data_global _chemical_name_mineral 'Larderellite' loop_ _publ_author_name 'Merlino S' 'Sartori F' _journal_name_full 'Acta Crystallographica, Section B' _journal_volume 25 _journal_year 1969 _journal_page_first 2264 _journal_page_last 2270 _publ_section_title ; The crystal structure of lardellite, NH4B5O7(OH)2*H2O ; _database_code_amcsd 0009364 _chemical_compound_source 'Synthetic' _chemical_formula_sum 'N B5 O10 H4' _cell_length_a 9.47 _cell_length_b 7.63 _cell_length_c 11.65 _cell_angle_alpha 90 _cell_angle_beta 97.08 _cell_angle_gamma 90 _cell_volume 835.365 _exptl_crystal_density_diffrn 1.845 _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 _atom_site_U_iso_or_equiv NH4 0.32190 0.43930 0.26580 0.02444 B1 0.56560 0.30910 0.07100 0.01659 B2 0.74870 0.51110 0.04480 0.02153 B3 0.70000 0.45330 0.24310 0.01165 B4 0.63140 0.59350 0.41920 0.01583 B5 0.82460 0.39090 0.44180 0.01039 O1 0.45620 0.20120 0.02190 0.01355 O2 0.63690 0.40370 -0.00360 0.01608 O-h3 0.82150 0.59420 -0.03570 0.01596 O4 0.59970 0.32320 0.18790 0.01697 O5 0.77360 0.54260 0.15830 0.01355 O6 0.62050 0.57790 0.30470 0.01279 O7 0.80690 0.36140 0.32750 0.01583 O8 0.73500 0.50050 0.49260 0.01545 O-h9 0.93220 0.30670 0.50880 0.01786 Ow10 0.95520 0.11280 0.22950 0.02406 H1 0.05600 0.08900 0.26000 0.06333 H2 0.89900 0.20800 0.26700 0.06333 H3 0.94100 0.33800 0.59700 0.06333 H4 0.91100 0.67100 -0.02600 0.06333