data_global _chemical_name_mineral 'Ominelite' loop_ _publ_author_name 'Dzikowski T J' 'Groat L A' 'Grew E S' _journal_name_full 'American Mineralogist' _journal_volume 92 _journal_year 2007 _journal_page_first 863 _journal_page_last 872 _publ_section_title ; The geometric effects of VFe2+ for VMg substitution on the crystal structures of the grandidierite-ominelite series Sample: ominelite ; _database_code_amcsd 0004355 _chemical_formula_sum 'Fe Al3 B Si O9' _cell_length_a 10.363 _cell_length_b 11.129 _cell_length_c 5.769 _cell_angle_alpha 90 _cell_angle_beta 90 _cell_angle_gamma 90 _cell_volume 665.338 _exptl_crystal_density_diffrn 3.191 _symmetry_space_group_name_H-M 'P b n m' 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,1/2+z' '1/2-x,1/2+y,1/2-z' '1/2-x,1/2+y,z' '1/2+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_U_iso_or_equiv Fe 0.09578 0.21908 0.25000 0.00710 Al1 0.00000 0.00000 0.00000 0.00490 Al2 0.50000 0.00000 0.00000 0.00530 Al3 0.22669 0.44840 0.25000 0.00470 B 0.25090 0.00030 0.75000 0.00560 Si 0.43501 0.26359 0.25000 0.00510 O1 0.27760 0.29090 0.25000 0.00830 O2 0.11740 0.01930 0.25000 0.00570 O3 0.12100 -0.00440 0.75000 0.00700 O4 0.47410 0.12180 0.25000 0.00700 O5 0.54630 0.09640 0.75000 0.00560 O6 -0.00668 0.16967 -0.02380 0.00790 O7 0.18078 0.50114 -0.04520 0.00750 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 Fe 0.00850 0.00630 0.00660 -0.00174 0.00000 0.00000 Al1 0.00490 0.00580 0.00390 0.00030 -0.00010 0.00000 Al2 0.00430 0.00760 0.00410 -0.00020 0.00000 0.00080 Al3 0.00400 0.00630 0.00390 -0.00030 0.00000 0.00000 B 0.00520 0.00770 0.00400 0.00050 0.00000 0.00000 Si 0.00580 0.00470 0.00500 -0.00010 0.00000 0.00000 O1 0.00530 0.00730 0.01230 0.00110 0.00000 0.00000 O2 0.00560 0.00690 0.00450 0.00040 0.00000 0.00000 O3 0.00460 0.01060 0.00580 -0.00030 0.00000 0.00000 O4 0.00920 0.00540 0.00620 0.00100 0.00000 0.00000 O5 0.00630 0.00530 0.00520 -0.00010 0.00000 0.00000 O6 0.01110 0.00630 0.00630 -0.00040 -0.00210 0.00020 O7 0.00490 0.01290 0.00460 0.00020 0.00000 0.00080