data_global
_chemical_name_mineral 'Laumontite'
loop_
_publ_author_name
'Stahl K'
'Artioli G'
'Hanson J C'
_journal_name_full 'Physics and Chemistry of Minerals'
_journal_volume 23 
_journal_year 1996
_journal_page_first 328
_journal_page_last 336
_publ_section_title
;
 The dehydration process in the zeolite laumontite:
 a real-time synchrotron X-ray powder diffraction study
 Sample: T = 367 K
;
_database_code_amcsd 0007947
_chemical_formula_sum 'Si4 Al2 O16.96 Ca H7.92'
_cell_length_a 14.7612
_cell_length_b 13.0891
_cell_length_c 7.5480
_cell_angle_alpha 90
_cell_angle_beta 111.804
_cell_angle_gamma 90
_cell_volume 1354.024
_exptl_crystal_density_diffrn      2.383
_symmetry_space_group_name_H-M 'C 1 2/m 1'
loop_
_space_group_symop_operation_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_U_iso_or_equiv
Si1   0.23780   0.38220   0.15970   1.00000   0.01520
Si2   0.08010   0.38460   0.32610   1.00000   0.01520
Al   0.12820   0.30900   0.73500   1.00000   0.01520
O1   0.25660   0.50000   0.22470   1.00000   0.01773
O2   0.21320   0.37650   0.92800   1.00000   0.01773
O3   0.14590   0.38100   0.55840   1.00000   0.01773
O4   0.15040   0.34110   0.21230   1.00000   0.01773
O5   0.33440   0.31760   0.26200   1.00000   0.01773
O6   0.04770   0.50000   0.26590   1.00000   0.01773
O7   0.00800   0.31120   0.72010   1.00000   0.01773
Ca   0.27030   0.50000   0.75630   1.00000   0.02786
OWat1   0.02500   0.17000   0.00000   0.09000   0.05066
OWat2   0.41390   0.46520   0.04730   0.93000   0.05066
OWat5   0.50000   0.43310   0.50000   1.05000   0.05066
OWat8   0.11650   0.11850   0.29780   0.96000   0.05066
H1   0.50660   0.29430   0.11500   0.09000   0.06333
H21   0.46210   0.41060   0.05290   0.61000   0.06333
H22   0.46110   0.41870   0.17780   0.33000   0.06333
H5   0.45290   0.46340   0.38720   0.53000   0.06333
H81   0.06580   0.08170   0.37550   0.48000   0.06333
H82   0.13670   0.16060   0.40770   0.96000   0.06333
H83   0.10080   0.17870   0.19300   0.96000   0.06333