data_global
_chemical_name_mineral 'Mendozite'
loop_
_publ_author_name
'Fang J H'
'Robinson P D'
_journal_name_full 'American Mineralogist'
_journal_volume 57
_journal_year 1972
_journal_page_first 1081
_journal_page_last 1088
_publ_section_title
;
 Crystal structures and mineral chemistry of double-salt hydrates: II. The
 crystal structure of mendozite, NaAl(SO4)2.11H2O
;
_database_code_amcsd 289
_chemical_formula_sum 'Na Al S2 O19 H22'
_cell_length_a 21.75
_cell_length_b 9.11
_cell_length_c 8.3
_cell_angle_alpha 90.0
_cell_angle_beta 92.47
_cell_angle_gamma 90.0
_cell_volume 1643.055
_exptl_crystal_density_diffrn  1.78
_symmetry_space_group_name_H-M 'C 1 2/c 1'
loop_
_space_group_symop_operation_xyz
  'x,y,z'
  '1/2+x,1/2+y,z'
  'x,-y,1/2+z'
  '1/2+x,1/2-y,1/2+z'
  '-x,y,1/2-z'
  '1/2-x,1/2+y,1/2-z'
  '-x,-y,-z'
  '1/2-x,1/2-y,-z'
loop_
_atom_site_label
_atom_site_fract_x
_atom_site_fract_y
_atom_site_fract_z
_atom_site_U_iso_or_equiv
Na   0.0  0.0  0.0  0.02596
Al   0.25  0.25  0.0  0.01267
S   0.1314  0.2532  0.5295  0.01545
O1   0.1461  0.3955  0.6107  0.02305
O2   0.0747  0.1926  0.5903  0.03242
O3   0.184  0.1544  0.5654  0.03154
O4   0.1248  0.2758  0.3548  0.0304
Wat1   0.2306  0.3024  0.21  0.02368
Wat2   0.1832  0.1231  0.9857  0.02356
Wat3   0.1979  0.4037  0.9193  0.02001
Wat4   0.0  0.1231  0.25  0.03787
Wat5   0.0683  0.1864  0.9161  0.0285
Wat6   0.0358  0.4291  0.1101  0.04661