data_global _chemical_name_mineral 'Hollandite' loop_ _publ_author_name 'Post J E' 'Von Dreele R B' 'Buseck P R' _journal_name_full 'Acta Crystallographica, Section B' _journal_volume 38 _journal_year 1982 _journal_page_first 1056 _journal_page_last 1065 _publ_section_title ; Symmetry and cation displacements in hollandites: structure refinements of hollandite, cryptomelane and priderite Note: Anisotropic displacement factors from ICSD ; _database_code_amcsd 0009759 _chemical_compound_source 'Stuor Njuoskes, Sweden' _chemical_formula_sum 'Ba.34 Pb.08 Mn3.24 Fe.64 Al.12 O8' _cell_length_a 10.026 _cell_length_b 2.8782 _cell_length_c 9.729 _cell_angle_alpha 90 _cell_angle_beta 91.03 _cell_angle_gamma 90 _cell_volume 280.703 _exptl_crystal_density_diffrn 4.830 _symmetry_space_group_name_H-M 'I 1 2/m 1' loop_ _space_group_symop_operation_xyz 'x,y,z' '1/2+x,1/2+y,1/2+z' 'x,-y,z' '1/2+x,1/2-y,1/2+z' '-x,y,-z' '1/2-x,1/2+y,1/2-z' '-x,-y,-z' '1/2-x,1/2-y,1/2-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 Ba 0.00000 0.00000 0.00000 0.34000 0.01400 Pb 0.00000 0.20200 0.00000 0.04000 0.03600 Mn4+1 0.85183 0.00000 0.33266 0.75000 0.00490 Mn3+1 0.85183 0.00000 0.33266 0.06000 0.00490 Fe1 0.85183 0.00000 0.33266 0.16000 0.00490 Al1 0.85183 0.00000 0.33266 0.03000 0.00490 Mn4+2 0.33670 0.00000 0.15345 0.75000 0.00500 Mn3+2 0.33670 0.00000 0.15345 0.06000 0.00500 Fe2 0.33670 0.00000 0.15345 0.16000 0.00500 Al2 0.33670 0.00000 0.15345 0.03000 0.00500 O1 0.65830 0.00000 0.30220 1.00000 0.00880 O2 0.65520 0.00000 0.04140 1.00000 0.00840 O3 0.29400 0.00000 0.35020 1.00000 0.00880 O4 0.04150 0.00000 0.32220 1.00000 0.00790 loop_ _atom_site_aniso_label _atom_site_aniso_U_11 _atom_site_aniso_U_22 _atom_site_aniso_U_33 _atom_site_aniso_U_12 _atom_site_aniso_U_13 _atom_site_aniso_U_23 Ba 0.01370 0.02000 0.01440 0.00000 0.00000 0.00000 Pb 0.03100 0.05900 0.02900 0.00060 0.00000 0.00000 Mn4+1 0.00630 0.00260 0.00740 -0.00010 0.00000 0.00000 Mn3+1 0.00630 0.00260 0.00740 -0.00010 0.00000 0.00000 Fe1 0.00630 0.00260 0.00740 -0.00010 0.00000 0.00000 Al1 0.00630 0.00260 0.00740 -0.00010 0.00000 0.00000 Mn4+2 0.00710 0.00280 0.00640 0.00060 0.00000 0.00000 Mn3+2 0.00710 0.00280 0.00640 0.00060 0.00000 0.00000 Fe2 0.00710 0.00280 0.00640 0.00060 0.00000 0.00000 Al2 0.00710 0.00280 0.00640 0.00060 0.00000 0.00000 O1 0.01000 0.00710 0.00910 0.00000 0.00000 0.00000 O2 0.01280 0.00560 0.00800 0.00060 0.00000 0.00000 O3 0.00920 0.00740 0.00960 -0.00030 0.00000 0.00000 O4 0.00680 0.00530 0.01330 0.00090 0.00000 0.00000