data_global
_chemical_name_mineral 'Natrolite'
loop_
_publ_author_name
'Krogh Andersen E'
'Krogh Andersen I G'
'Ploug-Sorensen G'
_journal_name_full 'European Journal of Mineralogy'
_journal_volume 2 
_journal_year 1990
_journal_page_first 799
_journal_page_last 807
_publ_section_title
;
 Disorder in natrolites: structure determinations of three disordered natrolites and
 one lithium-exchanged disordered natrolite
 Example: Na II
;
_database_code_amcsd 0006400
_chemical_formula_sum 'Na2 Al2 Si3 O12 H4'
_cell_length_a 18.372
_cell_length_b 18.576
_cell_length_c 6.606
_cell_angle_alpha 90
_cell_angle_beta 90
_cell_angle_gamma 90
_cell_volume 2254.484
_exptl_crystal_density_diffrn      2.240
_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
Na   0.22082   0.03023   0.62057   0.02039
Al   0.03784   0.09406   0.61794   0.00735
Si1   0.00000   0.00000   0.00000   0.00963
Si2   0.15413   0.21140   0.62501   0.00887
O1   0.02294   0.06952   0.86364   0.01925
O2   0.07033   0.18089   0.61630   0.01254
O3   0.09784   0.03615   0.50614   0.01634
O4   0.20862   0.15276   0.73052   0.01672
O5   0.17997   0.22715   0.39040   0.01938
O6   0.05698   0.19042   0.11682   0.02609
H1   0.05870   0.14860   0.05500   0.02533
H2   0.10220   0.19460   0.18000   0.02533