data_NaMgSi
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.19
_cell_length_b   5.19
_cell_length_c   5.19
_cell_angle_alpha   144.08
_cell_angle_beta   131.14
_cell_angle_gamma   62.11
_symmetry_Int_Tables_number   1
_chemical_formula_structural   NaMgSi
_chemical_formula_sum   'Na1 Mg1 Si1'
_cell_volume   61.16
_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
  Na  Na1  1  0.0  0.0  0.97  1.0
  Mg  Mg0  1  0.0  0.0  0.78  1.0
  Si  Si2  1  0.0  0.0  0.05  1.0

data_NaMgSi
_symmetry_space_group_name_H-M   P1
_cell_length_a   3.2
_cell_length_b   4.29
_cell_length_c   5.19
_cell_angle_alpha   114.43
_cell_angle_beta   107.96
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   NaMgSi
_chemical_formula_sum   'Na1 Mg1 Si1'
_cell_volume   61.16
_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
  Na  Na0  1  0.03  0.03  0.03  1.0
  Mg  Mg1  1  0.22  0.22  0.22  1.0
  Si  Si2  1  0.95  0.95  0.95  1.0

Na Mg Si