data_global _chemical_name_mineral 'Xenotime-(Er)' loop_ _publ_author_name 'Ni Y' 'Hughes J M' 'Mariano A N' _journal_name_full 'American Mineralogist' _journal_volume 80 _journal_year 1995 _journal_page_first 21 _journal_page_last 26 _publ_section_title ; Crystal chemistry of the monazite and xenotime structures ; _database_code_amcsd 0001710 _chemical_compound_source 'Synthetic' _chemical_formula_sum 'Er P O4' _cell_length_a 6.8508 _cell_length_b 6.8508 _cell_length_c 5.9968 _cell_angle_alpha 90 _cell_angle_beta 90 _cell_angle_gamma 90 _cell_volume 281.451 _exptl_crystal_density_diffrn 6.189 _symmetry_space_group_name_H-M 'I 41/a m d' loop_ _space_group_symop_operation_xyz 'x,y,z' '1/2+x,1/2+y,1/2+z' '1/4-y,3/4-x,1/4+z' '3/4-y,1/4-x,3/4+z' '1/4+y,3/4+x,1/4-z' '3/4+y,1/4+x,3/4-z' '1/4+y,3/4-x,1/4-z' '3/4+y,1/4-x,3/4-z' '1/4-y,3/4+x,1/4+z' '3/4-y,1/4+x,3/4+z' '1/2+x,-y,1/2+z' '+x,1/2-y,+z' '1/2-x,y,1/2-z' '-x,1/2+y,-z' '1/2+x,y,1/2-z' '+x,1/2+y,-z' '1/2-x,-y,1/2+z' '-x,1/2-y,+z' '1/4+y,1/4+x,3/4+z' '3/4+y,3/4+x,1/4+z' '1/4-y,1/4-x,3/4-z' '3/4-y,3/4-x,1/4-z' '1/4-y,1/4+x,3/4-z' '3/4-y,3/4+x,1/4-z' '1/4+y,1/4-x,3/4+z' '3/4+y,3/4-x,1/4+z' '-x,y,z' '1/2-x,1/2+y,1/2+z' 'x,-y,-z' '1/2+x,1/2-y,1/2-z' '-x,-y,-z' '1/2-x,1/2-y,1/2-z' loop_ _atom_site_label _atom_site_fract_x _atom_site_fract_y _atom_site_fract_z _atom_site_U_iso_or_equiv Er 0.00000 0.75000 0.12500 0.00514 P 0.00000 0.25000 0.37500 0.00608 O 0.00000 0.07430 0.21600 0.00823