#------------------------------------------------------------------------------ #$Date: 2013-03-29 12:50:04 +0200 (Fri, 29 Mar 2013) $ #$Revision: 77877 $ #$URL: file:///home/coder/svn-repositories/cod/cif/9/00/37/9003756.cif $ #------------------------------------------------------------------------------ # # This file is available in the Crystallography Open Database (COD), # http://www.crystallography.net/. The original data for this entry # were provided the American Mineralogist Crystal Structure Database, # http://rruff.geo.arizona.edu/AMS/amcsd.php # # The file may be used within the scientific community so long as # proper attribution is given to the journal article from which the # data were obtained. # data_9003756 loop_ _publ_author_name 'Yamanaka, T.' 'Komatsu, Y.' 'Sugahara, M.' 'Nagai, T.' _publ_section_title ; Structure change of MgSiO3, MgGeO3, and MgTiO3 ilmenites under compression Sample: P = 8.1 GPa ; _journal_name_full 'American Mineralogist' _journal_page_first 1301 _journal_page_last 1307 _journal_volume 90 _journal_year 2005 _chemical_formula_structural MgGeO3 _chemical_formula_sum 'Ge Mg O3' _space_group_IT_number 148 _symmetry_space_group_name_Hall '-R 3' _symmetry_space_group_name_H-M 'R -3 :H' _cell_angle_alpha 90 _cell_angle_beta 90 _cell_angle_gamma 120 _cell_length_a 4.880 _cell_length_b 4.880 _cell_length_c 13.502 _cell_volume 278.464 _diffrn_ambient_pressure 8.1e+06 _exptl_crystal_density_diffrn 5.185 _[local]_cod_cif_authors_sg_H-M 'R -3' _[local]_cod_chemical_formula_sum_orig 'Mg Ge O3' _cod_database_code 9003756 _amcsd_database_code AMCSD#0003874 loop_ _symmetry_equiv_pos_as_xyz x,y,z 2/3+x,1/3+y,1/3+z 1/3+x,2/3+y,2/3+z y,-x+y,-z 2/3+y,1/3-x+y,1/3-z 1/3+y,2/3-x+y,2/3-z -x+y,-x,z 2/3-x+y,1/3-x,1/3+z 1/3-x+y,2/3-x,2/3+z -x,-y,-z 2/3-x,1/3-y,1/3-z 1/3-x,2/3-y,2/3-z -y,x-y,z 2/3-y,1/3+x-y,1/3+z 1/3-y,2/3+x-y,2/3+z x-y,x,-z 2/3+x-y,1/3+x,1/3-z 1/3+x-y,2/3+x,2/3-z loop_ _atom_site_label _atom_site_fract_x _atom_site_fract_y _atom_site_fract_z _atom_site_U_iso_or_equiv Mg 0.00000 0.00000 0.35870 0.00469 Ge 0.00000 0.00000 0.15350 0.00241 O 0.31830 0.02620 0.24450 0.00241