The material structure described by Mg14YFeO16 is alpha Po-derived structured and crystallizes in the orthorhombic Pmmm space group. There are seven 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 Y(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 O(2,2); 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 Fe(1)O6 octahedra, edges with four equivalent Mg(4)O6 octahedra, edges with four equivalent Mg(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 equivalent Mg(6)O6 octahedra, edges with two equivalent Y(1)O6 octahedra, edges with two equivalent Fe(1)O6 octahedra, and edges with four equivalent Mg(7)O6 octahedra. The corner-sharing octahedral tilt angles range from 0-6°. 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 corner and edge-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 Y(1)O6 octahedra, and edges with four equivalent Mg(7)O6 octahedra. The corner-sharing octahedral tilt angles range from 0-4°. 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 equivalent Mg(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 Fe(1)O6 octahedra, and edges with four equivalent Mg(7)O6 octahedra. The corner-sharing octahedral tilt angles range from 0-7°. In the seventh 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 Y(1)O6 octahedra,  an edgeedge with one Fe(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 2-6°. Y(1) is bonded to two equivalent O(1), two equivalent O(4), and two equivalent O(8) atoms to form YO6 octahedra that share corners with two equivalent Mg(1)O6 octahedra, corners with two equivalent Y(1)O6 octahedra, corners with two equivalent Fe(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. Fe(1) is bonded to two O(2,2); two equivalent O(5); and two equivalent O(8) atoms to form FeO6 octahedra that share corners with two equivalent Mg(2)O6 octahedra, corners with two equivalent Y(1)O6 octahedra, corners with two equivalent Fe(1)O6 octahedra, edges with four equivalent Mg(3)O6 octahedra, edges with four equivalent Mg(6)O6 octahedra, and edges with four equivalent Mg(7)O6 octahedra. The corner-sharing octahedra are not tilted. There are ten 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 Y(1) atom to form OYMg5 octahedra that share corners with two equivalent O(2)Mg5Fe octahedra, corners with four equivalent O(1)YMg5 octahedra, edges with two equivalent O(6)Mg6 octahedra, edges with two equivalent O(9)Mg6 octahedra, edges with two equivalent O(4)Y2Mg4 octahedra, edges with two equivalent O(8)YMg4Fe octahedra, and edges with four equivalent O(3)Mg6 octahedra. The corner-sharing octahedral tilt angles range from 0-4°. In the second O site, O(2) is bonded to one Mg(2), two equivalent Mg(6), two equivalent Mg(7), and one Fe(1) atom to form OMg5Fe octahedra that share corners with two equivalent O(1)YMg5 octahedra; corners with four O(2,2)Mg5Fe octahedra; edges with two equivalent O(5)Mg4Fe2 octahedra; edges with two equivalent O(7)Mg6 octahedra; edges with two equivalent O(9)Mg6 octahedra; edges with two equivalent O(8)YMg4Fe octahedra; and edges with four equivalent O(3)Mg6 octahedra. The corner-sharing octahedral tilt angles range from 0-7°. In the third O site, O(2) is bonded to one Mg(2), two equivalent Mg(6), two equivalent Mg(7), and one Fe(1) atom to form OMg5Fe octahedra that share corners with two equivalent O(1)YMg5 octahedra; corners with four O(2,2)Mg5Fe octahedra; edges with two equivalent O(5)Mg4Fe2 octahedra; edges with two equivalent O(7)Mg6 octahedra; edges with two equivalent O(9)Mg6 octahedra; edges with two equivalent O(8)YMg4Fe octahedra; and edges with four equivalent O(3)Mg6 octahedra. The corner-sharing octahedral tilt angles range from 0-7°. In the fourth 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)Mg4Fe2 octahedra,  an edgeedge with one O(6)Mg6 octahedra,  an edgeedge with one O(7)Mg6 octahedra,  an edgeedge with one O(4)Y2Mg4 octahedra, edges with two equivalent O(2)Mg5Fe octahedra, edges with two equivalent O(9)Mg6 octahedra, edges with two equivalent O(8)YMg4Fe octahedra, and edges with two equivalent O(1)YMg5 octahedra. The corner-sharing octahedral tilt angles range from 1-7°. In the fifth O site, O(4) is bonded to two equivalent Mg(3), two equivalent Mg(5), and two equivalent Y(1) atoms to form OY2Mg4 octahedra that share corners with two equivalent O(5)Mg4Fe2 octahedra, corners with two equivalent O(6)Mg6 octahedra, corners with two equivalent O(4)Y2Mg4 octahedra, edges with four equivalent O(3)Mg6 octahedra, edges with four equivalent O(8)YMg4Fe octahedra, and edges with four equivalent O(1)YMg5 octahedra. The corner-sharing octahedra are not tilted. In the sixth O site, O(5) is bonded to two equivalent Mg(3), two equivalent Mg(6), and two equivalent Fe(1) atoms to form OMg4Fe2 octahedra that share corners with two equivalent O(5)Mg4Fe2 octahedra; corners with two equivalent O(7)Mg6 octahedra; corners with two equivalent O(4)Y2Mg4 octahedra; edges with four O(2,2)Mg5Fe octahedra; edges with four equivalent O(3)Mg6 octahedra; and edges with four equivalent O(8)YMg4Fe octahedra. The corner-sharing octahedra are not tilted. In the seventh 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(6)Mg6 octahedra, corners with two equivalent O(7)Mg6 octahedra, corners with two equivalent O(4)Y2Mg4 octahedra, edges with four equivalent O(3)Mg6 octahedra, edges with four equivalent O(9)Mg6 octahedra, and edges with four equivalent O(1)YMg5 octahedra. The corner-sharing octahedra are not tilted. In the eighth O site, O(7) is bonded to two equivalent Mg(2), two equivalent Mg(4), and two equivalent Mg(6) atoms to form OMg6 octahedra that share corners with two equivalent O(5)Mg4Fe2 octahedra; corners with two equivalent O(6)Mg6 octahedra; corners with two equivalent O(7)Mg6 octahedra; edges with four O(2,2)Mg5Fe 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 ninth O site, O(8) is bonded to two equivalent Mg(3), two equivalent Mg(7), one Y(1), and one Fe(1) atom to form OYMg4Fe octahedra that share corners with two equivalent O(9)Mg6 octahedra; corners with four equivalent O(8)YMg4Fe octahedra; edges with two equivalent O(5)Mg4Fe2 octahedra; edges with two O(2,2)Mg5Fe octahedra; edges with two equivalent O(4)Y2Mg4 octahedra; edges with two equivalent O(1)YMg5 octahedra; and edges with four equivalent O(3)Mg6 octahedra. The corner-sharing octahedral tilt angles range from 0-6°. In the tenth 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)YMg4Fe octahedra; corners with four equivalent O(9)Mg6 octahedra; edges with two O(2,2)Mg5Fe octahedra; edges with two equivalent O(6)Mg6 octahedra; edges with two equivalent O(7)Mg6 octahedra; edges with two equivalent O(1)YMg5 octahedra; and edges with four equivalent O(3)Mg6 octahedra. The corner-sharing octahedral tilt angles range from 0-5°. is represented by the Crystallographic Information File (CIF) [CIF]
data_YMg14FeO16
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.343
_cell_length_b   8.692
_cell_length_c   8.706
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   328.678
_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
  Y  Y0  1  0.000  0.000  0.000  1.0
  Mg  Mg1  1  0.000  0.500  0.000  1.0
  Mg  Mg2  1  0.000  0.500  0.500  1.0
  Mg  Mg3  1  0.500  0.000  0.265  1.0
  Mg  Mg4  1  0.500  0.000  0.735  1.0
  Mg  Mg5  1  0.500  0.500  0.254  1.0
  Mg  Mg6  1  0.500  0.500  0.746  1.0
  Mg  Mg7  1  0.500  0.263  0.000  1.0
  Mg  Mg8  1  0.500  0.251  0.500  1.0
  Mg  Mg9  1  0.500  0.737  0.000  1.0
  Mg  Mg10  1  0.500  0.749  0.500  1.0
  Mg  Mg11  1  0.000  0.255  0.261  1.0
  Mg  Mg12  1  0.000  0.255  0.739  1.0
  Mg  Mg13  1  0.000  0.745  0.261  1.0
  Mg  Mg14  1  0.000  0.745  0.739  1.0
  Fe  Fe15  1  0.000  0.000  0.500  1.0
  O  O16  1  0.000  0.260  0.000  1.0
  O  O17  1  0.000  0.267  0.500  1.0
  O  O18  1  0.000  0.740  0.000  1.0
  O  O19  1  0.000  0.733  0.500  1.0
  O  O20  1  0.500  0.249  0.249  1.0
  O  O21  1  0.500  0.249  0.751  1.0
  O  O22  1  0.500  0.751  0.249  1.0
  O  O23  1  0.500  0.751  0.751  1.0
  O  O24  1  0.500  0.000  0.000  1.0
  O  O25  1  0.500  0.000  0.500  1.0
  O  O26  1  0.500  0.500  0.000  1.0
  O  O27  1  0.500  0.500  0.500  1.0
  O  O28  1  0.000  0.000  0.252  1.0
  O  O29  1  0.000  0.000  0.748  1.0
  O  O30  1  0.000  0.500  0.248  1.0
  O  O31  1  0.000  0.500  0.752  1.0
[/CIF]
.
The material structure described by Mg14YFeO16 is alpha Po-derived structured and crystallizes in the orthorhombic Pmmm space group. There are seven 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 Y(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 O(2,2); 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 Fe(1)O6 octahedra, edges with four equivalent Mg(4)O6 octahedra, edges with four equivalent Mg(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 equivalent Mg(6)O6 octahedra, edges with two equivalent Y(1)O6 octahedra, edges with two equivalent Fe(1)O6 octahedra, and edges with four equivalent Mg(7)O6 octahedra. The corner-sharing octahedral tilt angles range from 0-6°. 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 corner and edge-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 Y(1)O6 octahedra, and edges with four equivalent Mg(7)O6 octahedra. The corner-sharing octahedral tilt angles range from 0-4°. 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 equivalent Mg(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 Fe(1)O6 octahedra, and edges with four equivalent Mg(7)O6 octahedra. The corner-sharing octahedral tilt angles range from 0-7°. In the seventh 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 Y(1)O6 octahedra,  an edgeedge with one Fe(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 2-6°. Y(1) is bonded to two equivalent O(1), two equivalent O(4), and two equivalent O(8) atoms to form YO6 octahedra that share corners with two equivalent Mg(1)O6 octahedra, corners with two equivalent Y(1)O6 octahedra, corners with two equivalent Fe(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. Fe(1) is bonded to two O(2,2); two equivalent O(5); and two equivalent O(8) atoms to form FeO6 octahedra that share corners with two equivalent Mg(2)O6 octahedra, corners with two equivalent Y(1)O6 octahedra, corners with two equivalent Fe(1)O6 octahedra, edges with four equivalent Mg(3)O6 octahedra, edges with four equivalent Mg(6)O6 octahedra, and edges with four equivalent Mg(7)O6 octahedra. The corner-sharing octahedra are not tilted. There are ten 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 Y(1) atom to form OYMg5 octahedra that share corners with two equivalent O(2)Mg5Fe octahedra, corners with four equivalent O(1)YMg5 octahedra, edges with two equivalent O(6)Mg6 octahedra, edges with two equivalent O(9)Mg6 octahedra, edges with two equivalent O(4)Y2Mg4 octahedra, edges with two equivalent O(8)YMg4Fe octahedra, and edges with four equivalent O(3)Mg6 octahedra. The corner-sharing octahedral tilt angles range from 0-4°. In the second O site, O(2) is bonded to one Mg(2), two equivalent Mg(6), two equivalent Mg(7), and one Fe(1) atom to form OMg5Fe octahedra that share corners with two equivalent O(1)YMg5 octahedra; corners with four O(2,2)Mg5Fe octahedra; edges with two equivalent O(5)Mg4Fe2 octahedra; edges with two equivalent O(7)Mg6 octahedra; edges with two equivalent O(9)Mg6 octahedra; edges with two equivalent O(8)YMg4Fe octahedra; and edges with four equivalent O(3)Mg6 octahedra. The corner-sharing octahedral tilt angles range from 0-7°. In the third O site, O(2) is bonded to one Mg(2), two equivalent Mg(6), two equivalent Mg(7), and one Fe(1) atom to form OMg5Fe octahedra that share corners with two equivalent O(1)YMg5 octahedra; corners with four O(2,2)Mg5Fe octahedra; edges with two equivalent O(5)Mg4Fe2 octahedra; edges with two equivalent O(7)Mg6 octahedra; edges with two equivalent O(9)Mg6 octahedra; edges with two equivalent O(8)YMg4Fe octahedra; and edges with four equivalent O(3)Mg6 octahedra. The corner-sharing octahedral tilt angles range from 0-7°. In the fourth 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)Mg4Fe2 octahedra,  an edgeedge with one O(6)Mg6 octahedra,  an edgeedge with one O(7)Mg6 octahedra,  an edgeedge with one O(4)Y2Mg4 octahedra, edges with two equivalent O(2)Mg5Fe octahedra, edges with two equivalent O(9)Mg6 octahedra, edges with two equivalent O(8)YMg4Fe octahedra, and edges with two equivalent O(1)YMg5 octahedra. The corner-sharing octahedral tilt angles range from 1-7°. In the fifth O site, O(4) is bonded to two equivalent Mg(3), two equivalent Mg(5), and two equivalent Y(1) atoms to form OY2Mg4 octahedra that share corners with two equivalent O(5)Mg4Fe2 octahedra, corners with two equivalent O(6)Mg6 octahedra, corners with two equivalent O(4)Y2Mg4 octahedra, edges with four equivalent O(3)Mg6 octahedra, edges with four equivalent O(8)YMg4Fe octahedra, and edges with four equivalent O(1)YMg5 octahedra. The corner-sharing octahedra are not tilted. In the sixth O site, O(5) is bonded to two equivalent Mg(3), two equivalent Mg(6), and two equivalent Fe(1) atoms to form OMg4Fe2 octahedra that share corners with two equivalent O(5)Mg4Fe2 octahedra; corners with two equivalent O(7)Mg6 octahedra; corners with two equivalent O(4)Y2Mg4 octahedra; edges with four O(2,2)Mg5Fe octahedra; edges with four equivalent O(3)Mg6 octahedra; and edges with four equivalent O(8)YMg4Fe octahedra. The corner-sharing octahedra are not tilted. In the seventh 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(6)Mg6 octahedra, corners with two equivalent O(7)Mg6 octahedra, corners with two equivalent O(4)Y2Mg4 octahedra, edges with four equivalent O(3)Mg6 octahedra, edges with four equivalent O(9)Mg6 octahedra, and edges with four equivalent O(1)YMg5 octahedra. The corner-sharing octahedra are not tilted. In the eighth O site, O(7) is bonded to two equivalent Mg(2), two equivalent Mg(4), and two equivalent Mg(6) atoms to form OMg6 octahedra that share corners with two equivalent O(5)Mg4Fe2 octahedra; corners with two equivalent O(6)Mg6 octahedra; corners with two equivalent O(7)Mg6 octahedra; edges with four O(2,2)Mg5Fe 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 ninth O site, O(8) is bonded to two equivalent Mg(3), two equivalent Mg(7), one Y(1), and one Fe(1) atom to form OYMg4Fe octahedra that share corners with two equivalent O(9)Mg6 octahedra; corners with four equivalent O(8)YMg4Fe octahedra; edges with two equivalent O(5)Mg4Fe2 octahedra; edges with two O(2,2)Mg5Fe octahedra; edges with two equivalent O(4)Y2Mg4 octahedra; edges with two equivalent O(1)YMg5 octahedra; and edges with four equivalent O(3)Mg6 octahedra. The corner-sharing octahedral tilt angles range from 0-6°. In the tenth 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)YMg4Fe octahedra; corners with four equivalent O(9)Mg6 octahedra; edges with two O(2,2)Mg5Fe octahedra; edges with two equivalent O(6)Mg6 octahedra; edges with two equivalent O(7)Mg6 octahedra; edges with two equivalent O(1)YMg5 octahedra; and edges with four equivalent O(3)Mg6 octahedra. The corner-sharing octahedral tilt angles range from 0-5°. is represented by the Crystallographic Information File (CIF) [CIF]
data_YMg14FeO16
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.343
_cell_length_b   8.692
_cell_length_c   8.706
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   328.678
_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
  Y  Y0  1  0.000  0.000  0.000  1.0
  Mg  Mg1  1  0.000  0.500  0.000  1.0
  Mg  Mg2  1  0.000  0.500  0.500  1.0
  Mg  Mg3  1  0.500  0.000  0.265  1.0
  Mg  Mg4  1  0.500  0.000  0.735  1.0
  Mg  Mg5  1  0.500  0.500  0.254  1.0
  Mg  Mg6  1  0.500  0.500  0.746  1.0
  Mg  Mg7  1  0.500  0.263  0.000  1.0
  Mg  Mg8  1  0.500  0.251  0.500  1.0
  Mg  Mg9  1  0.500  0.737  0.000  1.0
  Mg  Mg10  1  0.500  0.749  0.500  1.0
  Mg  Mg11  1  0.000  0.255  0.261  1.0
  Mg  Mg12  1  0.000  0.255  0.739  1.0
  Mg  Mg13  1  0.000  0.745  0.261  1.0
  Mg  Mg14  1  0.000  0.745  0.739  1.0
  Fe  Fe15  1  0.000  0.000  0.500  1.0
  O  O16  1  0.000  0.260  0.000  1.0
  O  O17  1  0.000  0.267  0.500  1.0
  O  O18  1  0.000  0.740  0.000  1.0
  O  O19  1  0.000  0.733  0.500  1.0
  O  O20  1  0.500  0.249  0.249  1.0
  O  O21  1  0.500  0.249  0.751  1.0
  O  O22  1  0.500  0.751  0.249  1.0
  O  O23  1  0.500  0.751  0.751  1.0
  O  O24  1  0.500  0.000  0.000  1.0
  O  O25  1  0.500  0.000  0.500  1.0
  O  O26  1  0.500  0.500  0.000  1.0
  O  O27  1  0.500  0.500  0.500  1.0
  O  O28  1  0.000  0.000  0.252  1.0
  O  O29  1  0.000  0.000  0.748  1.0
  O  O30  1  0.000  0.500  0.248  1.0
  O  O31  1  0.000  0.500  0.752  1.0
[/CIF]
.