data_global _chemical_name_mineral 'Bikitaite' loop_ _publ_author_name 'Comodi P' 'Gatta G D' 'Zanazzi P F' _journal_name_full 'European Journal of Mineralogy' _journal_volume 15 _journal_year 2003 _journal_page_first 247 _journal_page_last 255 _publ_section_title ; Effects of pressure on the structure of bikitaite P = 0.0001 GPa ; _database_code_amcsd 0006964 _chemical_compound_source 'King's Mountain, North Carolina, USA' _chemical_formula_sum 'Li Si2 Al O7 H2' _cell_length_a 8.607 _cell_length_b 4.956 _cell_length_c 7.601 _cell_angle_alpha 89.98 _cell_angle_beta 114.38 _cell_angle_gamma 89.98 _cell_volume 295.318 _exptl_crystal_density_diffrn 2.295 _symmetry_space_group_name_H-M 'P 1' loop_ _space_group_symop_operation_xyz '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 Li1 0.31400 0.36600 0.15300 0.01600 Li2 0.70300 0.86800 0.88000 0.01900 Si1 0.10700 0.86410 0.09950 0.00790 Si2 0.10380 0.80060 0.50490 0.00890 Si22 0.89240 0.29950 0.48810 0.00940 Si23 0.61960 0.37470 0.06500 0.00790 Al13 0.38050 0.87430 0.93930 0.00860 Al21 0.90040 0.36430 0.90890 0.00910 O11 0.26440 0.74000 0.06140 0.01210 O12 0.08630 0.18220 0.04540 0.01280 O13 0.15800 0.82800 0.32790 0.01840 O14 0.05420 0.48650 0.51450 0.01960 O15 0.26060 0.89160 0.69490 0.01820 O16 0.45230 0.19690 0.03050 0.01200 O17 0.41000 0.32500 0.43770 0.02900 O21 0.73110 0.24260 0.95920 0.01170 O22 0.93150 0.70540 0.97510 0.01320 O23 0.84080 0.32840 0.66480 0.02140 O24 0.93680 0.98630 0.46370 0.01880 O25 0.73210 0.39330 0.29680 0.01760 O26 0.56210 0.67720 0.98380 0.01210 O27 0.60080 0.82200 0.59240 0.03100 H11 0.35200 0.30000 0.48000 0.01000 H12 0.46000 0.19000 0.46000 0.04000 H21 0.69000 0.85000 0.53000 0.14000 H22 0.54000 0.72000 0.56000 0.04000