data_global _chemical_name_mineral 'Gowerite' loop_ _publ_author_name 'Konnert J A' 'Clark J R' 'Christ C L' _journal_name_full 'American Mineralogist' _journal_volume 57 _journal_year 1972 _journal_page_first 381 _journal_page_last 396 _publ_section_title ; Gowerite, CaB5O8(OH).B(OH)3.3H2O: Crystal structure and comparison with related borates ; _database_code_amcsd 0000273 _chemical_formula_sum 'Ca B6 O15 H10' _cell_length_a 12.882 _cell_length_b 16.360 _cell_length_c 6.558 _cell_angle_alpha 90 _cell_angle_beta 121.62 _cell_angle_gamma 90 _cell_volume 1176.915 _exptl_crystal_density_diffrn 2.004 _symmetry_space_group_name_H-M 'P 1 21/a 1' loop_ _space_group_symop_operation_xyz 'x,y,z' '1/2+x,1/2-y,z' '1/2-x,1/2+y,-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 Ca 0.19080 0.25210 0.08790 0.01849 B1 0.63100 0.23900 0.57700 0.02280 B2 0.44000 0.30900 0.49200 0.02533 B3 0.47700 0.27400 0.17200 0.02406 B4 0.34500 0.31300 0.73100 0.02533 B5 0.41800 0.43900 0.64700 0.02533 B6 0.23200 0.07100 0.06100 0.04053 O1 0.23800 0.29300 0.74100 0.03040 O2 0.55400 0.26200 0.65000 0.02786 O3 0.59500 0.25100 0.34100 0.03166 O4 0.40000 0.29500 0.24000 0.03166 O5 0.46800 0.39700 0.54800 0.03166 O6 0.34200 0.28200 0.52300 0.02660 O7 0.45500 0.27900 -0.05100 0.03166 O8 0.35600 0.40300 0.74200 0.03293 O-H9 0.42900 0.52400 0.66500 0.04559 O-H10 0.18300 0.10900 0.17100 0.04433 O-H11 0.28800 0.12700 -0.01500 0.05066 O-H12 0.22900 -0.01000 0.02100 0.05319 Wat1 0.13100 0.39000 0.06200 0.05066 Wat2 0.08700 0.45300 0.41800 0.11145 Wat3 0.38400 0.10900 0.71100 0.06713