data_global _chemical_name_mineral 'Monazite-(Sm)' 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 0001703 _chemical_compound_source 'Synthetic' _chemical_formula_sum 'Sm P O4' _cell_length_a 6.6818 _cell_length_b 6.8877 _cell_length_c 6.3653 _cell_angle_alpha 90 _cell_angle_beta 103.86 _cell_angle_gamma 90 _cell_volume 284.416 _exptl_crystal_density_diffrn 5.729 _symmetry_space_group_name_H-M 'P 1 21/n 1' loop_ _space_group_symop_operation_xyz 'x,y,z' '1/2+x,1/2-y,1/2+z' '1/2-x,1/2+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_U_iso_or_equiv Sm 0.28153 0.15638 0.09813 0.00289 P 0.30340 0.16180 0.61300 0.00317 O1 0.24990 0.00200 0.44050 0.00722 O2 0.38220 0.33410 0.50080 0.00722 O3 0.47480 0.10250 0.81020 0.00709 O4 0.12170 0.21250 0.71130 0.00722