data_9002186
_chemical_name 'Heulandite'
loop_
_publ_author_name
'Wust T'
'Stolz J'
'Armbruster T'
_journal_name_full "American Mineralogist"
_journal_volume 84
_journal_year 1999
_journal_page_first 1126
_journal_page_last 1134
_publ_section_title
;
 Partially dealuminated heulandite produced by acidic REECl3 solution: A chemica
 and single-crystal X-ray study
 Sample: DEHY378
;
_chemical_formula_sum 'Si18 Al.412 Na.26 O39.1 H25.12'
_cell_length_a 17.608
_cell_length_b 17.656
_cell_length_c 7.414
_cell_angle_alpha 90
_cell_angle_beta 116.42
_cell_angle_gamma 90
_cell_volume 2064.182
_symmetry_space_group_name_H-M 'C 1 2/m 1'
loop_
_symmetry_equiv_pos_as_xyz
  'x,y,z'
  '1/2+x,1/2+y,z'
  'x,-y,z'
  '1/2+x,1/2-y,z'
  '-x,y,-z'
  '1/2-x,1/2+y,-z'
  '-x,-y,-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_Uiso_or_equiv
Si1   0.17810   0.33296   0.09070   1.00000 ?
Si2   0.28613   0.41108   0.49390   1.00000 ?
Si3   0.29161   0.18976   0.28200   1.00000 ?
Si4   0.06675   0.20343   0.41960   1.00000 ?
Si5   0.00000   0.28100   0.00000   1.00000 ?
Al1   0.00000   0.42100   0.00000   0.10000   0.03293
Al2   0.49000   0.00000   0.55500   0.08000   0.04433
Al3   0.22900   0.50000   0.18000   0.02600   0.03002
NaB   0.48100   0.50000   0.66000   0.13000   0.17731
O1   0.30220   0.50000   0.54020   1.00000 ?
O2   0.26280   0.12200   0.38230   1.00000 ?
O3   0.31260   0.14940   0.11240   1.00000 ?
O4   0.22850   0.39960   0.24850   1.00000 ?
O5   0.00000   0.17880   0.50000   1.00000 ?
O6   0.07950   0.33700   0.04620   1.00000 ?
O7   0.12380   0.27210   0.54990   1.00000 ?
O8   0.01600   0.22800   0.18920   1.00000 ?
O9   0.21640   0.25100   0.18090   1.00000 ?
O10   0.12200   0.12970   0.43580   1.00000 ?
WatA1   0.37100   0.00000   0.37000   0.10000   0.07346
WatA3   0.39200   0.00000   0.31000   0.03000   0.00127
WatA4   0.41000   0.00000   0.12000   0.10000   0.12412
WatA6   0.07300   0.50000   0.04900   0.18000   0.06586
WatA9   0.47900   0.08100   0.69600   0.14000   0.08486
WatB2   0.50000   0.50000   0.50000   0.16000   0.19998
WatB3   0.41100   0.50000   0.08300   0.09000   0.02280
WatC2   0.23200   0.00000   0.04900   0.18000   0.01520
WatC3   0.26600   0.00000   0.10000   0.26000   0.05953
WatC33   0.23100   0.50000  -0.01000   0.08000   0.05003
WatC4   0.28400   0.00000   0.23000   0.17000   0.02786