data_global
_chemical_name_mineral 'Analcime'
loop_
_publ_author_name
'Cruciani G'
'Gualtieri A'
_journal_name_full 'American Mineralogist'
_journal_volume 84 
_journal_year 1999
_journal_page_first 112
_journal_page_last 119
_publ_section_title
;
 Dehydration dynamics of analcime by in situ synchrotron powder diffraction
 Sample at T = 921 K
;
_database_code_amcsd 0002064
_chemical_formula_sum '(Si4.1 Al1.9) Na1.86 O12'
_cell_length_a 13.6251
_cell_length_b 13.6251
_cell_length_c 13.5870
_cell_angle_alpha 90
_cell_angle_beta 90
_cell_angle_gamma 90
_cell_volume 2522.336
_exptl_crystal_density_diffrn      2.113
_symmetry_space_group_name_H-M 'I 41/a c d'
loop_
_space_group_symop_operation_xyz
  'x,y,z'
  '1/2+x,1/2+y,1/2+z'
  '1/4-y,3/4-x,3/4+z'
  '3/4-y,1/4-x,1/4+z'
  '1/4+y,3/4+x,3/4-z'
  '3/4+y,1/4+x,1/4-z'
  '1/4+y,3/4-x,1/4-z'
  '3/4+y,1/4-x,3/4-z'
  '1/4-y,3/4+x,1/4+z'
  '3/4-y,1/4+x,3/4+z'
  '1/2+x,-y,z'
  '+x,1/2-y,1/2+z'
  '1/2-x,y,-z'
  '-x,1/2+y,1/2-z'
  '1/2+x,y,1/2-z'
  '+x,1/2+y,-z'
  '1/2-x,-y,1/2+z'
  '-x,1/2-y,+z'
  '1/4+y,1/4+x,1/4+z'
  '3/4+y,3/4+x,3/4+z'
  '1/4-y,1/4-x,1/4-z'
  '3/4-y,3/4-x,3/4-z'
  '1/4-y,1/4+x,3/4-z'
  '3/4-y,3/4+x,1/4-z'
  '1/4+y,1/4-x,3/4+z'
  '3/4+y,3/4-x,1/4+z'
  '-x,y,1/2+z'
  '1/2-x,1/2+y,+z'
  'x,-y,1/2-z'
  '1/2+x,1/2-y,-z'
  '-x,-y,-z'
  '1/2-x,1/2-y,1/2-z'
loop_
_atom_site_label
_atom_site_fract_x
_atom_site_fract_y
_atom_site_fract_z
_atom_site_occupancy
_atom_site_U_iso_or_equiv
Si1   0.12220   0.16380   0.41330   0.57500   0.07000
Al1   0.12220   0.16380   0.41330   0.42500   0.07000
Si2   0.15950   0.40950   0.12500   0.90000   0.04700
Al2   0.15950   0.40950   0.12500   0.10000   0.04700
Na11   0.22280   0.10550   0.03010   0.23000   0.10400
Na12   0.16980   0.17360   0.06960   0.16000   0.10400
Na2   0.00000   0.25000   0.12500   0.10000   0.10400
Na3  -0.00500   0.07000   0.10000   0.05000   0.10400
O1   0.09840   0.37410   0.21940   1.00000   0.06600
O2   0.22250   0.11220   0.36620   1.00000   0.08500
O3   0.34910   0.22100   0.11000   1.00000   0.10600