data_global _chemical_name_mineral 'Hulsite' loop_ _publ_author_name 'Konnert J A' 'Appleman D E' 'Clark J R' 'Finger L W' 'Kato T' 'Miura Y' _journal_name_full 'American Mineralogist' _journal_volume 61 _journal_year 1976 _journal_page_first 116 _journal_page_last 122 _publ_section_title ; Crystal structure and cation distribution of hulsite, a tin-iron borate ; _database_code_amcsd 0000497 _chemical_formula_sum 'Sn.2 Fe2.63 Mg1.12 B2 O10' _cell_length_a 10.695 _cell_length_b 3.102 _cell_length_c 5.432 _cell_angle_alpha 90 _cell_angle_beta 94.2 _cell_angle_gamma 90 _cell_volume 179.727 _exptl_crystal_density_diffrn 3.506 _symmetry_space_group_name_H-M 'P 1 2/m 1' loop_ _space_group_symop_operation_xyz 'x,y,z' 'x,-y,z' '-x,y,-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 Sn 0.00000 0.00000 0.00000 0.20000 0.00177 Fe1 0.00000 0.00000 0.00000 0.27000 0.00177 Fe2 0.50000 0.00000 0.50000 0.50000 0.00139 Fe3 0.50000 0.00000 0.00000 0.50000 0.00266 Fe4 0.00000 0.50000 0.50000 0.36000 0.00139 Mg4 0.00000 0.50000 0.50000 0.16000 0.00139 Fe5 0.27470 0.50000 0.21870 0.50000 0.00215 Mg5 0.27470 0.50000 0.21870 0.48000 0.00215 B1 0.24100 0.00000 0.71100 1.00000 0.00228 O1 0.11200 0.00000 0.69700 1.00000 0.00532 O2 0.30500 0.00000 0.50200 1.00000 0.00747 O3 0.30500 0.00000 0.94300 1.00000 0.00380 O4 0.09100 0.50000 0.18700 1.00000 0.00469 O5 0.46900 0.50000 0.24600 1.00000 0.00405