data_9008387
_chemical_name 'Analcime'
loop_
_publ_author_name
'Pechar F'
_journal_name_full "Zeitschrift fur Kristallographie"
_journal_volume 184
_journal_year 1988
_journal_page_first 63
_journal_page_last 69
_publ_section_title
;
 The crystal structure of natural monoclinic analcime (NaAlSi2O6*H2O)
 Locality: Husa u Marcinova, Bohemia, Czech Republic
 Note: z(H1) adjusted to match reported bond angle
;
_chemical_formula_sum 'Na1.8 Al1.8 Si4 O14 H4'
_cell_length_a 13.689
_cell_length_b 13.676
_cell_length_c 13.665
_cell_angle_alpha 90
_cell_angle_beta 90.38
_cell_angle_gamma 90
_cell_volume 2558.179
_symmetry_space_group_name_H-M 'I 1 2/a 1'
loop_
_symmetry_equiv_pos_as_xyz
  'x,y,z'
  '1/2+x,1/2+y,1/2+z'
  '1/2-x,y,-z'
  '-x,1/2+y,1/2-z'
  '1/2+x,-y,z'
  '+x,1/2-y,1/2+z'
  '-x,-y,-z'
  '1/2-x,1/2-y,1/2-z'
loop_
_atom_site_label
_atom_site_fract_x
_atom_site_fract_y
_atom_site_fract_z
_atom_site_occupancy
Na1   0.13180   0.99970   0.25610   0.45000
Na2   0.25000   0.12030   0.00000   0.90000
Na3   0.75000   0.37630   0.00000   0.90000
Na4   0.01150   0.24740   0.11600   0.45000
Al1   0.17530   0.41120   0.13700   0.90000
Al2  -0.15260   0.08560   0.11760   0.90000
Si1   0.11220   0.15800   0.41750   1.00000
Si2   0.42210   0.13100   0.15990   1.00000
Si3  -0.12860   0.33810   0.40560   1.00000
Si4  -0.40290   0.37280   0.16820   1.00000
O1   0.10990   0.34340   0.22740   1.00000
O2  -0.09050   0.14640   0.21500   1.00000
O3   0.11660   0.36240   0.03400   1.00000
O4  -0.09830   0.14990   0.02090   1.00000
O5   0.20290   0.11650   0.35750   1.00000
O6  -0.22370   0.39990   0.37960   1.00000
O7   0.16450   0.53570   0.14520   1.00000
O8  -0.12820   0.96260   0.11370   1.00000
O9   0.39760   0.22430   0.08910   1.00000
O10  -0.35560   0.27800   0.11440   1.00000
O11   0.01320   0.11040   0.37200   1.00000
O12  -0.04050   0.37820   0.33610   1.00000
Ow13   0.13440   0.12640   0.13480   1.00000
Ow14   0.88580   0.37030   0.11690   1.00000
H1   0.08990   0.09490   0.08960   1.00000
H2   0.17900   0.16100   0.09200   1.00000
H3   0.84130   0.33880   0.07190   1.00000
H4   0.93530   0.40180   0.07890   1.00000