The crystal structure described by Ho4Zr3O12 crystallizes in the triclinic P-1 space group. There are four inequivalent Ho sites. In the first Ho site, Ho(1) is bonded in a 7-coordinate geometry to one O(1), one O(2), one O(3), one O(7), one O(9), and two equivalent O(5) atoms. In the second Ho site, Ho(2) is bonded in a 7-coordinate geometry to one O(1), one O(10), one O(12), one O(5), one O(6), one O(7), and one O(9) atom. In the third Ho site, Ho(3) is bonded to one O(10), one O(11), one O(12), one O(3), one O(6), one O(8), and one O(9) atom to form distorted HoO7 pentagonal bipyramids that share  a cornercorner with one Zr(1)O6 octahedra and  an edgeedge with one Zr(1)O6 octahedra. The corner-sharing octahedral tilt angles are 53°. In the fourth Ho site, Ho(4) is bonded in a 7-coordinate geometry to one O(10), one O(12), one O(8), two equivalent O(11), and two equivalent O(4) atoms. There are three inequivalent Zr sites. In the first Zr site, Zr(1) is bonded to one O(1), one O(10), one O(2), one O(3), one O(4), and one O(6) atom to form ZrO6 octahedra that share  a cornercorner with one Ho(3)O7 pentagonal bipyramid and  an edgeedge with one Ho(3)O7 pentagonal bipyramid. In the second Zr site, Zr(2) is bonded in a 7-coordinate geometry to one O(1), one O(11), one O(12), one O(3), one O(4), and two equivalent O(8) atoms. In the third Zr site, Zr(3) is bonded in a 6-coordinate geometry to one O(2), one O(5), one O(6), one O(9), and two equivalent O(7) atoms. There are twelve inequivalent O sites. In the first O site, O(1) is bonded to one Ho(1), one Ho(2), one Zr(1), and one Zr(2) atom to form distorted OHo2Zr2 tetrahedra that share  a cornercorner with one O(11)Ho3Zr tetrahedra,  a cornercorner with one O(5)Ho3Zr tetrahedra, corners with two equivalent O(7)Ho2Zr2 tetrahedra, corners with two equivalent O(8)Ho2Zr2 tetrahedra, corners with two equivalent O(10)Ho3Zr tetrahedra, corners with two equivalent O(9)Ho3Zr tetrahedra,  an edgeedge with one O(4)Ho2Zr2 tetrahedra,  an edgeedge with one O(6)Ho2Zr2 tetrahedra,  an edgeedge with one O(12)Ho3Zr tetrahedra, and  an edgeedge with one O(5)Ho3Zr tetrahedra. In the second O site, O(2) is bonded in a 3-coordinate geometry to one Ho(1), one Zr(1), and one Zr(3) atom. In the third O site, O(3) is bonded in a distorted rectangular see-saw-like geometry to one Ho(1), one Ho(3), one Zr(1), and one Zr(2) atom. In the fourth O site, O(4) is bonded to two equivalent Ho(4), one Zr(1), and one Zr(2) atom to form distorted OHo2Zr2 tetrahedra that share  a cornercorner with one O(6)Ho2Zr2 tetrahedra,  a cornercorner with one O(10)Ho3Zr tetrahedra, corners with two equivalent O(8)Ho2Zr2 tetrahedra, corners with three equivalent O(11)Ho3Zr tetrahedra, corners with three equivalent O(12)Ho3Zr tetrahedra,  an edgeedge with one O(1)Ho2Zr2 tetrahedra,  an edgeedge with one O(4)Ho2Zr2 tetrahedra,  an edgeedge with one O(8)Ho2Zr2 tetrahedra,  an edgeedge with one O(10)Ho3Zr tetrahedra, and  an edgeedge with one O(11)Ho3Zr tetrahedra. In the fifth O site, O(5) is bonded to one Ho(2), two equivalent Ho(1), and one Zr(3) atom to form distorted OHo3Zr tetrahedra that share  a cornercorner with one O(1)Ho2Zr2 tetrahedra,  a cornercorner with one O(10)Ho3Zr tetrahedra,  a cornercorner with one O(12)Ho3Zr tetrahedra, corners with two equivalent O(6)Ho2Zr2 tetrahedra, corners with two equivalent O(9)Ho3Zr tetrahedra, corners with three equivalent O(7)Ho2Zr2 tetrahedra,  an edgeedge with one O(1)Ho2Zr2 tetrahedra,  an edgeedge with one O(7)Ho2Zr2 tetrahedra,  an edgeedge with one O(5)Ho3Zr tetrahedra, and  an edgeedge with one O(9)Ho3Zr tetrahedra. In the sixth O site, O(6) is bonded to one Ho(2), one Ho(3), one Zr(1), and one Zr(3) atom to form distorted OHo2Zr2 tetrahedra that share  a cornercorner with one O(4)Ho2Zr2 tetrahedra,  a cornercorner with one O(7)Ho2Zr2 tetrahedra,  a cornercorner with one O(8)Ho2Zr2 tetrahedra,  a cornercorner with one O(10)Ho3Zr tetrahedra,  a cornercorner with one O(11)Ho3Zr tetrahedra,  a cornercorner with one O(9)Ho3Zr tetrahedra, corners with two equivalent O(12)Ho3Zr tetrahedra, corners with two equivalent O(5)Ho3Zr tetrahedra,  an edgeedge with one O(1)Ho2Zr2 tetrahedra,  an edgeedge with one O(7)Ho2Zr2 tetrahedra,  an edgeedge with one O(10)Ho3Zr tetrahedra, and  an edgeedge with one O(9)Ho3Zr tetrahedra. In the seventh O site, O(7) is bonded to one Ho(1), one Ho(2), and two equivalent Zr(3) atoms to form OHo2Zr2 tetrahedra that share  a cornercorner with one O(6)Ho2Zr2 tetrahedra,  a cornercorner with one O(10)Ho3Zr tetrahedra,  a cornercorner with one O(12)Ho3Zr tetrahedra, corners with two equivalent O(1)Ho2Zr2 tetrahedra, corners with two equivalent O(9)Ho3Zr tetrahedra, corners with three equivalent O(5)Ho3Zr tetrahedra,  an edgeedge with one O(6)Ho2Zr2 tetrahedra,  an edgeedge with one O(7)Ho2Zr2 tetrahedra,  an edgeedge with one O(5)Ho3Zr tetrahedra, and  an edgeedge with one O(9)Ho3Zr tetrahedra. In the eighth O site, O(8) is bonded to one Ho(3), one Ho(4), and two equivalent Zr(2) atoms to form OHo2Zr2 tetrahedra that share  a cornercorner with one O(6)Ho2Zr2 tetrahedra,  a cornercorner with one O(9)Ho3Zr tetrahedra, corners with two equivalent O(1)Ho2Zr2 tetrahedra, corners with two equivalent O(4)Ho2Zr2 tetrahedra, corners with two equivalent O(10)Ho3Zr tetrahedra, corners with two equivalent O(12)Ho3Zr tetrahedra, corners with three equivalent O(11)Ho3Zr tetrahedra,  an edgeedge with one O(4)Ho2Zr2 tetrahedra,  an edgeedge with one O(8)Ho2Zr2 tetrahedra,  an edgeedge with one O(11)Ho3Zr tetrahedra, and  an edgeedge with one O(12)Ho3Zr tetrahedra. In the ninth O site, O(9) is bonded to one Ho(1), one Ho(2), one Ho(3), and one Zr(3) atom to form OHo3Zr tetrahedra that share  a cornercorner with one O(6)Ho2Zr2 tetrahedra,  a cornercorner with one O(8)Ho2Zr2 tetrahedra,  a cornercorner with one O(11)Ho3Zr tetrahedra, corners with two equivalent O(1)Ho2Zr2 tetrahedra, corners with two equivalent O(7)Ho2Zr2 tetrahedra, corners with two equivalent O(10)Ho3Zr tetrahedra, corners with two equivalent O(5)Ho3Zr tetrahedra,  an edgeedge with one O(6)Ho2Zr2 tetrahedra,  an edgeedge with one O(7)Ho2Zr2 tetrahedra,  an edgeedge with one O(12)Ho3Zr tetrahedra, and  an edgeedge with one O(5)Ho3Zr tetrahedra. In the tenth O site, O(10) is bonded to one Ho(2), one Ho(3), one Ho(4), and one Zr(1) atom to form distorted OHo3Zr tetrahedra that share  a cornercorner with one O(4)Ho2Zr2 tetrahedra,  a cornercorner with one O(6)Ho2Zr2 tetrahedra,  a cornercorner with one O(7)Ho2Zr2 tetrahedra,  a cornercorner with one O(11)Ho3Zr tetrahedra,  a cornercorner with one O(12)Ho3Zr tetrahedra,  a cornercorner with one O(5)Ho3Zr tetrahedra, corners with two equivalent O(1)Ho2Zr2 tetrahedra, corners with two equivalent O(8)Ho2Zr2 tetrahedra, corners with two equivalent O(9)Ho3Zr tetrahedra,  an edgeedge with one O(4)Ho2Zr2 tetrahedra,  an edgeedge with one O(6)Ho2Zr2 tetrahedra,  an edgeedge with one O(11)Ho3Zr tetrahedra, and  an edgeedge with one O(12)Ho3Zr tetrahedra. In the eleventh O site, O(11) is bonded to one Ho(3), two equivalent Ho(4), and one Zr(2) atom to form OHo3Zr tetrahedra that share  a cornercorner with one O(1)Ho2Zr2 tetrahedra,  a cornercorner with one O(6)Ho2Zr2 tetrahedra,  a cornercorner with one O(10)Ho3Zr tetrahedra,  a cornercorner with one O(9)Ho3Zr tetrahedra, corners with two equivalent O(12)Ho3Zr tetrahedra, corners with three equivalent O(4)Ho2Zr2 tetrahedra, corners with three equivalent O(8)Ho2Zr2 tetrahedra,  an edgeedge with one O(4)Ho2Zr2 tetrahedra,  an edgeedge with one O(8)Ho2Zr2 tetrahedra,  an edgeedge with one O(10)Ho3Zr tetrahedra,  an edgeedge with one O(11)Ho3Zr tetrahedra, and  an edgeedge with one O(12)Ho3Zr tetrahedra. In the twelfth O site, O(12) is bonded to one Ho(2), one Ho(3), one Ho(4), and one Zr(2) atom to form distorted OHo3Zr tetrahedra that share  a cornercorner with one O(7)Ho2Zr2 tetrahedra,  a cornercorner with one O(10)Ho3Zr tetrahedra,  a cornercorner with one O(5)Ho3Zr tetrahedra, corners with two equivalent O(6)Ho2Zr2 tetrahedra, corners with two equivalent O(8)Ho2Zr2 tetrahedra, corners with two equivalent O(11)Ho3Zr tetrahedra, corners with three equivalent O(4)Ho2Zr2 tetrahedra,  an edgeedge with one O(1)Ho2Zr2 tetrahedra,  an edgeedge with one O(8)Ho2Zr2 tetrahedra,  an edgeedge with one O(10)Ho3Zr tetrahedra,  an edgeedge with one O(11)Ho3Zr tetrahedra, and  an edgeedge with one O(9)Ho3Zr tetrahedra. is represented by the CIF card [CIF]
data_Ho4Zr3O12
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.340
_cell_length_b   6.407
_cell_length_c   12.714
_cell_angle_alpha   99.287
_cell_angle_beta   99.265
_cell_angle_gamma   99.379
_symmetry_Int_Tables_number   1
_cell_volume   493.456
_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
  Ho  Ho0  1  0.388  0.865  0.098  1.0
  Ho  Ho1  1  0.310  0.610  0.818  1.0
  Ho  Ho2  1  0.298  0.611  0.319  1.0
  Ho  Ho3  1  0.858  0.693  0.447  1.0
  Ho  Ho4  1  0.690  0.390  0.182  1.0
  Ho  Ho5  1  0.142  0.307  0.553  1.0
  Ho  Ho6  1  0.612  0.135  0.902  1.0
  Ho  Ho7  1  0.702  0.389  0.681  1.0
  Zr  Zr8  1  0.992  0.994  0.247  1.0
  Zr  Zr9  1  0.392  0.857  0.595  1.0
  Zr  Zr10  1  0.008  0.006  0.753  1.0
  Zr  Zr11  1  0.854  0.675  0.947  1.0
  Zr  Zr12  1  0.146  0.325  0.053  1.0
  Zr  Zr13  1  0.608  0.143  0.405  1.0
  O  O14  1  0.321  0.943  0.784  1.0
  O  O15  1  0.033  0.893  0.089  1.0
  O  O16  1  0.316  0.962  0.295  1.0
  O  O17  1  0.075  0.923  0.594  1.0
  O  O18  1  0.589  0.819  0.962  1.0
  O  O19  1  0.925  0.694  0.792  1.0
  O  O20  1  0.173  0.576  0.966  1.0
  O  O21  1  0.566  0.831  0.462  1.0
  O  O22  1  0.408  0.567  0.158  1.0
  O  O23  1  0.926  0.682  0.279  1.0
  O  O24  1  0.185  0.594  0.470  1.0
  O  O25  1  0.592  0.433  0.842  1.0
  O  O26  1  0.429  0.584  0.658  1.0
  O  O27  1  0.827  0.424  0.034  1.0
  O  O28  1  0.075  0.306  0.208  1.0
  O  O29  1  0.571  0.416  0.342  1.0
  O  O30  1  0.411  0.181  0.038  1.0
  O  O31  1  0.815  0.406  0.530  1.0
  O  O32  1  0.074  0.318  0.721  1.0
  O  O33  1  0.434  0.169  0.538  1.0
  O  O34  1  0.967  0.107  0.911  1.0
  O  O35  1  0.679  0.057  0.216  1.0
  O  O36  1  0.925  0.077  0.406  1.0
  O  O37  1  0.684  0.038  0.705  1.0
[/CIF]
.
The crystal structure described by Ho4Zr3O12 crystallizes in the triclinic P-1 space group. There are four inequivalent Ho sites. In the first Ho site, Ho(1) is bonded in a 7-coordinate geometry to one O(1), one O(2), one O(3), one O(7), one O(9), and two equivalent O(5) atoms. In the second Ho site, Ho(2) is bonded in a 7-coordinate geometry to one O(1), one O(10), one O(12), one O(5), one O(6), one O(7), and one O(9) atom. In the third Ho site, Ho(3) is bonded to one O(10), one O(11), one O(12), one O(3), one O(6), one O(8), and one O(9) atom to form distorted HoO7 pentagonal bipyramids that share  a cornercorner with one Zr(1)O6 octahedra and  an edgeedge with one Zr(1)O6 octahedra. The corner-sharing octahedral tilt angles are 53°. In the fourth Ho site, Ho(4) is bonded in a 7-coordinate geometry to one O(10), one O(12), one O(8), two equivalent O(11), and two equivalent O(4) atoms. There are three inequivalent Zr sites. In the first Zr site, Zr(1) is bonded to one O(1), one O(10), one O(2), one O(3), one O(4), and one O(6) atom to form ZrO6 octahedra that share  a cornercorner with one Ho(3)O7 pentagonal bipyramid and  an edgeedge with one Ho(3)O7 pentagonal bipyramid. In the second Zr site, Zr(2) is bonded in a 7-coordinate geometry to one O(1), one O(11), one O(12), one O(3), one O(4), and two equivalent O(8) atoms. In the third Zr site, Zr(3) is bonded in a 6-coordinate geometry to one O(2), one O(5), one O(6), one O(9), and two equivalent O(7) atoms. There are twelve inequivalent O sites. In the first O site, O(1) is bonded to one Ho(1), one Ho(2), one Zr(1), and one Zr(2) atom to form distorted OHo2Zr2 tetrahedra that share  a cornercorner with one O(11)Ho3Zr tetrahedra,  a cornercorner with one O(5)Ho3Zr tetrahedra, corners with two equivalent O(7)Ho2Zr2 tetrahedra, corners with two equivalent O(8)Ho2Zr2 tetrahedra, corners with two equivalent O(10)Ho3Zr tetrahedra, corners with two equivalent O(9)Ho3Zr tetrahedra,  an edgeedge with one O(4)Ho2Zr2 tetrahedra,  an edgeedge with one O(6)Ho2Zr2 tetrahedra,  an edgeedge with one O(12)Ho3Zr tetrahedra, and  an edgeedge with one O(5)Ho3Zr tetrahedra. In the second O site, O(2) is bonded in a 3-coordinate geometry to one Ho(1), one Zr(1), and one Zr(3) atom. In the third O site, O(3) is bonded in a distorted rectangular see-saw-like geometry to one Ho(1), one Ho(3), one Zr(1), and one Zr(2) atom. In the fourth O site, O(4) is bonded to two equivalent Ho(4), one Zr(1), and one Zr(2) atom to form distorted OHo2Zr2 tetrahedra that share  a cornercorner with one O(6)Ho2Zr2 tetrahedra,  a cornercorner with one O(10)Ho3Zr tetrahedra, corners with two equivalent O(8)Ho2Zr2 tetrahedra, corners with three equivalent O(11)Ho3Zr tetrahedra, corners with three equivalent O(12)Ho3Zr tetrahedra,  an edgeedge with one O(1)Ho2Zr2 tetrahedra,  an edgeedge with one O(4)Ho2Zr2 tetrahedra,  an edgeedge with one O(8)Ho2Zr2 tetrahedra,  an edgeedge with one O(10)Ho3Zr tetrahedra, and  an edgeedge with one O(11)Ho3Zr tetrahedra. In the fifth O site, O(5) is bonded to one Ho(2), two equivalent Ho(1), and one Zr(3) atom to form distorted OHo3Zr tetrahedra that share  a cornercorner with one O(1)Ho2Zr2 tetrahedra,  a cornercorner with one O(10)Ho3Zr tetrahedra,  a cornercorner with one O(12)Ho3Zr tetrahedra, corners with two equivalent O(6)Ho2Zr2 tetrahedra, corners with two equivalent O(9)Ho3Zr tetrahedra, corners with three equivalent O(7)Ho2Zr2 tetrahedra,  an edgeedge with one O(1)Ho2Zr2 tetrahedra,  an edgeedge with one O(7)Ho2Zr2 tetrahedra,  an edgeedge with one O(5)Ho3Zr tetrahedra, and  an edgeedge with one O(9)Ho3Zr tetrahedra. In the sixth O site, O(6) is bonded to one Ho(2), one Ho(3), one Zr(1), and one Zr(3) atom to form distorted OHo2Zr2 tetrahedra that share  a cornercorner with one O(4)Ho2Zr2 tetrahedra,  a cornercorner with one O(7)Ho2Zr2 tetrahedra,  a cornercorner with one O(8)Ho2Zr2 tetrahedra,  a cornercorner with one O(10)Ho3Zr tetrahedra,  a cornercorner with one O(11)Ho3Zr tetrahedra,  a cornercorner with one O(9)Ho3Zr tetrahedra, corners with two equivalent O(12)Ho3Zr tetrahedra, corners with two equivalent O(5)Ho3Zr tetrahedra,  an edgeedge with one O(1)Ho2Zr2 tetrahedra,  an edgeedge with one O(7)Ho2Zr2 tetrahedra,  an edgeedge with one O(10)Ho3Zr tetrahedra, and  an edgeedge with one O(9)Ho3Zr tetrahedra. In the seventh O site, O(7) is bonded to one Ho(1), one Ho(2), and two equivalent Zr(3) atoms to form OHo2Zr2 tetrahedra that share  a cornercorner with one O(6)Ho2Zr2 tetrahedra,  a cornercorner with one O(10)Ho3Zr tetrahedra,  a cornercorner with one O(12)Ho3Zr tetrahedra, corners with two equivalent O(1)Ho2Zr2 tetrahedra, corners with two equivalent O(9)Ho3Zr tetrahedra, corners with three equivalent O(5)Ho3Zr tetrahedra,  an edgeedge with one O(6)Ho2Zr2 tetrahedra,  an edgeedge with one O(7)Ho2Zr2 tetrahedra,  an edgeedge with one O(5)Ho3Zr tetrahedra, and  an edgeedge with one O(9)Ho3Zr tetrahedra. In the eighth O site, O(8) is bonded to one Ho(3), one Ho(4), and two equivalent Zr(2) atoms to form OHo2Zr2 tetrahedra that share  a cornercorner with one O(6)Ho2Zr2 tetrahedra,  a cornercorner with one O(9)Ho3Zr tetrahedra, corners with two equivalent O(1)Ho2Zr2 tetrahedra, corners with two equivalent O(4)Ho2Zr2 tetrahedra, corners with two equivalent O(10)Ho3Zr tetrahedra, corners with two equivalent O(12)Ho3Zr tetrahedra, corners with three equivalent O(11)Ho3Zr tetrahedra,  an edgeedge with one O(4)Ho2Zr2 tetrahedra,  an edgeedge with one O(8)Ho2Zr2 tetrahedra,  an edgeedge with one O(11)Ho3Zr tetrahedra, and  an edgeedge with one O(12)Ho3Zr tetrahedra. In the ninth O site, O(9) is bonded to one Ho(1), one Ho(2), one Ho(3), and one Zr(3) atom to form OHo3Zr tetrahedra that share  a cornercorner with one O(6)Ho2Zr2 tetrahedra,  a cornercorner with one O(8)Ho2Zr2 tetrahedra,  a cornercorner with one O(11)Ho3Zr tetrahedra, corners with two equivalent O(1)Ho2Zr2 tetrahedra, corners with two equivalent O(7)Ho2Zr2 tetrahedra, corners with two equivalent O(10)Ho3Zr tetrahedra, corners with two equivalent O(5)Ho3Zr tetrahedra,  an edgeedge with one O(6)Ho2Zr2 tetrahedra,  an edgeedge with one O(7)Ho2Zr2 tetrahedra,  an edgeedge with one O(12)Ho3Zr tetrahedra, and  an edgeedge with one O(5)Ho3Zr tetrahedra. In the tenth O site, O(10) is bonded to one Ho(2), one Ho(3), one Ho(4), and one Zr(1) atom to form distorted OHo3Zr tetrahedra that share  a cornercorner with one O(4)Ho2Zr2 tetrahedra,  a cornercorner with one O(6)Ho2Zr2 tetrahedra,  a cornercorner with one O(7)Ho2Zr2 tetrahedra,  a cornercorner with one O(11)Ho3Zr tetrahedra,  a cornercorner with one O(12)Ho3Zr tetrahedra,  a cornercorner with one O(5)Ho3Zr tetrahedra, corners with two equivalent O(1)Ho2Zr2 tetrahedra, corners with two equivalent O(8)Ho2Zr2 tetrahedra, corners with two equivalent O(9)Ho3Zr tetrahedra,  an edgeedge with one O(4)Ho2Zr2 tetrahedra,  an edgeedge with one O(6)Ho2Zr2 tetrahedra,  an edgeedge with one O(11)Ho3Zr tetrahedra, and  an edgeedge with one O(12)Ho3Zr tetrahedra. In the eleventh O site, O(11) is bonded to one Ho(3), two equivalent Ho(4), and one Zr(2) atom to form OHo3Zr tetrahedra that share  a cornercorner with one O(1)Ho2Zr2 tetrahedra,  a cornercorner with one O(6)Ho2Zr2 tetrahedra,  a cornercorner with one O(10)Ho3Zr tetrahedra,  a cornercorner with one O(9)Ho3Zr tetrahedra, corners with two equivalent O(12)Ho3Zr tetrahedra, corners with three equivalent O(4)Ho2Zr2 tetrahedra, corners with three equivalent O(8)Ho2Zr2 tetrahedra,  an edgeedge with one O(4)Ho2Zr2 tetrahedra,  an edgeedge with one O(8)Ho2Zr2 tetrahedra,  an edgeedge with one O(10)Ho3Zr tetrahedra,  an edgeedge with one O(11)Ho3Zr tetrahedra, and  an edgeedge with one O(12)Ho3Zr tetrahedra. In the twelfth O site, O(12) is bonded to one Ho(2), one Ho(3), one Ho(4), and one Zr(2) atom to form distorted OHo3Zr tetrahedra that share  a cornercorner with one O(7)Ho2Zr2 tetrahedra,  a cornercorner with one O(10)Ho3Zr tetrahedra,  a cornercorner with one O(5)Ho3Zr tetrahedra, corners with two equivalent O(6)Ho2Zr2 tetrahedra, corners with two equivalent O(8)Ho2Zr2 tetrahedra, corners with two equivalent O(11)Ho3Zr tetrahedra, corners with three equivalent O(4)Ho2Zr2 tetrahedra,  an edgeedge with one O(1)Ho2Zr2 tetrahedra,  an edgeedge with one O(8)Ho2Zr2 tetrahedra,  an edgeedge with one O(10)Ho3Zr tetrahedra,  an edgeedge with one O(11)Ho3Zr tetrahedra, and  an edgeedge with one O(9)Ho3Zr tetrahedra. is represented by the CIF card [CIF]
data_Ho4Zr3O12
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.340
_cell_length_b   6.407
_cell_length_c   12.714
_cell_angle_alpha   99.287
_cell_angle_beta   99.265
_cell_angle_gamma   99.379
_symmetry_Int_Tables_number   1
_cell_volume   493.456
_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
  Ho  Ho0  1  0.388  0.865  0.098  1.0
  Ho  Ho1  1  0.310  0.610  0.818  1.0
  Ho  Ho2  1  0.298  0.611  0.319  1.0
  Ho  Ho3  1  0.858  0.693  0.447  1.0
  Ho  Ho4  1  0.690  0.390  0.182  1.0
  Ho  Ho5  1  0.142  0.307  0.553  1.0
  Ho  Ho6  1  0.612  0.135  0.902  1.0
  Ho  Ho7  1  0.702  0.389  0.681  1.0
  Zr  Zr8  1  0.992  0.994  0.247  1.0
  Zr  Zr9  1  0.392  0.857  0.595  1.0
  Zr  Zr10  1  0.008  0.006  0.753  1.0
  Zr  Zr11  1  0.854  0.675  0.947  1.0
  Zr  Zr12  1  0.146  0.325  0.053  1.0
  Zr  Zr13  1  0.608  0.143  0.405  1.0
  O  O14  1  0.321  0.943  0.784  1.0
  O  O15  1  0.033  0.893  0.089  1.0
  O  O16  1  0.316  0.962  0.295  1.0
  O  O17  1  0.075  0.923  0.594  1.0
  O  O18  1  0.589  0.819  0.962  1.0
  O  O19  1  0.925  0.694  0.792  1.0
  O  O20  1  0.173  0.576  0.966  1.0
  O  O21  1  0.566  0.831  0.462  1.0
  O  O22  1  0.408  0.567  0.158  1.0
  O  O23  1  0.926  0.682  0.279  1.0
  O  O24  1  0.185  0.594  0.470  1.0
  O  O25  1  0.592  0.433  0.842  1.0
  O  O26  1  0.429  0.584  0.658  1.0
  O  O27  1  0.827  0.424  0.034  1.0
  O  O28  1  0.075  0.306  0.208  1.0
  O  O29  1  0.571  0.416  0.342  1.0
  O  O30  1  0.411  0.181  0.038  1.0
  O  O31  1  0.815  0.406  0.530  1.0
  O  O32  1  0.074  0.318  0.721  1.0
  O  O33  1  0.434  0.169  0.538  1.0
  O  O34  1  0.967  0.107  0.911  1.0
  O  O35  1  0.679  0.057  0.216  1.0
  O  O36  1  0.925  0.077  0.406  1.0
  O  O37  1  0.684  0.038  0.705  1.0
[/CIF]
.