data_global _chemical_name_mineral 'Tantalite-(Mn)' loop_ _publ_author_name 'Klein S' 'Weitzel H' _journal_name_full 'Acta Crystallographica, Section A' _journal_volume 32 _journal_year 1976 _journal_page_first 587 _journal_page_last 591 _publ_section_title ; Magnetische struktur von Mn(Nb0.5Ta0.5)2O6, manganotantalit Note: columbite structure ; _database_code_amcsd 0009323 _chemical_formula_sum 'Mn (Nb Ta) O6' _cell_length_a 14.418 _cell_length_b 5.76 _cell_length_c 5.099 _cell_angle_alpha 90 _cell_angle_beta 90 _cell_angle_gamma 90 _cell_volume 423.460 _exptl_crystal_density_diffrn 6.663 _symmetry_space_group_name_H-M 'P b c n' loop_ _space_group_symop_operation_xyz 'x,y,z' 'x,-y,1/2+z' '-x,y,1/2-z' '1/2-x,1/2+y,z' '1/2+x,1/2-y,-z' '1/2+x,1/2+y,1/2-z' '1/2-x,1/2-y,1/2+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 Mn 0.00000 0.17690 0.25000 1.00000 0.00722 Nb 0.16275 0.32330 0.76430 0.50000 0.00431 Ta 0.16275 0.32330 0.76430 0.50000 0.00431 O1 0.09930 0.40190 0.44220 1.00000 0.00633 O2 0.08280 0.11590 0.90220 1.00000 0.00773 O3 0.25620 0.12660 0.59130 1.00000 0.00659