data_global
_chemical_name_mineral 'Natrolite'
loop_
_publ_author_name
'Peacor D R'
_journal_name_full 'American Mineralogist'
_journal_volume 58
_journal_year 1973
_journal_page_first 676
_journal_page_last 680
_publ_section_title
;
 High temperature, single-crystal X-Ray study of natrolite
 T = 146 C
;
_database_code_amcsd 374
_chemical_formula_sum 'Si3 Al2 Na2 O12 H4'
_cell_length_a 18.43
_cell_length_b 18.71
_cell_length_c 6.52
_cell_angle_alpha 90.0
_cell_angle_beta 90.0
_cell_angle_gamma 90.0
_cell_volume 2248.261
_exptl_crystal_density_diffrn  2.247
_symmetry_space_group_name_H-M 'F d d 2'
loop_
_space_group_symop_operation_xyz
  'x,y,z'
  'x,1/2+y,1/2+z'
  '1/2+x,y,1/2+z'
  '1/2+x,1/2+y,z'
  '1/4+x,1/4-y,1/4+z'
  '1/4+x,3/4-y,3/4+z'
  '3/4+x,1/4-y,3/4+z'
  '3/4+x,3/4-y,1/4+z'
  '1/4-x,1/4+y,1/4+z'
  '1/4-x,3/4+y,3/4+z'
  '3/4-x,1/4+y,3/4+z'
  '3/4-x,3/4+y,1/4+z'
  '-x,1/2-y,1/2+z'
  '-x,-y,+z'
  '1/2-x,1/2-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
_atom_site_U_iso_or_equiv
Si1   0.0  0.0  0.0  0.0095
Si2   0.15355  0.21113  0.62294  0.00849
Al   0.03769  0.09333  0.61589  0.00836
Na   0.2208  0.0308  0.6173  0.02558
O1   0.023  0.0679  0.8657  0.01976
O2   0.0707  0.1812  0.6091  0.01115
O3   0.0984  0.0349  0.4996  0.01786
O4   0.2068  0.153  0.7259  0.0171
O5   0.181  0.227  0.391  0.01912
Wat   0.0568  0.1895  0.1109  0.0328