data_global _chemical_name_mineral 'Sanbornite' loop_ _publ_author_name 'Douglass R M' _journal_name_full 'American Mineralogist' _journal_volume 43 _journal_year 1958 _journal_page_first 517 _journal_page_last 536 _publ_section_title ; The crystal structure of sanbornite, BaSi2O5 ; _database_code_amcsd 0000085 _chemical_formula_sum 'Ba Si2 O5' _cell_length_a 4.63 _cell_length_b 7.69 _cell_length_c 13.53 _cell_angle_alpha 90 _cell_angle_beta 90 _cell_angle_gamma 90 _cell_volume 481.732 _exptl_crystal_density_diffrn 3.771 _symmetry_space_group_name_H-M 'P c m n' 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 Ba 0.28700 0.25000 0.04500 Si 0.36300 0.05000 0.31700 O1 0.48000 0.25000 0.34800 O2 0.14600 0.06000 0.22000 O3 0.22800 0.97000 0.41600