data_global _chemical_name_mineral 'Billwiseite' loop_ _publ_author_name 'Hawthorne F C' 'Cooper M A' 'Ball N A' 'Abdu Y A' 'Cerny P' 'Camara F' 'Laurs B M' _journal_name_full 'The Canadian Mineralogist' _journal_volume 50 _journal_year 2012 _journal_page_first 805 _journal_page_last 814 _publ_section_title ; Billwiseite, ideally Sb3+5(Nb,Ta)3WO18, a new oxide mineral species from the Stak Nala Pegmatite, Nanga Parbat - Haramosh Massif, Pakistan: description and crystal structure ; _database_code_amcsd 0019765 _chemical_compound_source 'the Stak Nala Pegmatite, Nanga Parbat - Haramosh Massif, Pakistan' _chemical_formula_sum 'Sb5 (Nb1.32 Ta1.28 Ti.16 W1.24) O18' _cell_length_a 54.116 _cell_length_b 4.9143 _cell_length_c 5.5482 _cell_angle_alpha 90 _cell_angle_beta 90.425 _cell_angle_gamma 90 _cell_volume 1475.460 _exptl_crystal_density_diffrn 6.692 _symmetry_space_group_name_H-M 'C 1 2/c 1' loop_ _space_group_symop_operation_xyz 'x,y,z' '1/2+x,1/2+y,z' 'x,-y,1/2+z' '1/2+x,1/2-y,1/2+z' '-x,y,1/2-z' '1/2-x,1/2+y,1/2-z' '-x,-y,-z' '1/2-x,1/2-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 Sb1 0.00000 0.19830 0.75000 1.00000 0.01390 Sb2 0.22152 -0.20656 0.32554 1.00000 0.01320 Sb3 0.10997 0.29999 0.72606 1.00000 0.01290 NbM1 0.05480 0.25442 0.13172 0.33000 0.00840 TaM1 0.05480 0.25442 0.13172 0.32000 0.00840 TiM1 0.05480 0.25442 0.13172 0.04000 0.00840 WM1 0.05480 0.25442 0.13172 0.31000 0.00840 NbM2 0.16463 0.23919 0.37332 0.33000 0.00750 TaM2 0.16463 0.23919 0.37332 0.32000 0.00750 TiM2 0.16463 0.23919 0.37332 0.04000 0.00750 WM2 0.16463 0.23919 0.37332 0.31000 0.00750 O1 0.12890 0.41300 0.40890 1.00000 0.01200 O2 0.02086 0.08700 0.08670 1.00000 0.01100 O3 0.06472 0.01300 0.36650 1.00000 0.01300 O4 0.23860 0.06800 0.12630 1.00000 0.01200 O5 0.08747 0.41300 0.07940 1.00000 0.01000 O6 0.15095 0.03560 0.66760 1.00000 0.01100 O7 0.19594 0.08500 0.42440 1.00000 0.01300 O8 0.17287 0.52100 0.63110 1.00000 0.01600 O9 0.04268 0.47700 0.83720 1.00000 0.01300 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 Sb1 0.01150 0.00870 0.02140 0.00000 0.00620 0.00000 Sb2 0.01610 0.01030 0.01330 -0.00560 0.00350 -0.00120 Sb3 0.01260 0.00960 0.01630 -0.00350 -0.00490 0.00140 NbM1 0.00600 0.00740 0.01160 -0.00060 0.00030 -0.00030 TaM1 0.00600 0.00740 0.01160 -0.00060 0.00030 -0.00030 TiM1 0.00600 0.00740 0.01160 -0.00060 0.00030 -0.00030 WM1 0.00600 0.00740 0.01160 -0.00060 0.00030 -0.00030 NbM2 0.00620 0.00690 0.00930 0.00070 -0.00038 0.00030 TaM2 0.00620 0.00690 0.00930 0.00070 -0.00038 0.00030 TiM2 0.00620 0.00690 0.00930 0.00070 -0.00038 0.00030 WM2 0.00620 0.00690 0.00930 0.00070 -0.00038 0.00030 O1 0.00200 0.01300 0.02000 0.00100 -0.00200 0.00100 O2 0.00500 0.01400 0.01500 -0.00200 -0.00200 -0.00200 O3 0.00800 0.01300 0.01700 0.00000 0.00200 0.01000 O4 0.00500 0.01700 0.01300 -0.00600 -0.00400 0.00100 O5 0.00600 0.00800 0.01500 -0.00500 0.00200 0.00200 O6 0.01100 0.00600 0.01700 0.00000 -0.00300 0.00200 O7 0.01200 0.01200 0.01500 0.00100 0.00100 -0.00200 O8 0.01200 0.01600 0.02000 0.00000 -0.00200 -0.00600 O9 0.00800 0.01700 0.01500 0.00200 -0.00200 0.00700