data_global _chemical_name_mineral 'Fergusonite-beta-(Y)' loop_ _publ_author_name 'Weitzel H' 'Schrocke H' _journal_name_full 'Zeitschrift fur Kristallographie' _journal_volume 152 _journal_year 1980 _journal_page_first 69 _journal_page_last 82 _publ_section_title ; Kristallstrukturverfeinerungen von euxenit, Y(Nb0.5Ti0.5)2O6, und M-fergusonit, YNbO4 ; _database_code_amcsd 0010828 _chemical_formula_sum 'Y Nb O4' _cell_length_a 7.6454 _cell_length_b 10.9994 _cell_length_c 5.3172 _cell_angle_alpha 90 _cell_angle_beta 138.42 _cell_angle_gamma 90 _cell_volume 296.757 _exptl_crystal_density_diffrn 5.502 _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_U_iso_or_equiv Y 0.00000 0.37630 0.25000 0.00570 Nb 0.00000 0.85780 0.25000 0.00722 O1 0.21170 0.78180 0.21450 0.00621 O2 0.24770 0.95990 0.65330 0.00393