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 = 0.3 GPa
;
_database_code_amcsd 0008869
_chemical_formula_sum 'Ca2 Al4 Si8 O33 H18'
_cell_length_a 14.8913
_cell_length_b 13.1661
_cell_length_c 7.5284
_cell_angle_alpha 90
_cell_angle_beta 110.008
_cell_angle_gamma 90
_cell_volume 1386.935
_exptl_crystal_density_diffrn      2.296
_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
Ca   0.26700   0.50000   0.72600   1.00000   0.02600
Al   0.12750   0.31050   0.72930   1.00000   0.02600
Si1   0.24220   0.38210   0.15980   1.00000   0.02600
Si2   0.07920   0.38720   0.32600   1.00000   0.02600
O1   0.27000   0.50000   0.21000   1.00000   0.02600
O2   0.20600   0.36700   0.93300   1.00000   0.02600
O3   0.13900   0.39000   0.55200   1.00000   0.02600
O4   0.15200   0.34900   0.22200   1.00000   0.02600
O5   0.33400   0.31400   0.27900   1.00000   0.02600
O6   0.04000   0.50000   0.25100   1.00000   0.02600
O7   0.00900   0.30800   0.72400   1.00000   0.02600
Wat1   0.02400   0.15500   0.04600   0.50000   0.02600
Wat2   0.41300   0.50000   0.01100   1.00000   0.02600
Wat5   0.50000   0.50000   0.50000   1.00000   0.02600
Wat8   0.14000   0.12200   0.36500   1.00000   0.02600