data_global _chemical_name_mineral 'Aeschynite-(Y)' loop_ _publ_author_name 'Bonazzi P' 'Menchetti S' _journal_name_full 'European Journal of Mineralogy' _journal_volume 11 _journal_year 1999 _journal_page_first 1043 _journal_page_last 1049 _publ_section_title ; Crystal chemistry of aeschynite-(Y) from the Western Alps: residual electron density on difference-Fourier map Sample: TR1 ; _database_code_amcsd 0006807 _chemical_compound_source 'western Alps' _chemical_formula_sum 'Y.639 Ce.005 Pr.001 Nd.011 Sm.01 Gd.068 Dy.065 Er.034 Yb.025 Th.06 U.004 Ca.01 (Ti1.95 Nb.05) W.03 O6' _cell_length_a 10.862 _cell_length_b 7.483 _cell_length_c 5.150 _cell_angle_alpha 90 _cell_angle_beta 90 _cell_angle_gamma 90 _cell_volume 418.594 _exptl_crystal_density_diffrn 4.868 _symmetry_space_group_name_H-M 'P n m a' loop_ _space_group_symop_operation_xyz 'x,y,z' 'x,1/2-y,z' '-x,1/2+y,-z' '1/2-x,1/2+y,1/2+z' '1/2+x,1/2-y,1/2-z' '1/2+x,y,1/2-z' '1/2-x,-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 YA 0.45030 0.25000 0.03330 0.63900 0.01500 CeA 0.45030 0.25000 0.03330 0.00500 0.01500 PrA 0.45030 0.25000 0.03330 0.00100 0.01500 NdA 0.45030 0.25000 0.03330 0.01100 0.01500 SmA 0.45030 0.25000 0.03330 0.01000 0.01500 GdA 0.45030 0.25000 0.03330 0.06800 0.01500 DyA 0.45030 0.25000 0.03330 0.06500 0.01500 ErA 0.45030 0.25000 0.03330 0.03400 0.01500 YbA 0.45030 0.25000 0.03330 0.02500 0.01500 ThA 0.45030 0.25000 0.03330 0.06000 0.01500 UA 0.45030 0.25000 0.03330 0.00400 0.01500 CaA 0.45030 0.25000 0.03330 0.01000 0.01500 TiB 0.35930 0.51370 0.54460 0.97500 0.02040 NbB 0.35930 0.51370 0.54460 0.02500 0.02040 WC 0.17700 0.25000 0.60300 0.03000 0.02300 O1 0.28680 0.43540 0.87780 1.00000 0.02400 O2 0.52620 0.45680 0.73730 1.00000 0.02500 O3 0.61900 0.25000 0.31140 1.00000 0.02400 O4 0.35060 0.25000 0.43610 1.00000 0.02300