data_global _chemical_name_mineral 'Meridianiite' loop_ _publ_author_name 'Fortes A D' 'Wood I G' 'Knight K S' _journal_name_full 'Physics and Chemistry of Minerals' _journal_volume 35 _journal_year 2008 _journal_page_first 207 _journal_page_last 221 _publ_section_title ; The crystal structure and thermal expansion tensor of MgSO4-11D2O (meridianiite) determined by neutron powder diffraction Note: T = 4.2 K ; _database_code_amcsd 0009133 _chemical_compound_source 'Synthetic' _chemical_formula_sum 'Mg S O15 D22' _cell_length_a 6.7275 _cell_length_b 6.7814 _cell_length_c 17.3180 _cell_angle_alpha 88.206 _cell_angle_beta 89.447 _cell_angle_gamma 62.608 _cell_volume 701.142 _exptl_crystal_density_diffrn 1.614 _symmetry_space_group_name_H-M 'P -1' loop_ _space_group_symop_operation_xyz 'x,y,z' '-x,-y,-z' loop_ _atom_site_label _atom_site_fract_x _atom_site_fract_y _atom_site_fract_z _atom_site_U_iso_or_equiv Mg1 0.00000 0.00000 0.00000 0.00450 Mg2 0.00000 0.00000 0.50000 0.00450 S 0.39050 0.33080 0.20240 0.00590 O1 0.31410 0.33260 0.12300 0.00590 O2 0.21600 0.44310 0.25440 0.00590 O3 0.52690 0.07820 0.22700 0.00590 O4 0.55780 0.42320 0.19990 0.00590 Ow1 0.65780 0.16830 0.00690 0.00790 Ow2 0.99910 -0.27450 0.05510 0.00790 Ow3 0.04980 0.10480 0.10370 0.00790 Ow4 0.14920 -0.11140 0.39520 0.00790 Ow5 0.79650 -0.15110 0.48610 0.00790 Ow6 0.75350 0.28700 0.44750 0.00790 Ow7 0.30780 0.39760 0.41070 0.00790 Ow8 0.59990 -0.24110 0.11980 0.00790 Ow9 0.55570 -0.14070 0.36140 0.00790 Ow10 0.83150 0.43850 0.30760 0.00790 Ow11 0.99630 -0.08920 0.24640 0.00790 D1a 0.56430 0.23340 0.04980 0.01640 D1b 0.56690 0.18760 -0.03420 0.01640 D2a 0.11350 -0.40660 0.07340 0.01640 D2b 0.85530 -0.27110 0.07600 0.01640 D3a 0.04360 0.04370 0.15440 0.01640 D3b 0.13120 0.19080 0.11010 0.01640 D4a 0.29890 -0.12250 0.38470 0.01640 D4b 0.07870 -0.08860 0.34510 0.01640 D5a 0.77390 -0.24030 0.52400 0.01640 D5b 0.70990 -0.14270 0.44200 0.01640 D6a 0.79370 0.33390 0.39900 0.01640 D6b 0.60960 0.31050 0.43850 0.01640 D7a 0.28460 0.40870 0.35560 0.01640 D7b 0.23880 0.55880 0.42730 0.01640 D8a 0.56440 -0.13120 0.15650 0.01640 D8b 0.59620 -0.37110 0.14450 0.01640 D9a 0.53360 -0.04180 0.31640 0.01640 D9b 0.65840 -0.29340 0.34160 0.01640 D10a 0.74280 0.41290 0.26790 0.01640 D10b 0.96890 0.41680 0.28690 0.01640 D11a 0.06290 -0.25020 0.23930 0.01640 D11b 0.83800 -0.03590 0.23870 0.01640