data_global
_amcsd_formula_title 'Na2 O4 Si Zn'
loop_
_publ_author_name
'Joubert-Bettan C'
'Lachenal R'
'Bertaut E'
'Parthe E'
_journal_name_full 'Journal of Solid State Chemistry'
_journal_volume 1 
_journal_year 1969
_journal_page_first 1
_journal_page_last 5
_publ_section_title
;
 The crystal structures of Na2 Zn Si O4, Na2 Zn Ge O4 and Na2 Mg Ge O4
 _cod_database_code 1009030
;
_database_code_amcsd 0016892
_chemical_formula_sum 'Na2 Zn Si O4'
_cell_length_a 7.02
_cell_length_b 5.44
_cell_length_c 5.24
_cell_angle_alpha 90
_cell_angle_beta 90.1
_cell_angle_gamma 90
_cell_volume 200.109
_exptl_crystal_density_diffrn      3.377
_symmetry_space_group_name_H-M 'P 1 n 1'
loop_
_space_group_symop_operation_xyz
  'x,y,z'
  '1/2+x,-y,1/2+z'
loop_
_atom_site_label
_atom_site_fract_x
_atom_site_fract_y
_atom_site_fract_z
Na1   0.74600   0.69500   0.99700
Na2   0.50500   0.17700   0.99700
Zn1   0.00300   0.19200   0.99900
Si1   0.24500   0.68800   0.00000
O1   0.72400   0.60100   0.43500
O2   0.55600   0.15400   0.43700
O3   0.93500   0.22100   0.35900
O4   0.28600   0.68900   0.30200