data_Na4Sr(SiO3)3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.58
_cell_length_b   6.58
_cell_length_c   6.58
_cell_angle_alpha   109.72
_cell_angle_beta   109.72
_cell_angle_gamma   109.72
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Na4Sr(SiO3)3
_chemical_formula_sum   'Na4 Sr1 Si3 O9'
_cell_volume   217.68
_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  0.42  0.52  0.25  1.0
  Na  Na1  1  0.42  0.48  0.25  1.0
  Na  Na2  1  0.17  0.0  0.25  1.0
  Na  Na3  1  0.0  0.0  0.0  1.0
  Sr  Sr16  1  0.0  0.0  0.25  1.0
  Si  Si13  1  0.35  0.11  0.17  1.0
  Si  Si14  1  0.13  0.75  0.17  1.0
  Si  Si15  1  0.52  0.14  0.17  1.0
  O  O4  1  0.57  0.32  0.02  1.0
  O  O5  1  0.85  0.42  0.48  1.0
  O  O6  1  0.57  0.89  0.48  1.0
  O  O7  1  0.85  0.58  0.02  1.0
  O  O8  1  0.42  0.46  0.25  1.0
  O  O9  1  0.57  0.68  0.48  1.0
  O  O10  1  0.57  0.11  0.02  1.0
  O  O11  1  0.42  0.54  0.25  1.0
  O  O12  1  0.16  0.0  0.25  1.0

data_Na4Sr(SiO3)3
_symmetry_space_group_name_H-M   P1
_cell_length_a   6.5
_cell_length_b   6.58
_cell_length_c   6.58
_cell_angle_alpha   109.72
_cell_angle_beta   109.22
_cell_angle_gamma   109.22
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Na4Sr(SiO3)3
_chemical_formula_sum   'Na4 Sr1 Si3 O9'
_cell_volume   217.68
_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  0.0  0.0  0.0  1.0
  Na  Na1  1  0.25  0.08  0.25  1.0
  Na  Na2  1  0.25  0.84  0.77  1.0
  Na  Na3  1  0.25  0.84  0.73  1.0
  Sr  Sr4  1  0.25  0.25  0.25  1.0
  Si  Si5  1  0.17  0.03  0.42  1.0
  Si  Si6  1  0.17  0.82  0.06  1.0
  Si  Si7  1  0.17  0.65  0.02  1.0
  O  O8  1  0.02  0.17  0.44  1.0
  O  O9  1  0.02  0.44  0.7  1.0
  O  O10  1  0.02  0.44  0.91  1.0
  O  O11  1  0.25  0.09  0.25  1.0
  O  O12  1  0.25  0.83  0.79  1.0
  O  O13  1  0.25  0.83  0.71  1.0
  O  O14  1  0.48  0.63  0.06  1.0
  O  O15  1  0.48  0.91  0.8  1.0
  O  O16  1  0.48  0.91  0.59  1.0

Na Na Na Na Sr Si Si Si O O O O O O O O O