data_9002185
_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: DEHY323
 Tetrahedral sites were refined as Si
;
_chemical_formula_sum 'Si9 Al.283 Na.19 O20.12 H12.9'
_cell_length_a 17.583
_cell_length_b 17.695
_cell_length_c 7.408
_cell_angle_alpha 90
_cell_angle_beta 116.52
_cell_angle_gamma 90
_cell_volume 2062.339
_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   0.17822   0.33236   0.09120   1.00000 ?
Si2   0.28602   0.41093   0.49400   1.00000 ?
Si3   0.29190   0.19000   0.28280   1.00000 ?
Si4   0.43360   0.29733   0.58200   1.00000 ?
Si5   0.00000   0.28130   0.00000   1.00000 ?
Al1   0.00000   0.42100   0.00000   0.12000   0.02660
Al2   0.48900   0.00000   0.55000   0.13000   0.04686
Al3   0.23500   0.50000   0.17800   0.03300   0.03002
NaB   0.46200   0.50000   0.72400   0.19000   0.10145
O1   0.30190   0.50000   0.53910   1.00000 ?
O2   0.26450   0.12170   0.38430   1.00000 ?
O3   0.31440   0.15080   0.11460   1.00000 ?
O4   0.23040   0.39770   0.24970   1.00000 ?
O5   0.50000   0.32170   0.50000   1.00000 ?
O6   0.07990   0.33740   0.04990   1.00000 ?
O7   0.37570   0.22980   0.45170   1.00000 ?
O8   0.01410   0.22840   0.18780   1.00000 ?
O9   0.21530   0.24970   0.17970   1.00000 ?
O10   0.37920   0.37130   0.57190   1.00000 ?
WatA1   0.37300   0.00000   0.38000   0.12000   0.06206
WatA3   0.39100   0.00000   0.29600   0.12000   0.05193
WatA4   0.41800   0.00000   0.10000   0.12000   0.15451
WatA6   0.07600   0.50000   0.04700   0.25000   0.07498
WatA8   0.50500   0.08900   0.62000   0.10000   0.06966
WatA9   0.47300   0.08000   0.71000   0.15000   0.05953
WatB2   0.52500   0.50000   0.61200   0.32000   0.19998
WatB3   0.41000   0.50000   0.07900   0.17000   0.02913
WatC2   0.22400   0.00000   0.03400   0.30000   0.05319
WatC3   0.25900   0.00000   0.08300   0.22000   0.03673