data_global
_chemical_name_mineral 'Metanatrolite'
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 II, "metanatrolite"
;
_database_code_amcsd 0014888
_chemical_compound_source 'Khibiny, Kola peninsula, Russia'
_chemical_formula_sum 'Na1.82 Al2 Si3 O10'
_cell_length_a 16.244
_cell_length_b 17.018
_cell_length_c 6.4295
_cell_angle_alpha 90
_cell_angle_beta 90
_cell_angle_gamma 90.0
_cell_volume 1777.373
_exptl_crystal_density_diffrn      2.542
_symmetry_space_group_name_H-M 'F 1 1 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'
  '-x,-y,z'
  '-x,1/2-y,1/2+z'
  '1/2-x,-y,1/2+z'
  '1/2-x,1/2-y,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   0.06050   0.18290   0.13400   1.00000   0.09600
Na2   0.31370   0.06290   0.33100   0.41000   0.06400
Na21   0.28360   0.07470   0.39200   0.41000   0.05200
Al11   0.02640   0.10500   0.60650   1.00000   0.03050
Al12   0.26820   0.14230   0.86130   1.00000   0.02890
Si11   0.00000   0.00000  -0.01060   1.00000   0.02970
Si12   0.25000   0.25000   0.24190   1.00000   0.03050
Si21   0.13710   0.23430   0.61860   1.00000   0.03070
Si22   0.11090  -0.02070   0.35970   1.00000   0.02700
O11   0.04220   0.06900   0.85530   1.00000   0.04000
O12   0.23750   0.17120   0.10960   1.00000   0.03800
O21   0.04170   0.20790   0.60300   1.00000   0.03900
O22   0.20750  -0.04250   0.34560   1.00000   0.02900
O31   0.09110   0.07030   0.40590   1.00000   0.03400
O32   0.14710   0.30390   0.77820   1.00000   0.04200
O41   0.07260  -0.07520   0.54140   1.00000   0.03700
O42   0.19130   0.15910   0.67930   1.00000   0.04400
O51   0.07230  -0.04060   0.13050   1.00000   0.04000
O52   0.16750   0.26570   0.38760   1.00000   0.03900