data_[Sr1Mg1Cr2O8]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Sr  0.9500  2.0000  1.3200
  Mg  1.3100  1.5000  0.8600
  Cr  1.6600  1.4000  0.9400
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [P-3m1]
_cell_length_a [5.5015]
_cell_length_b [5.5015]
_cell_length_c [6.9496]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [120.0000]
_symmetry_Int_Tables_number [164]
_chemical_formula_structural [SrMgCr2O8]
_chemical_formula_sum '[Sr1 Mg1 Cr2 O8]'
_cell_volume [182.1634]
_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
[
  Sr  Sr0  1  0.0000  0.0000  0.0000  1.0
  Mg  Mg1  1  0.0000  0.0000  0.5000  1.0
  Cr  Cr2  2  0.3333  0.6667  0.2320  1.0
  O  O3  6  0.1666  0.3332  0.3059  1.0
  O  O4  2  0.3333  0.6667  0.9960  1.0
]