data_global _chemical_name_mineral 'Brandholzite' loop_ _publ_author_name 'Beintema J' _journal_name_full 'Proceedings of the Koninklijke Nederlandse Academie van Wetenschappen' _journal_volume 39 _journal_year 1936 _journal_page_first 241 _journal_page_last 252 _publ_section_title ; On the crystal-structure of magnesium- and nickelantimonate. _cod_database_code 1010069 ; _database_code_amcsd 0017004 _chemical_formula_sum 'Mg Sb2 O' _cell_length_a 16.079 _cell_length_b 16.079 _cell_length_c 9.841 _cell_angle_alpha 90 _cell_angle_beta 90 _cell_angle_gamma 120 _cell_volume 2203.373 _exptl_crystal_density_diffrn 1.283 _symmetry_space_group_name_H-M 'P -3 1 m' loop_ _space_group_symop_operation_xyz 'x,y,z' 'x-y,-y,z' 'y,-x+y,-z' '-y,-x,-z' '-x+y,-x,z' '-x,-x+y,z' '-x,-y,-z' '-x+y,y,-z' '-y,x-y,z' 'y,x,z' 'x-y,x,-z' 'x,x-y,-z' loop_ _atom_site_label _atom_site_fract_x _atom_site_fract_y _atom_site_fract_z Mg1 0.33333 0.00000 0.00000 Sb1 0.00000 0.00000 0.00000 Sb2 0.00000 0.00000 0.50000 Sb3 0.33333 0.66667 0.00000 Sb4 0.33333 0.66667 0.50000 Sb5 0.33333 0.00000 0.50000 O1 0.11110 0.00000 0.12500