data_global _chemical_name_mineral 'Scolecite' loop_ _publ_author_name 'Comodi P' 'Gatta G D' 'Zanazzi P F' _journal_name_full 'European Journal of Mineralogy' _journal_volume 14 _journal_year 2002 _journal_page_first 567 _journal_page_last 574 _publ_section_title ; High-pressure structural behaviour of scolecite Sample: P = .0001 GPa (after compression) Note: y-coordinate of O5 altered to match bond lengths ; _database_code_amcsd 0006936 _chemical_formula_sum 'Ca Si3 Al2 O13 H6' _cell_length_a 6.542 _cell_length_b 18.842 _cell_length_c 9.863 _cell_angle_alpha 90 _cell_angle_beta 109.89 _cell_angle_gamma 90 _cell_volume 1143.234 _exptl_crystal_density_diffrn 2.279 _symmetry_space_group_name_H-M 'C 1 c 1' loop_ _space_group_symop_operation_xyz 'x,y,z' '1/2+x,1/2+y,z' 'x,-y,1/2+z' '1/2+x,1/2-y,1/2+z' loop_ _atom_site_label _atom_site_fract_x _atom_site_fract_y _atom_site_fract_z _atom_site_U_iso_or_equiv Ca 0.16100 0.14330 0.05120 0.01220 Si1 0.50000 0.37076 0.00000 0.00720 Si2 0.22920 0.33187 0.19960 0.00700 Si3 0.53950 0.08247 0.33070 0.00660 Al1 0.93390 0.46211 0.09910 0.00750 Al2 0.35490 0.21648 0.43340 0.00670 O1 0.54120 0.03160 0.46070 0.01330 O2 0.44770 0.04550 0.17380 0.01090 O3 0.38300 0.15160 0.31540 0.01170 O4 0.11530 0.19950 0.46790 0.01280 O5 0.35290 0.29930 0.35790 0.00910 O6 0.08580 0.27130 0.09020 0.01110 O7 0.41470 0.35860 0.13500 0.01350 O8 0.07590 0.39570 0.21390 0.01260 O9 0.79000 0.10950 0.35700 0.01180 O10 0.66020 0.43690 0.03420 0.01260 Wat1 0.89060 0.08070 0.10750 0.03100 Wat2 0.90770 0.32590 0.43930 0.03500 Wat3 0.57850 0.44490 0.37430 0.02700