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 after decompression ; _database_code_amcsd 0006966 _chemical_compound_source 'King's Mountain, North Carolina, USA' _chemical_formula_sum 'Li Si2 Al O7 H2' _cell_length_a 8.605 _cell_length_b 4.957 _cell_length_c 7.606 _cell_angle_alpha 89.93 _cell_angle_beta 114.40 _cell_angle_gamma 89.85 _cell_volume 295.455 _exptl_crystal_density_diffrn 2.294 _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 0.31200 0.36300 0.15100 0.02200 Li2 0.70200 0.86600 0.87800 0.02200 Si1 0.10720 0.86440 0.09900 0.00930 Si2 0.10380 0.80060 0.50490 0.00990 Si22 0.89250 0.29910 0.48800 0.01010 Si23 0.61970 0.37470 0.06480 0.00840 Al13 0.38080 0.87450 0.93910 0.00840 Al21 0.90030 0.36470 0.90860 0.00950 O11 0.26430 0.74050 0.06160 0.01330 O12 0.08640 0.18240 0.04560 0.01320 O13 0.15990 0.82860 0.32870 0.01960 O14 0.05530 0.48580 0.51440 0.02120 O15 0.26120 0.89240 0.69560 0.01960 O16 0.45240 0.19650 0.03110 0.01270 O17 0.40890 0.32500 0.43910 0.03100 O21 0.73160 0.24470 0.95880 0.01220 O22 0.93130 0.70500 0.97580 0.01440 O23 0.84220 0.32780 0.66560 0.02080 O24 0.93700 0.98790 0.46440 0.02020 O25 0.73170 0.39250 0.29680 0.01870 O26 0.56170 0.67850 0.98470 0.01290 O27 0.60100 0.82200 0.59210 0.03200 H11 0.33000 0.34000 0.48000 0.04000 H12 0.45000 0.23000 0.45000 0.01000 H21 0.68000 0.80000 0.56000 0.13000 H22 0.56000 0.65000 0.74000 0.08000