data_global _chemical_name_mineral 'Strontioborite' loop_ _publ_author_name 'Brovkin A A' 'Zayakina N V' 'Brovkina V S' _journal_name_full 'Soviet Physics Crystallography' _journal_volume 20 _journal_year 1975 _journal_page_first 563 _journal_page_last 566 _publ_section_title ; Crystal structure of strontioborite Sr[B8O11(OH)4] ; _database_code_amcsd 0015571 _chemical_formula_sum 'Sr B8 O15 H4' _cell_length_a 9.909 _cell_length_b 8.13 _cell_length_c 7.623 _cell_angle_alpha 90 _cell_angle_beta 108.4 _cell_angle_gamma 90 _cell_volume 582.714 _exptl_crystal_density_diffrn 2.383 _symmetry_space_group_name_H-M 'P 1 21 1' loop_ _space_group_symop_operation_xyz 'x,y,z' '-x,1/2+y,-z' loop_ _atom_site_label _atom_site_fract_x _atom_site_fract_y _atom_site_fract_z _atom_site_U_iso_or_equiv Sr 0.28040 0.10000 0.11490 0.00393 B1 0.47800 0.60600 0.38500 0.01140 B2 0.01800 0.43700 0.02400 0.00507 B3 0.28100 0.48400 0.11100 0.00507 B4 0.48400 0.43600 0.01400 0.00253 B5 0.64300 0.19600 0.09400 0.01393 B6 0.91000 0.18800 0.10400 0.00127 B7 0.72300 0.60400 0.39000 0.00253 B8 0.86100 0.19700 0.41100 0.00253 O1 0.75900 0.12300 0.02700 0.00380 O2 0.53200 0.09300 0.08400 0.01267 O3 0.60000 0.34700 0.00900 0.00760 O4 0.00500 0.09600 0.04300 0.00887 O5 0.33500 0.58000 0.29300 0.01267 O-H6 0.21200 0.07700 0.42400 0.01393 O7 0.16000 0.39500 0.11800 0.00380 O8 0.58000 0.61500 0.31400 0.00633 O-H9 0.48900 0.14900 0.42400 0.01140 O10 0.38400 0.37500 0.07700 0.00633 O11 0.71500 0.21400 0.30900 0.00760 O12 0.94900 0.19600 0.30300 0.00633 O-H13 0.08500 0.67500 0.41100 0.02913 O-H14 0.79600 0.56800 0.25900 0.02406 O15 0.90700 0.35800 0.03100 0.00507