data_global
_chemical_name_mineral 'Natrolite'
loop_
_publ_author_name
'Baur W H'
'Joswig W'
_journal_name_full 'Neues Jahrbuch fur Mineralogie, Monatshefte'
_journal_volume 1996 
_journal_year 1996
_journal_page_first 171
_journal_page_last 187
_publ_section_title
;
 The phases of natrolite occurring during dehydration and rehydration studied
 by single crystal X-ray diffraction methods between room temperature and 923 K
 Sample: T = 823 K, crystal III, "high natrolite"
;
_database_code_amcsd 0014892
_chemical_compound_source 'Khibiny, Kola peninsula, Russia'
_chemical_formula_sum 'Na2 Al2 Si3 O10'
_cell_length_a 17.324
_cell_length_b 17.638
_cell_length_c 6.416
_cell_angle_alpha 90
_cell_angle_beta 90
_cell_angle_gamma 90
_cell_volume 1960.477
_exptl_crystal_density_diffrn      2.332
_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
Na1   0.06700   0.31200   0.30600   0.25000   0.14000
Na2   0.01700   0.32600   0.69000   0.25000   0.05600
Na3  -0.04100   0.31200   0.64700   0.25000   0.12000
Na4   0.11000   0.13600   0.06800   0.25000   0.15000
Al  -0.02830  -0.10130   0.61280   1.00000   0.08000
Si1   0.00000   0.00000  -0.00200   1.00000   0.04800
Si2  -0.14630  -0.22470   0.62620   1.00000   0.07200
O1   0.02030   0.07040   0.83800   1.00000   0.15000
O2   0.05980   0.19780   0.61500   1.00000   0.09000
O3  -0.15250  -0.30290   0.71600   1.00000   0.12800
O4   0.19980   0.16260   0.74100   1.00000   0.17200
O5   0.17860   0.22450   0.40700   1.00000   0.10800