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 = 573 K, crystal III, "high natrolite"
;
_database_code_amcsd 0014893
_chemical_compound_source 'Khibiny, Kola peninsula, Russia'
_chemical_formula_sum 'Na2 Al2 Si3 O10'
_cell_length_a 17.328
_cell_length_b 17.551
_cell_length_c 6.385
_cell_angle_alpha 90
_cell_angle_beta 90
_cell_angle_gamma 90
_cell_volume 1941.830
_exptl_crystal_density_diffrn      2.355
_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   0.04700   0.31000   0.34200   0.25000   0.13000
Na2   0.01000   0.32500   0.69200   0.25000   0.08300
Na3  -0.06500   0.27400   0.59600   0.25000   0.14000
Na4   0.10500   0.12700   0.05400   0.25000   0.09400
Al  -0.02770  -0.10380   0.61280   1.00000   0.08900
Si1   0.00000   0.00000  -0.01020   1.00000   0.05000
Si2  -0.14700  -0.22420   0.62730   1.00000   0.07200
O1   0.01820   0.07150   0.83000   1.00000   0.16000
O2   0.05720   0.19940   0.61400   1.00000   0.07700
O3  -0.15100  -0.30520   0.72700   1.00000   0.15200
O4   0.18850   0.15720   0.75300   1.00000   0.18000
O5   0.18200   0.22090   0.39000   1.00000   0.15200