data_global _chemical_name_mineral 'Horvathite-(Y)' loop_ _publ_author_name 'Grice J D' 'Chao G Y' _journal_name_full 'The Canadian Mineralogist' _journal_volume 35 _journal_year 1997 _journal_page_first 743 _journal_page_last 749 _publ_section_title ; Horvathite-(Y), rare-earth fluorocarbonate, a new mineral species from Mont Saint-Hilaire, Quebec ; _database_code_amcsd 0005523 _chemical_compound_source 'Mont Saint-Hilaire, Quebec, Canada' _chemical_formula_sum 'Na Y C O3 F2' _cell_length_a 6.959 _cell_length_b 9.170 _cell_length_c 6.301 _cell_angle_alpha 90 _cell_angle_beta 90 _cell_angle_gamma 90 _cell_volume 402.092 _exptl_crystal_density_diffrn 3.467 _symmetry_space_group_name_H-M 'P m c n' loop_ _space_group_symop_operation_xyz 'x,y,z' '1/2-x,y,z' '1/2+x,-y,-z' '1/2+x,1/2+y,1/2-z' '1/2-x,1/2-y,1/2+z' 'x,1/2-y,1/2+z' '-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 Na 0.25000 0.21750 0.17110 0.02300 Y 0.75000 0.42143 -0.01305 0.00920 C 0.75000 0.05900 0.04010 0.01400 O1 0.25000 -0.18560 -0.13090 0.01900 O2 0.75000 0.45540 0.34210 0.02600 O3 0.25000 0.05080 -0.16250 0.02200 F 0.56070 0.63000 0.04200 0.01800