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 = 2.4 GPa ; _database_code_amcsd 0008873 _chemical_formula_sum 'Ca Al2 Si4 O16.5 H9' _cell_length_a 14.7204 _cell_length_b 13.1084 _cell_length_c 7.4080 _cell_angle_alpha 90 _cell_angle_beta 110.512 _cell_angle_gamma 90 _cell_volume 1338.825 _exptl_crystal_density_diffrn 2.379 _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 0.27700 0.50000 0.70900 1.00000 0.01300 Al 0.13080 0.31110 0.73480 1.00000 0.01300 Si1 0.24440 0.38150 0.16640 1.00000 0.01300 Si2 0.08150 0.38660 0.32000 1.00000 0.01300 O1 0.26300 0.50000 0.23000 1.00000 0.01300 O2 0.21500 0.37000 0.93500 1.00000 0.01300 O3 0.13900 0.39000 0.55100 1.00000 0.01300 O4 0.15400 0.33900 0.21900 1.00000 0.01300 O5 0.34000 0.31600 0.28700 1.00000 0.01300 O6 0.04800 0.50000 0.23600 1.00000 0.01300 O7 0.01300 0.31300 0.74000 1.00000 0.01300 Wat1 0.00200 0.17500 0.06500 0.50000 0.01300 Wat2 0.43800 0.50000 0.15300 1.00000 0.01300 Wat5 0.50000 0.57600 0.50000 0.50000 0.01300 Wat8 0.12200 0.12600 0.36900 1.00000 0.01300