data_global _chemical_name_mineral 'Euclase' loop_ _publ_author_name 'Biscoe J' 'Warren B' _journal_name_full 'Zeitschrift fur Kristallographie' _journal_volume 86 _journal_year 1933 _journal_page_first 292 _journal_page_last 297 _publ_section_title ; The structure of Euclase H Be Al Si O5 _cod_database_code 1011072 ; _database_code_amcsd 0017971 _chemical_formula_sum 'Be Al Si O5' _cell_length_a 4.62 _cell_length_b 14.24 _cell_length_c 4.75 _cell_angle_alpha 90 _cell_angle_beta 79.73 _cell_angle_gamma 90 _cell_volume 307.490 _exptl_crystal_density_diffrn 3.112 _symmetry_space_group_name_H-M 'P 1 21/c 1' loop_ _space_group_symop_operation_xyz 'x,y,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 Be1 0.50000 -0.20000 0.20000 Al1 0.03000 -0.06000 0.25000 Si1 0.47000 0.10000 0.15000 O1 0.22000 0.05000 0.39000 O2 0.26000 -0.03000 -0.17000 O3 0.54000 0.19000 0.37000 O4 -0.28000 -0.15000 0.11000 O5 0.22000 -0.17000 0.31000