data_global _chemical_name_mineral 'Bikitaite' loop_ _publ_author_name 'Ferro O' 'Quartieri S' 'Vezzalini G' 'Ceriani C' 'Fois E' 'Gamba A' 'Cruciani G' _journal_name_full 'American Mineralogist' _journal_volume 89 _journal_year 2004 _journal_page_first 94 _journal_page_last 101 _publ_section_title ; Dehydration dynamics of bikitaite: I. In situ synchrotron powder X-ray diffraction study Sample: T = 400 C ; _database_code_amcsd 0003190 _chemical_compound_source 'Bikita, Zimbabwe' _chemical_formula_sum 'Li Al Si2 O6.385 H.77' _cell_length_a 8.6269 _cell_length_b 4.9871 _cell_length_c 7.5718 _cell_angle_alpha 89.765 _cell_angle_beta 114.097 _cell_angle_gamma 90.160 _cell_volume 297.372 _exptl_crystal_density_diffrn 2.156 _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_occupancy _atom_site_U_iso_or_equiv Li1 0.31400 0.35600 0.16000 1.00000 0.08992 Li2 0.71800 0.84400 0.91400 1.00000 0.08992 Al13 0.38400 0.85900 0.93300 1.00000 0.04559 Al21 0.88900 0.33600 0.89900 1.00000 0.04559 Si11 0.10200 0.85100 0.07800 1.00000 0.07092 Si12 0.10380 0.80060 0.50490 1.00000 0.07092 Si22 0.88300 0.29200 0.48400 1.00000 0.07092 Si23 0.61700 0.33400 0.07400 1.00000 0.07092 O11 0.24600 0.70600 0.02000 1.00000 0.05826 O12 0.08500 0.17900 0.02900 1.00000 0.05826 O13 0.12400 0.81900 0.30100 1.00000 0.06333 O14 0.02400 0.52200 0.53800 1.00000 0.06333 O15 0.26600 0.88200 0.69500 1.00000 0.06333 O16 0.43600 0.18800 0.01400 1.00000 0.05826 O21 0.72300 0.24200 0.95100 1.00000 0.05319 O22 0.93600 0.67300 0.95200 1.00000 0.05319 O23 0.81300 0.34300 0.65000 1.00000 0.06333 O24 0.94600 0.98500 0.48900 1.00000 0.06333 O25 0.73600 0.41900 0.29600 1.00000 0.06333 O26 0.55000 0.62900 0.97500 1.00000 0.05319 Wat17 0.52600 0.33300 0.41600 0.36000 0.18998 Wat27 0.63300 0.79300 0.62500 0.41000 0.18998