data_global _chemical_name_mineral 'Boracite' loop_ _publ_author_name 'Mehmel M' _journal_name_full 'Fortschritte der Mineralogie' _journal_volume 17 _journal_year 1932 _journal_page_first 436 _journal_page_last 438 _publ_section_title ; Kristallstrukturelle Untersuchungen an Borazit Note: this is the high-temperature modification _cod_database_code 1011284 ; _database_code_amcsd 0018134 _chemical_compound_source 'Synthetic' _chemical_formula_sum 'Mg3 B7 O13 Cl' _cell_length_a 12.1 _cell_length_b 12.1 _cell_length_c 12.1 _cell_angle_alpha 90 _cell_angle_beta 90 _cell_angle_gamma 90 _cell_volume 1771.561 _exptl_crystal_density_diffrn 2.940 _symmetry_space_group_name_H-M 'F -4 3 c' loop_ _space_group_symop_operation_xyz 'x,y,z' 'x,1/2+y,1/2+z' '1/2+x,y,1/2+z' '1/2+x,1/2+y,z' '-z,x,-y' '-z,1/2+x,1/2-y' '1/2-z,x,1/2-y' '1/2-z,1/2+x,-y' '-y,z,-x' '-y,1/2+z,1/2-x' '1/2-y,z,1/2-x' '1/2-y,1/2+z,-x' '-x,y,-z' '-x,1/2+y,1/2-z' '1/2-x,y,1/2-z' '1/2-x,1/2+y,-z' 'x,-z,1/2-y' 'x,1/2-z,-y' '1/2+x,-z,-y' '1/2+x,1/2-z,1/2-y' 'z,-y,1/2-x' 'z,1/2-y,-x' '1/2+z,-y,-x' '1/2+z,1/2-y,1/2-x' 'y,-x,1/2-z' 'y,1/2-x,-z' '1/2+y,-x,-z' '1/2+y,1/2-x,1/2-z' 'x,z,1/2+y' 'x,1/2+z,+y' '1/2+x,z,+y' '1/2+x,1/2+z,1/2+y' 'z,y,1/2+x' 'z,1/2+y,+x' '1/2+z,y,+x' '1/2+z,1/2+y,1/2+x' 'y,x,1/2+z' 'y,1/2+x,+z' '1/2+y,x,+z' '1/2+y,1/2+x,1/2+z' '-z,-x,y' '-z,1/2-x,1/2+y' '1/2-z,-x,1/2+y' '1/2-z,1/2-x,y' '-y,-z,x' '-y,1/2-z,1/2+x' '1/2-y,-z,1/2+x' '1/2-y,1/2-z,x' '-x,-y,z' '-x,1/2-y,1/2+z' '1/2-x,-y,1/2+z' '1/2-x,1/2-y,z' 'z,-x,-y' 'z,1/2-x,1/2-y' '1/2+z,-x,1/2-y' '1/2+z,1/2-x,-y' 'y,-z,-x' 'y,1/2-z,1/2-x' '1/2+y,-z,1/2-x' '1/2+y,1/2-z,-x' 'x,-y,-z' 'x,1/2-y,1/2-z' '1/2+x,-y,1/2-z' '1/2+x,1/2-y,-z' '-x,z,1/2-y' '-x,1/2+z,-y' '1/2-x,z,-y' '1/2-x,1/2+z,1/2-y' '-z,y,1/2-x' '-z,1/2+y,-x' '1/2-z,y,-x' '1/2-z,1/2+y,1/2-x' '-y,x,1/2-z' '-y,1/2+x,-z' '1/2-y,x,-z' '1/2-y,1/2+x,1/2-z' '-x,-z,1/2+y' '-x,1/2-z,+y' '1/2-x,-z,+y' '1/2-x,1/2-z,1/2+y' '-z,-y,1/2+x' '-z,1/2-y,+x' '1/2-z,-y,+x' '1/2-z,1/2-y,1/2+x' '-y,-x,1/2+z' '-y,1/2-x,+z' '1/2-y,-x,+z' '1/2-y,1/2-x,1/2+z' 'z,x,y' 'z,1/2+x,1/2+y' '1/2+z,x,1/2+y' '1/2+z,1/2+x,y' 'y,z,x' 'y,1/2+z,1/2+x' '1/2+y,z,1/2+x' '1/2+y,1/2+z,x' loop_ _atom_site_label _atom_site_fract_x _atom_site_fract_y _atom_site_fract_z Mg 0.25000 0.00000 0.00000 B1 0.25000 0.25000 0.00000 B2 0.36670 0.36670 0.36670 O1 0.25000 0.25000 0.25000 O2 0.30800 0.33600 0.45800 Cl 0.00000 0.00000 0.00000