data_global _chemical_name_mineral 'Forsterite' loop_ _publ_author_name 'Bocchio R' 'Brajkovic A' 'Pilati T' _journal_name_full 'Neues Jahrbuch fur Mineralogie, Monatshefte' _journal_volume 7 _journal_year 1986 _journal_page_first 313 _journal_page_last 324 _publ_section_title ; Crystal chemistry of the olivines in the peridotites from the Ivrea- Verbano Zone (Western Italian Alps) Note: Sample Mo895 ; _database_code_amcsd 0020388 _chemical_compound_source 'Baldissero, Ivrea-Verbano Zone, Western Italian Alps' _chemical_formula_sum '(Mg1.8 Fe.2) Si O4' _cell_length_a 4.759 _cell_length_b 10.227 _cell_length_c 5.995 _cell_angle_alpha 90 _cell_angle_beta 90 _cell_angle_gamma 90 _cell_volume 291.778 _exptl_crystal_density_diffrn 3.346 _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 _atom_site_occupancy Mg1 0.00000 0.00000 0.00000 0.89700 Fe1 0.00000 0.00000 0.00000 0.10300 Mg2 -0.01010 0.27776 0.25000 0.90300 Fe2 -0.01010 0.27776 0.25000 0.09700 Si 0.42680 0.09434 0.25000 1.00000 O1 0.76600 0.09170 0.25000 1.00000 O2 0.27960 -0.05260 0.25000 1.00000 O3 0.27840 0.16338 0.03320 1.00000 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 Mg1 0.00410 0.00830 0.00630 -0.00020 -0.00040 -0.00110 Fe1 0.00410 0.00830 0.00630 -0.00020 -0.00040 -0.00110 Mg2 0.00510 0.00520 0.00730 -0.00010 0.00000 0.00000 Fe2 0.00510 0.00520 0.00730 -0.00010 0.00000 0.00000 Si 0.00220 0.00510 0.00570 0.00000 0.00000 0.00000 O1 0.00270 0.00790 0.00680 0.00080 0.00000 0.00000 O2 0.00460 0.00500 0.00820 0.00030 0.00000 0.00000 O3 0.00480 0.00720 0.00670 0.00020 0.00000 0.00120