data_global _chemical_name_mineral 'Plumboferrite' loop_ _publ_author_name 'Holtstam D' 'Norrestam R' 'Sjodin A' _journal_name_full 'American Mineralogist' _journal_volume 80 _journal_year 1995 _journal_page_first 1065 _journal_page_last 1072 _publ_section_title ; Plumboferrite: New mineralogical data and atomic arrangement ; _database_code_amcsd 0001760 _chemical_formula_sum 'Pb2 Fe11 O18.19' _cell_length_a 5.9356 _cell_length_b 5.9356 _cell_length_c 23.576 _cell_angle_alpha 90 _cell_angle_beta 90 _cell_angle_gamma 120 _cell_volume 719.333 _exptl_crystal_density_diffrn 6.093 _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 Pb1 0.71470 -0.71470 0.25575 0.16667 0.00800 Pb2 0.04168 0.08336 0.25265 0.16667 0.00540 Fe1 0.00000 0.00000 0.00000 1.00000 0.00420 Fe2 0.33333 0.66667 0.02627 1.00000 0.00370 Fe3 0.33333 0.66667 0.18468 1.00000 0.01350 Fe4 0.16905 0.33810 -0.10614 1.00000 0.00410 O1 0.00000 0.00000 0.14550 1.00000 0.00470 O2 0.33333 0.66667 -0.05350 1.00000 0.00370 O3 0.18710 0.37430 0.25000 0.73000 0.04250 O4 0.15660 0.31330 0.05150 1.00000 0.00490 O5 0.50310 -0.50310 0.14820 1.00000 0.00490