data_global _chemical_name_mineral 'Liebenbergite' loop_ _publ_author_name 'Lager G A' 'Meagher E P' _journal_name_full 'American Mineralogist' _journal_volume 63 _journal_year 1978 _journal_page_first 365 _journal_page_last 377 _publ_section_title ; High-temperature structural study of six olivines T = 600 deg C, synthetic Ni2SiO4 ; _database_code_amcsd 0000644 _chemical_formula_sum 'Ni2 Si O4' _cell_length_a 4.760 _cell_length_b 10.179 _cell_length_c 5.951 _cell_angle_alpha 90 _cell_angle_beta 90 _cell_angle_gamma 90 _cell_volume 288.338 _exptl_crystal_density_diffrn 4.825 _symmetry_space_group_name_H-M 'P b n m' loop_ _space_group_symop_operation_xyz 'x,y,z' 'x,y,1/2-z' '-x,-y,1/2+z' '1/2+x,1/2-y,1/2+z' '1/2-x,1/2+y,1/2-z' '1/2-x,1/2+y,z' '1/2+x,1/2-y,-z' '-x,-y,-z' loop_ _atom_site_label _atom_site_fract_x _atom_site_fract_y _atom_site_fract_z Ni1 0.00000 0.00000 0.00000 Ni2 0.99220 0.27460 0.25000 Si 0.42760 0.09410 0.25000 O1 0.76930 0.09300 0.25000 O2 0.21630 0.44590 0.25000 O3 0.27780 0.16300 0.03280 loop_ _atom_site_aniso_label _atom_site_aniso_U_11 _atom_site_aniso_U_22 _atom_site_aniso_U_33 _atom_site_aniso_U_12 _atom_site_aniso_U_13 _atom_site_aniso_U_23 Ni1 0.01194 0.01522 0.01005 -0.00123 -0.00100 -0.00246 Ni2 0.01435 0.01155 0.01274 0.00025 0.00000 0.00000 Si 0.00620 0.00840 0.01184 0.00196 0.00000 0.00000 O1 0.01240 0.01837 0.01417 -0.00025 0.00000 0.00000 O2 0.01963 0.00945 0.01166 0.00614 0.00000 0.00000 O3 0.01699 0.01837 0.01633 0.00123 -0.00129 0.00153