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 = 0.6 GPa ; _database_code_amcsd 0008870 _chemical_formula_sum 'Ca2 Al4 Si8 O33 H18' _cell_length_a 14.8795 _cell_length_b 13.1442 _cell_length_c 7.5078 _cell_angle_alpha 90 _cell_angle_beta 109.920 _cell_angle_gamma 90 _cell_volume 1380.515 _exptl_crystal_density_diffrn 2.307 _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 0.73500 0.03600 Al 0.12780 0.30770 0.72820 0.03600 Si1 0.24070 0.38030 0.15870 0.03600 Si2 0.07670 0.38710 0.32330 0.03600 O1 0.26500 0.50000 0.19700 0.03600 O2 0.20900 0.36000 0.93300 0.03600 O3 0.13600 0.38900 0.55000 0.03600 O4 0.15000 0.34900 0.22000 0.03600 O5 0.33400 0.31700 0.28400 0.03600 O6 0.03700 0.50000 0.25000 0.03600 O7 0.01100 0.30700 0.73100 0.03600 Wat1 0.00000 0.15300 0.00000 0.03600 Wat2 0.40900 0.50000 0.01300 0.03600 Wat5 0.50000 0.50000 0.50000 0.03600 Wat8 0.14600 0.12200 0.36600 0.03600