data_global
_chemical_name_mineral 'Laumontite'
loop_
_publ_author_name
'Lee Y'
'Hriljac J A'
'Vogt T'
_journal_name_full 'Physics and Chemistry of Minerals'
_journal_volume 31 
_journal_year 2004
_journal_page_first 421
_journal_page_last 428
_publ_section_title
;
 Pressure-induced migration of zeolitic water in laumontite
 Sample: Pleasant Valley, Connecticut, NMNH R4159; P = 1.1 GPa
;
_database_code_amcsd 0008871
_chemical_formula_sum 'Ca2 Al4 Si8 O33 H18'
_cell_length_a 14.8486
_cell_length_b 13.1211
_cell_length_c 7.4774
_cell_angle_alpha 90
_cell_angle_beta 110.001
_cell_angle_gamma 90
_cell_volume 1368.956
_exptl_crystal_density_diffrn      2.326
_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_U_iso_or_equiv
Ca   0.27000   0.50000   0.72500   0.03800
Al   0.12930   0.30950   0.72840   0.03800
Si1   0.23980   0.38130   0.15760   0.03800
Si2   0.07430   0.38690   0.31720   0.03800
O1   0.26600   0.50000   0.20800   0.03800
O2   0.21200   0.36500   0.93100   0.03800
O3   0.13400   0.38900   0.54500   0.03800
O4   0.14600   0.34900   0.20900   0.03800
O5   0.33100   0.31500   0.28400   0.03800
O6   0.03600   0.50000   0.24100   0.03800
O7   0.01300   0.30600   0.73700   0.03800
Wat1   0.00000   0.15400   0.00000   0.03800
Wat2   0.41400   0.50000   0.03100   0.03800
Wat5   0.50000   0.50000   0.50000   0.03800
Wat8   0.13900   0.12300   0.37700   0.03800