data_[Sr9Mg3U9As24]
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
  U  1.3800  1.7500  0.9913
  As  2.1800  1.1500  0.6600
]
_symmetry_space_group_name_H-M [R-3m]
_cell_length_a [8.3113]
_cell_length_b [8.3113]
_cell_length_c [21.3919]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [120.0000]
_symmetry_Int_Tables_number [166]
_chemical_formula_structural [Sr3MgU3As8]
_chemical_formula_sum '[Sr9 Mg3 U9 As24]'
_cell_volume [1279.7420]
_cell_formula_units_Z [3]
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  9  0.0000  0.5000  0.0000  1
  Mg  Mg1  3  0.0000  0.0000  0.5000  1
  U  U2  9  0.0000  0.5000  0.5000  1
  As  As3  18  0.0161  0.5081  0.7629  1
  As  As4  6  0.0000  0.0000  0.2390  1
]