The structure described by Ca4FeGa3O10 crystallizes in the monoclinic P2_1/c space group. There are two inequivalent Ca sites. In the first Ca site, Ca(1) is bonded in a 8-coordinate geometry to one O(3), one O(5), two equivalent O(1), two equivalent O(2), and two equivalent O(4) atoms. In the second Ca site, Ca(2) is bonded in a 8-coordinate geometry to one O(3), one O(4), two equivalent O(1), two equivalent O(2), and two equivalent O(5) atoms. Fe(1) is bonded to two equivalent O(1), two equivalent O(2), and two equivalent O(5) atoms to form FeO6 octahedra that share corners with four equivalent Ga(2)O6 octahedra and corners with two equivalent Ga(1)O4 tetrahedra. The corner-sharing octahedral tilt angles are 16°. There are two inequivalent Ga sites. In the first Ga site, Ga(1) is bonded to one O(4), one O(5), and two equivalent O(3) atoms to form GaO4 tetrahedra that share  a cornercorner with one Fe(1)O6 octahedra,  a cornercorner with one Ga(2)O6 octahedra, and corners with two equivalent Ga(1)O4 tetrahedra. The corner-sharing octahedral tilt angles are 42°. In the second Ga site, Ga(2) is bonded to two equivalent O(1), two equivalent O(2), and two equivalent O(4) atoms to form GaO6 octahedra that share corners with four equivalent Fe(1)O6 octahedra and corners with two equivalent Ga(1)O4 tetrahedra. The corner-sharing octahedral tilt angles are 16°. There are five inequivalent O sites. In the first O site, O(1) is bonded in a 6-coordinate geometry to two equivalent Ca(1), two equivalent Ca(2), one Fe(1), and one Ga(2) atom. In the second O site, O(2) is bonded in a 6-coordinate geometry to two equivalent Ca(1), two equivalent Ca(2), one Fe(1), and one Ga(2) atom. In the third O site, O(3) is bonded to one Ca(1), one Ca(2), and two equivalent Ga(1) atoms to form distorted corner-sharing OCa2Ga2 tetrahedra. In the fourth O site, O(4) is bonded in a 4-coordinate geometry to one Ca(2), two equivalent Ca(1), one Ga(1), and one Ga(2) atom. In the fifth O site, O(5) is bonded in a 4-coordinate geometry to one Ca(1), two equivalent Ca(2), one Fe(1), and one Ga(1) atom. is represented by the CIF file [CIF]
data_Ca4Ga3FeO10
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.444
_cell_length_b   5.668
_cell_length_c   15.854
_cell_angle_alpha   69.056
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   456.893
_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
  Ca  Ca0  1  0.021  0.635  0.892  1.0
  Ca  Ca1  1  0.521  0.365  0.608  1.0
  Ca  Ca2  1  0.980  0.081  0.391  1.0
  Ca  Ca3  1  0.480  0.919  0.109  1.0
  Ca  Ca4  1  0.979  0.365  0.108  1.0
  Ca  Ca5  1  0.479  0.635  0.392  1.0
  Ca  Ca6  1  0.020  0.919  0.609  1.0
  Ca  Ca7  1  0.520  0.081  0.891  1.0
  Ga  Ga8  1  0.552  0.680  0.750  1.0
  Ga  Ga9  1  0.052  0.320  0.750  1.0
  Ga  Ga10  1  0.448  0.320  0.250  1.0
  Ga  Ga11  1  0.948  0.680  0.250  1.0
  Ga  Ga12  1  0.500  0.500  0.000  1.0
  Ga  Ga13  1  0.000  0.500  0.500  1.0
  Fe  Fe14  1  0.500  0.000  0.500  1.0
  Fe  Fe15  1  0.000  0.000  0.000  1.0
  O  O16  1  0.234  0.713  0.016  1.0
  O  O17  1  0.734  0.287  0.484  1.0
  O  O18  1  0.770  0.751  0.516  1.0
  O  O19  1  0.270  0.249  0.984  1.0
  O  O20  1  0.766  0.287  0.984  1.0
  O  O21  1  0.266  0.713  0.516  1.0
  O  O22  1  0.230  0.249  0.484  1.0
  O  O23  1  0.730  0.751  0.016  1.0
  O  O24  1  0.901  0.625  0.750  1.0
  O  O25  1  0.401  0.375  0.750  1.0
  O  O26  1  0.099  0.375  0.250  1.0
  O  O27  1  0.599  0.625  0.250  1.0
  O  O28  1  0.472  0.717  0.858  1.0
  O  O29  1  0.972  0.283  0.642  1.0
  O  O30  1  0.527  0.068  0.358  1.0
  O  O31  1  0.027  0.932  0.142  1.0
  O  O32  1  0.528  0.283  0.142  1.0
  O  O33  1  0.028  0.717  0.358  1.0
  O  O34  1  0.473  0.932  0.642  1.0
  O  O35  1  0.973  0.068  0.858  1.0
[/CIF]
.
The structure described by Ca4FeGa3O10 crystallizes in the monoclinic P2_1/c space group. There are two inequivalent Ca sites. In the first Ca site, Ca(1) is bonded in a 8-coordinate geometry to one O(3), one O(5), two equivalent O(1), two equivalent O(2), and two equivalent O(4) atoms. In the second Ca site, Ca(2) is bonded in a 8-coordinate geometry to one O(3), one O(4), two equivalent O(1), two equivalent O(2), and two equivalent O(5) atoms. Fe(1) is bonded to two equivalent O(1), two equivalent O(2), and two equivalent O(5) atoms to form FeO6 octahedra that share corners with four equivalent Ga(2)O6 octahedra and corners with two equivalent Ga(1)O4 tetrahedra. The corner-sharing octahedral tilt angles are 16°. There are two inequivalent Ga sites. In the first Ga site, Ga(1) is bonded to one O(4), one O(5), and two equivalent O(3) atoms to form GaO4 tetrahedra that share  a cornercorner with one Fe(1)O6 octahedra,  a cornercorner with one Ga(2)O6 octahedra, and corners with two equivalent Ga(1)O4 tetrahedra. The corner-sharing octahedral tilt angles are 42°. In the second Ga site, Ga(2) is bonded to two equivalent O(1), two equivalent O(2), and two equivalent O(4) atoms to form GaO6 octahedra that share corners with four equivalent Fe(1)O6 octahedra and corners with two equivalent Ga(1)O4 tetrahedra. The corner-sharing octahedral tilt angles are 16°. There are five inequivalent O sites. In the first O site, O(1) is bonded in a 6-coordinate geometry to two equivalent Ca(1), two equivalent Ca(2), one Fe(1), and one Ga(2) atom. In the second O site, O(2) is bonded in a 6-coordinate geometry to two equivalent Ca(1), two equivalent Ca(2), one Fe(1), and one Ga(2) atom. In the third O site, O(3) is bonded to one Ca(1), one Ca(2), and two equivalent Ga(1) atoms to form distorted corner-sharing OCa2Ga2 tetrahedra. In the fourth O site, O(4) is bonded in a 4-coordinate geometry to one Ca(2), two equivalent Ca(1), one Ga(1), and one Ga(2) atom. In the fifth O site, O(5) is bonded in a 4-coordinate geometry to one Ca(1), two equivalent Ca(2), one Fe(1), and one Ga(1) atom. is represented by the CIF file [CIF]
data_Ca4Ga3FeO10
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.444
_cell_length_b   5.668
_cell_length_c   15.854
_cell_angle_alpha   69.056
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   456.893
_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
  Ca  Ca0  1  0.021  0.635  0.892  1.0
  Ca  Ca1  1  0.521  0.365  0.608  1.0
  Ca  Ca2  1  0.980  0.081  0.391  1.0
  Ca  Ca3  1  0.480  0.919  0.109  1.0
  Ca  Ca4  1  0.979  0.365  0.108  1.0
  Ca  Ca5  1  0.479  0.635  0.392  1.0
  Ca  Ca6  1  0.020  0.919  0.609  1.0
  Ca  Ca7  1  0.520  0.081  0.891  1.0
  Ga  Ga8  1  0.552  0.680  0.750  1.0
  Ga  Ga9  1  0.052  0.320  0.750  1.0
  Ga  Ga10  1  0.448  0.320  0.250  1.0
  Ga  Ga11  1  0.948  0.680  0.250  1.0
  Ga  Ga12  1  0.500  0.500  0.000  1.0
  Ga  Ga13  1  0.000  0.500  0.500  1.0
  Fe  Fe14  1  0.500  0.000  0.500  1.0
  Fe  Fe15  1  0.000  0.000  0.000  1.0
  O  O16  1  0.234  0.713  0.016  1.0
  O  O17  1  0.734  0.287  0.484  1.0
  O  O18  1  0.770  0.751  0.516  1.0
  O  O19  1  0.270  0.249  0.984  1.0
  O  O20  1  0.766  0.287  0.984  1.0
  O  O21  1  0.266  0.713  0.516  1.0
  O  O22  1  0.230  0.249  0.484  1.0
  O  O23  1  0.730  0.751  0.016  1.0
  O  O24  1  0.901  0.625  0.750  1.0
  O  O25  1  0.401  0.375  0.750  1.0
  O  O26  1  0.099  0.375  0.250  1.0
  O  O27  1  0.599  0.625  0.250  1.0
  O  O28  1  0.472  0.717  0.858  1.0
  O  O29  1  0.972  0.283  0.642  1.0
  O  O30  1  0.527  0.068  0.358  1.0
  O  O31  1  0.027  0.932  0.142  1.0
  O  O32  1  0.528  0.283  0.142  1.0
  O  O33  1  0.028  0.717  0.358  1.0
  O  O34  1  0.473  0.932  0.642  1.0
  O  O35  1  0.973  0.068  0.858  1.0
[/CIF]
.