data_global
_chemical_name_mineral 'Changoite'
loop_
_publ_author_name
'Giglio M'
_journal_name_full 'Acta Crystallographica'
_journal_volume 11 
_journal_year 1958
_journal_page_first 789
_journal_page_last 794
_publ_section_title
;
 Die kristallstruktur von Na2Zn(SO4)2*4H2O (Zn-blodit)
;
_database_code_amcsd 0009212
_chemical_compound_source 'Synthetic'
_chemical_formula_sum 'Zn Na2 S2 O12 H8'
_cell_length_a 11.05
_cell_length_b 8.23
_cell_length_c 5.54
_cell_angle_alpha 90
_cell_angle_beta 100.58
_cell_angle_gamma 90
_cell_volume 495.251
_exptl_crystal_density_diffrn      2.518
_symmetry_space_group_name_H-M 'P 1 21/a 1'
loop_
_space_group_symop_operation_xyz
  'x,y,z'
  '1/2+x,1/2-y,z'
  '1/2-x,1/2+y,-z'
  '-x,-y,-z'
loop_
_atom_site_label
_atom_site_fract_x
_atom_site_fract_y
_atom_site_fract_z
_atom_site_U_iso_or_equiv
Zn   0.00000   0.00000   0.00000   0.00426
Na   0.36200   0.06500   0.12800   0.00426
S   0.13400   0.29400   0.37400   0.00426
O1   0.27200   0.26700   0.34400   0.00426
O2   0.07800   0.40700   0.17800   0.00426
O3   0.07200   0.12600   0.31500   0.00426
O4   0.12600   0.32000   0.64800   0.00426
Wat1   0.15800   0.04100   0.87000   0.00426
Wat2   0.42600   0.28200   0.78400   0.00426