data_global
_chemical_name_mineral 'Natrolite'
loop_
_publ_author_name
'Wang H'
'Bish D L'
_journal_name_full 'American Mineralogist'
_journal_volume 93 
_journal_year 2008
_journal_page_first 1191
_journal_page_last 1194
_publ_section_title
;
 A PH2O-dependent structural phase transition in the zeolite natrolite
 Sample: alpha2-metanatrolite
 Note: T = 400 C, P = 0.15 mbar
;
_database_code_amcsd 0004618
_chemical_compound_source 'Synthetic'
_chemical_formula_sum 'Si3 Al2 Na2 O10'
_cell_length_a 17.574
_cell_length_b 18.161
_cell_length_c 6.3674
_cell_angle_alpha 90
_cell_angle_beta 90
_cell_angle_gamma 90
_cell_volume 2032.228
_exptl_crystal_density_diffrn      2.250
_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_occupancy
_atom_site_U_iso_or_equiv
Si1   0.00000   0.00000   0.00000   1.00000   0.00900
Si2   0.14480   0.21890   0.62300   1.00000   0.00900
Al   0.03390   0.09900   0.60600   1.00000   0.00900
Na11   0.00500   0.19800   0.74200   0.41000   0.05100
Na12   0.20700   0.05100   0.26400   0.59000   0.95100
O1   0.03250   0.06730   0.86100   1.00000   0.02000
O2   0.05720   0.19200   0.61100   1.00000   0.02000
O3   0.10200   0.05130   0.46800   1.00000   0.02000
O4   0.19390   0.16020   0.75700   1.00000   0.02000
O5   0.17980   0.22040   0.38900   1.00000   0.02000