data_global _chemical_name_mineral 'Hibonite' loop_ _publ_author_name 'Bermanec V' 'Holtstam D' 'Sturman D' 'Criddle A J' 'Back M E' 'Scavnicar S' _journal_name_full 'The Canadian Mineralogist' _journal_volume 34 _journal_year 1996 _journal_page_first 1287 _journal_page_last 1297 _publ_section_title ; Nezilovite, a new member of the magnetoplumbite group, and the crystal chemistry of mognetoplumbite and hibonite ; _database_code_amcsd 0005520 _chemical_formula_sum 'Ca.85 Ce.06 La.03 Nd.01 Mg.53 Al10.66 Fe.3 Si.06 Ti.5 O19' _cell_length_a 5.613 _cell_length_b 5.613 _cell_length_c 22.285 _cell_angle_alpha 90 _cell_angle_beta 90 _cell_angle_gamma 120 _cell_volume 608.042 _exptl_crystal_density_diffrn 3.796 _symmetry_space_group_name_H-M 'P 63/m m c' loop_ _space_group_symop_operation_xyz 'x,y,z' '-x,-x+y,1/2+z' 'x,x-y,1/2-z' '-x+y,-x,1/2-z' 'x-y,x,1/2+z' '-y,-x,z' 'y,x,-z' 'y,-x+y,-z' '-y,x-y,z' 'x-y,-y,1/2+z' '-x+y,y,1/2-z' 'x,y,1/2-z' '-x,-y,1/2+z' 'x,x-y,z' '-x,-x+y,-z' 'x-y,x,-z' '-x+y,-x,z' 'y,x,1/2+z' '-y,-x,1/2-z' '-y,x-y,1/2-z' 'y,-x+y,1/2+z' '-x+y,y,z' 'x-y,-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 Ca 0.66667 0.33333 0.25000 0.85000 0.03546 Ce 0.66667 0.33333 0.25000 0.06000 0.03546 La 0.66667 0.33333 0.25000 0.03000 0.03546 Nd 0.66667 0.33333 0.25000 0.01000 0.03546 Mg 0.66667 0.33333 0.25000 0.05000 0.03546 AlM1 0.00000 0.00000 0.00000 1.00000 0.00633 AlM2 0.00000 0.00000 0.23790 0.50000 0.01393 FeM3 0.33333 0.66667 0.02710 0.15000 0.00887 MgM3 0.33333 0.66667 0.02710 0.24000 0.00887 AlM3 0.33333 0.66667 0.02710 0.61000 0.00887 SiM4 0.66667 0.33333 -0.18890 0.03000 0.01013 TiM4 0.66667 0.33333 -0.18890 0.25000 0.01013 AlM4 0.66667 0.33333 -0.18890 0.72000 0.01013 AlM5 0.16790 0.33580 -0.10710 1.00000 0.00507 O1 0.00000 0.00000 0.14810 1.00000 0.00887 O2 0.33333 0.66667 -0.05650 1.00000 0.01013 O3 0.36200 0.18100 0.75000 1.00000 0.02913 O4 0.15310 0.30630 0.05200 1.00000 0.01267 O5 0.50430 -0.50430 0.35080 1.00000 0.01140