data_global _chemical_name_mineral 'Gagarinite-(Ce)' loop_ _publ_author_name 'Sciberras M J' 'Leverett P' 'Williams P A' 'Hibbs D E' 'Roberts A C' 'Grice J D' _journal_name_full 'The Canadian Mineralogist' _journal_volume 49 _journal_year 2011 _journal_page_first 1111 _journal_page_last 1114 _publ_section_title ; The single-crystal X-ray structure of gagarinite-(Ce) ; _database_code_amcsd 0018644 _chemical_compound_source 'Strange Lake deposit, Quebec-Labrador, Canada' _chemical_formula_sum 'Ce.275 La.143 Nd.099 Y.044 Gd.033 Sm.011 Dy.006 Ca.45 Na.45 F3' _cell_length_a 6.0861 _cell_length_b 6.0861 _cell_length_c 3.6810 _cell_angle_alpha 90 _cell_angle_beta 90 _cell_angle_gamma 120 _cell_volume 118.080 _exptl_crystal_density_diffrn 4.775 _symmetry_space_group_name_H-M 'P 63/m' loop_ _space_group_symop_operation_xyz 'x,y,z' '-x+y,-x,1/2-z' 'x-y,x,1/2+z' 'y,-x+y,-z' '-y,x-y,z' 'x,y,1/2-z' '-x,-y,1/2+z' 'x-y,x,-z' '-x+y,-x,z' '-y,x-y,1/2-z' 'y,-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 Ce 0.66667 0.33333 0.25000 0.27500 0.00600 La 0.66667 0.33333 0.25000 0.14300 0.00600 Nd 0.66667 0.33333 0.25000 0.09900 0.00600 Y 0.66667 0.33333 0.25000 0.04400 0.00600 Gd 0.66667 0.33333 0.25000 0.03300 0.00600 Sm 0.66667 0.33333 0.25000 0.01100 0.00600 Dy 0.66667 0.33333 0.25000 0.00600 0.00600 Ca 0.66667 0.33333 0.25000 0.45000 0.00600 Na 0.00000 0.00000 0.00000 0.45000 0.01200 F 0.30460 0.38900 0.25000 1.00000 0.00800 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 Ce 0.00700 0.00700 0.00300 0.00350 0.00000 0.00000 La 0.00700 0.00700 0.00300 0.00350 0.00000 0.00000 Nd 0.00700 0.00700 0.00300 0.00350 0.00000 0.00000 Y 0.00700 0.00700 0.00300 0.00350 0.00000 0.00000 Gd 0.00700 0.00700 0.00300 0.00350 0.00000 0.00000 Sm 0.00700 0.00700 0.00300 0.00350 0.00000 0.00000 Dy 0.00700 0.00700 0.00300 0.00350 0.00000 0.00000 Ca 0.00700 0.00700 0.00300 0.00350 0.00000 0.00000 Na 0.00200 0.00200 0.03300 0.00100 0.00000 0.00000 F 0.00800 0.00800 0.00800 0.00400 0.00000 0.00000