data_global _chemical_name_mineral 'Liberite' loop_ _publ_author_name 'Han-ching C' _journal_name_full 'Kexue Tongbao' _journal_volume 17 _journal_year 1966 _journal_page_first 425 _journal_page_last 428 _publ_section_title ; The crystal structure of liberite ; _database_code_amcsd 0014174 _chemical_formula_sum 'Li2 Be Si O4' _cell_length_a 4.68 _cell_length_b 4.95 _cell_length_c 6.13 _cell_angle_alpha 90 _cell_angle_beta 90.33 _cell_angle_gamma 90 _cell_volume 142.005 _exptl_crystal_density_diffrn 2.689 _symmetry_space_group_name_H-M 'P 1 n 1' loop_ _space_group_symop_operation_xyz 'x,y,z' '1/2+x,-y,1/2+z' loop_ _atom_site_label _atom_site_fract_x _atom_site_fract_y _atom_site_fract_z Li1 0.00000 0.16200 0.56000 Li2 0.50000 0.32500 0.73500 Be 0.52000 0.33000 0.24500 Si 0.00000 0.17000 0.00000 O1 0.35500 0.16000 0.05000 O2 0.42000 0.15000 0.45500 O3 0.42000 0.65000 0.23500 O4 0.84500 0.34500 0.20500