to form OMg5Bi octahedra that share corners with two equivalent O(1)Mg5Cr octahedra, corners with four equivalent O(2)Mg5Bi octahedra, edges with two equivalent O(5)Mg4Bi2 octahedra, edges with two equivalent O(8)Mg4CrBi octahedra, edges with two equivalent O(7)Mg6 octahedra, edges with two equivalent O(9)Mg6 octahedra, and edges with four equivalent O(3)Mg6 octahedra. The corner-sharing octahedral tilt angles range from 0-5°. In the third O site, O(3) is bonded to one Mg(3), one Mg(4), one Mg(5), one Mg(6), and two equivalent Mg(7) atoms to form OMg6 octahedra that share corners with six equivalent O(3)Mg6 octahedra,  an edgeedge with one O(5)Mg4Bi2 octahedra,  an edgeedge with one O(4)Mg4Cr2 octahedra,  an edgeedge with one O(6)Mg6 octahedra,  an edgeedge with one O(7)Mg6 octahedra, edges with two equivalent O(8)Mg4CrBi octahedra, edges with two equivalent O(2)Mg5Bi octahedra, edges with two equivalent O(1)Mg5Cr octahedra, and edges with two equivalent O(9)Mg6 octahedra. The corner-sharing octahedral tilt angles range from 2-8°. In the fourth O site, O(4) is bonded to two equivalent Mg(3), two equivalent Mg(5), and two equivalent Cr(1) atoms to form OMg4Cr2 octahedra that share corners with two equivalent O(5)Mg4Bi2 octahedra, corners with two equivalent O(4)Mg4Cr2 octahedra, corners with two equivalent O(6)Mg6 octahedra, edges with four equivalent O(8)Mg4CrBi octahedra, edges with four equivalent O(1)Mg5Cr octahedra, and edges with four equivalent O(3)Mg6 octahedra. The corner-sharing octahedra are not tilted. In the fifth O site, O(5) is bonded to two equivalent Mg(3); two Mg(6,6); and two equivalent Bi(1) atoms to form OMg4Bi2 octahedra that share corners with two equivalent O(5)Mg4Bi2 octahedra, corners with two equivalent O(4)Mg4Cr2 octahedra, corners with two equivalent O(7)Mg6 octahedra, edges with four equivalent O(8)Mg4CrBi octahedra, edges with four equivalent O(2)Mg5Bi octahedra, and edges with four equivalent O(3)Mg6 octahedra. The corner-sharing octahedra are not tilted. In the sixth O site, O(6) is bonded to two equivalent Mg(1), two equivalent Mg(4), and two equivalent Mg(5) atoms to form OMg6 octahedra that share corners with two equivalent O(4)Mg4Cr2 octahedra, corners with two equivalent O(6)Mg6 octahedra, corners with two equivalent O(7)Mg6 octahedra, edges with four equivalent O(1)Mg5Cr octahedra, edges with four equivalent O(3)Mg6 octahedra, and edges with four equivalent O(9)Mg6 octahedra. The corner-sharing octahedra are not tilted. In the seventh O site, O(7) is bonded to two equivalent Mg(2); two equivalent Mg(4); and two Mg(6,6) atoms to form OMg6 octahedra that share corners with two equivalent O(5)Mg4Bi2 octahedra, corners with two equivalent O(6)Mg6 octahedra, corners with two equivalent O(7)Mg6 octahedra, edges with four equivalent O(2)Mg5Bi octahedra, edges with four equivalent O(3)Mg6 octahedra, and edges with four equivalent O(9)Mg6 octahedra. The corner-sharing octahedra are not tilted. In the eighth O site, O(8) is bonded to two equivalent Mg(3), two equivalent Mg(7), one Cr(1), and one Bi(1) atom to form OMg4CrBi octahedra that share corners with two equivalent O(9)Mg6 octahedra, corners with four equivalent O(8)Mg4CrBi octahedra, edges with two equivalent O(5)Mg4Bi2 octahedra, edges with two equivalent O(4)Mg4Cr2 octahedra, edges with two equivalent O(2)Mg5Bi octahedra, edges with two equivalent O(1)Mg5Cr octahedra, and edges with four equivalent O(3)Mg6 octahedra. The corner-sharing octahedral tilt angles range from 0-1°. In the ninth O site, O(9) is bonded to one Mg(1), one Mg(2), two equivalent Mg(4), and two equivalent Mg(7) atoms to form OMg6 octahedra that share corners with two equivalent O(8)Mg4CrBi octahedra, corners with four equivalent O(9)Mg6 octahedra, edges with two equivalent O(2)Mg5Bi octahedra, edges with two equivalent O(1)Mg5Cr octahedra, edges with two equivalent O(6)Mg6 octahedra, edges with two equivalent O(7)Mg6 octahedra, and edges with four equivalent O(3)Mg6 octahedra. The corner-sharing octahedral tilt angles range from 0-2°. is represented by the CIF file [CIF]
data_Mg14CrBiO16
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.818
_cell_length_b   8.764
_cell_length_c   4.398
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   339.873
_cell_formula_units_Z   1
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  0.500  0.000  0.000  1.0
  Mg  Mg1  1  0.500  0.500  0.000  1.0
  Mg  Mg2  1  0.000  0.234  0.500  1.0
  Mg  Mg3  1  0.000  0.766  0.500  1.0
  Mg  Mg4  1  0.500  0.247  0.500  1.0
  Mg  Mg5  1  0.500  0.753  0.500  1.0
  Mg  Mg6  1  0.255  0.000  0.500  1.0
  Mg  Mg7  1  0.266  0.500  0.500  1.0
  Mg  Mg8  1  0.745  0.000  0.500  1.0
  Mg  Mg9  1  0.734  0.500  0.500  1.0
  Mg  Mg10  1  0.259  0.240  0.000  1.0
  Mg  Mg11  1  0.259  0.760  0.000  1.0
  Mg  Mg12  1  0.741  0.240  0.000  1.0
  Mg  Mg13  1  0.741  0.760  0.000  1.0
  Cr  Cr14  1  0.000  0.000  0.000  1.0
  Bi  Bi15  1  0.000  0.500  0.000  1.0
  O  O16  1  0.270  0.000  0.000  1.0
  O  O17  1  0.269  0.500  0.000  1.0
  O  O18  1  0.730  0.000  0.000  1.0
  O  O19  1  0.731  0.500  0.000  1.0
  O  O20  1  0.249  0.251  0.500  1.0
  O  O21  1  0.249  0.749  0.500  1.0
  O  O22  1  0.751  0.251  0.500  1.0
  O  O23  1  0.751  0.749  0.500  1.0
  O  O24  1  0.000  0.000  0.500  1.0
  O  O25  1  0.000  0.500  0.500  1.0
  O  O26  1  0.500  0.000  0.500  1.0
  O  O27  1  0.500  0.500  0.500  1.0
  O  O28  1  0.000  0.233  0.000  1.0
  O  O29  1  0.000  0.767  0.000  1.0
  O  O30  1  0.500  0.251  0.000  1.0
  O  O31  1  0.500  0.749  0.000  1.0
[/CIF]
.