data_global _chemical_name_mineral 'Derbylite' loop_ _publ_author_name 'Moore P B' 'Araki T' _journal_name_full 'Neues Jahrbuch fur Mineralogie, Abhandlungen' _journal_volume 126 _journal_year 1976 _journal_page_first 292 _journal_page_last 303 _publ_section_title ; Derbylite, Fe3+4Ti4+3Sb3+O13(OH), a novel close-packed oxide structure ; _database_code_amcsd 0014704 _chemical_compound_source 'Ouro Preto, Minas Gerias, Brazil' _chemical_formula_sum 'Fe4 Ti3 Sb O14 H' _cell_length_a 7.160 _cell_length_b 14.347 _cell_length_c 4.970 _cell_angle_alpha 90 _cell_angle_beta 104.61 _cell_angle_gamma 90 _cell_volume 494.033 _exptl_crystal_density_diffrn 4.798 _symmetry_space_group_name_H-M 'P 1 21/m 1' loop_ _space_group_symop_operation_xyz 'x,y,z' 'x,1/2-y,z' '-x,1/2+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 Fe3+M2 0.50703 0.12966 0.24701 1.00000 0.00836 Ti4+M3 0.80760 0.05875 0.86895 0.57000 0.00811 Fe3+M3 0.80760 0.05875 0.86895 0.43000 0.00811 Fe3+M4 0.81866 -0.06483 0.37565 0.57000 0.00823 Ti4+M4 0.81866 -0.06483 0.37565 0.43000 0.00823 Ti4+M1 0.49422 0.25000 0.74515 1.00000 0.00887 Sb3+ 0.07653 0.25000 0.05329 1.00000 0.00709 O1 0.35160 0.25000 0.02520 1.00000 0.00925 O2 0.67800 -0.04620 -0.01140 1.00000 0.00747 O3 0.66080 0.15230 -0.03340 1.00000 0.00899 O4 0.00060 0.14990 0.76450 1.00000 0.00861 O5 0.00040 0.03750 0.25080 1.00000 0.00697 O6 0.68070 0.04380 0.48690 1.00000 0.00747 O7 0.33560 0.15280 0.51570 1.00000 0.00887 O-H8 0.64080 0.25000 0.46570 1.00000 0.00709