#------------------------------------------------------------------------------ #$Date: 2008-03-10 10:25:41 +0200 (Mon, 10 Mar 2008) $ #$Revision: 255 $ #$URL: file:///home/coder/svn-repositories/cod/cif/9/9003991.cif $ #------------------------------------------------------------------------------ # # This file is available in the Crystallography Open Database (COD), # http://www.crystallography.net/ # # All data on this site have been placed in the public domain by the # contributors. # data_9003991 loop_ _publ_author_name 'Burt J B' 'Ross N L' 'Angel R J' 'Koch M' _publ_section_title ; Equations of state and structures of andalusite to 9.8 GPa and sillimanite to 8.5 GPa Locality: Minas Gerais, Brazil Sample: P = 1.474 GPa ; _journal_name_full 'American Mineralogist' _journal_page_first 319 _journal_page_last 326 _journal_volume 91 _journal_year 2006 _chemical_formula_sum 'Al2 Si O5' _chemical_name_mineral Andalusite _symmetry_space_group_name_H-M 'P n n m' _cell_angle_alpha 90 _cell_angle_beta 90 _cell_angle_gamma 90 _cell_length_a 7.7568 _cell_length_b 7.87268 _cell_length_c 5.54488 _cell_volume 338.608 loop_ _symmetry_equiv_pos_as_xyz x,y,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,1/2+z 1/2+x,1/2-y,1/2-z x,y,-z -x,-y,z -x,-y,-z loop_ _atom_site_label _atom_site_fract_x _atom_site_fract_y _atom_site_fract_z _atom_site_U_iso_or_equiv Al1 0.00000 0.00000 0.24198 0.00367 Al2 0.37040 0.13868 0.50000 0.00393 Si 0.24640 0.25148 0.00000 0.00355 OA 0.42170 0.36300 0.50000 0.00400 OB 0.42570 0.36150 0.00000 0.00456 OC 0.10180 0.40040 0.00000 0.00887 OD 0.23020 0.13261 0.23950 0.00570