data_Zr2NbAg
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.64
_cell_length_b   4.6
_cell_length_c   4.79
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Zr2NbAg
_chemical_formula_sum   'Zr2 Nb1 Ag1'
_cell_volume   80.19
_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
  Zr  Zr2  1  0.82  0.0  0.39  1.0
  Zr  Zr3  1  0.0  0.0  0.0  1.0
  Nb  Nb1  1  0.82  0.3  0.0  1.0
  Ag  Ag0  1  0.0  0.3  0.39  1.0

data_Zr2NbAg
_symmetry_space_group_name_H-M   P1
_cell_length_a   3.64
_cell_length_b   4.6
_cell_length_c   4.79
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Zr2NbAg
_chemical_formula_sum   'Zr2 Nb1 Ag1'
_cell_volume   80.19
_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
  Zr  Zr0  1  0.0  0.0  0.0  1.0
  Zr  Zr1  1  0.82  0.0  0.39  1.0
  Nb  Nb2  1  0.82  0.3  -0.0  1.0
  Ag  Ag3  1  0.0  0.3  0.39  1.0

Zr Zr Nb Ag
Zr Zr Nb Ag 0 3 + o o 1 2 - o o 