data_global _chemical_name_mineral 'Lizardite' loop_ _publ_author_name 'Mellini M' 'Zanazzi P F' _journal_name_full 'European Journal of Mineralogy' _journal_volume 1 _journal_year 1989 _journal_page_first 13 _journal_page_last 19 _publ_section_title ; Effects of pressure on the structure of lizardite-1T Sample: at P = 12.5 kbar ; _database_code_amcsd 0006339 _chemical_compound_source 'Val Sissone' _chemical_formula_sum 'Mg2.79 Fe.15 Al.22 Si1.84 O9 H4' _cell_length_a 5.316 _cell_length_b 5.316 _cell_length_c 7.150 _cell_angle_alpha 90 _cell_angle_beta 90 _cell_angle_gamma 120 _cell_volume 174.987 _exptl_crystal_density_diffrn 2.674 _symmetry_space_group_name_H-M 'P 3 1 m' loop_ _space_group_symop_operation_xyz 'x,y,z' 'x-y,-y,z' '-y,x-y,z' 'y,x,z' '-x+y,-x,z' '-x,-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 Mg 0.33700 0.00000 0.45700 0.93000 0.03200 Fe 0.33700 0.00000 0.45700 0.05000 0.03200 Al 0.33700 0.00000 0.45700 0.02000 0.03200 Si 0.33333 0.66667 0.06700 0.92000 0.00800 Al 0.33333 0.66667 0.06700 0.08000 0.00800 O1 0.33333 0.66667 0.29100 1.00000 0.00100 O2 0.00000 0.51300 -0.01700 1.00000 0.00600 O3 0.00000 0.66800 0.58700 1.00000 0.03300 O4 0.00000 0.00000 0.27000 1.00000 0.00300 H3 0.64000 0.00000 0.71000 1.00000 0.04000 H4 0.00000 0.00000 0.11000 1.00000 0.04000