data_global _chemical_name_mineral 'Tetrawickmanite' loop_ _publ_author_name 'Lafuente B' 'Yang H' 'Downs R T' _journal_name_full 'Acta Crystallographica, Section E' _journal_volume 71 _journal_year 2015 _journal_page_first 234 _journal_page_last 237 _publ_section_title ; Crystal structure of tetrawickmanite, Mn2+Sn4+(OH)6 ; _database_code_amcsd 0020227 _chemical_compound_source 'Langban, Sweden' _chemical_formula_sum 'Mn Sn O6 H6' _cell_length_a 7.8655 _cell_length_b 7.8655 _cell_length_c 7.7938 _cell_angle_alpha 90 _cell_angle_beta 90 _cell_angle_gamma 90 _cell_volume 482.172 _exptl_crystal_density_diffrn 3.798 _symmetry_space_group_name_H-M 'P 42/n' loop_ _space_group_symop_operation_xyz 'x,y,z' 'y,1/2-x,1/2-z' '-y,1/2+x,1/2+z' '1/2+x,1/2+y,-z' '1/2-x,1/2-y,z' '1/2-y,x,1/2-z' '1/2+y,-x,1/2+z' '-x,-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 Mn 0.50000 0.00000 0.00000 1.00000 0.01017 Sn 0.50000 0.00000 0.50000 1.00000 0.00790 O1 0.74065 -0.05652 0.58940 1.00000 0.01330 O2 0.42512 -0.23929 0.56923 1.00000 0.01380 O3 0.43079 0.08165 0.74014 1.00000 0.01130 H1 0.77200 -0.17100 0.51700 0.50000 0.03000 H2 0.74000 -0.02500 0.69900 0.50000 0.03000 H3 0.29700 -0.29200 0.52500 0.50000 0.03000 H4 0.45500 -0.25200 0.70700 0.50000 0.03000 H5 0.46500 0.21500 0.74300 1.00000 0.03000 loop_ _atom_site_aniso_label _atom_site_aniso_U_11 _atom_site_aniso_U_22 _atom_site_aniso_U_33 _atom_site_aniso_U_12 _atom_site_aniso_U_13 _atom_site_aniso_U_23 Mn 0.01020 0.01020 0.01012 0.00040 0.00047 0.00021 Sn 0.00751 0.00801 0.00817 -0.00042 0.00044 0.00029 O1 0.00980 0.01740 0.01280 -0.00020 -0.00110 0.00140 O2 0.01470 0.00910 0.01760 0.00010 0.00090 0.00120 O3 0.01450 0.01070 0.00870 -0.00020 0.00050 -0.00060