#------------------------------------------------------------------------------ #$Date: 2015-01-27 21:58:39 +0200 (Tue, 27 Jan 2015) $ #$Revision: 130149 $ #$URL: file:///home/coder/svn-repositories/cod/cif/1/01/09/1010957.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_1010957 loop_ _publ_author_name 'Barth, F W' 'Posnjak, E' _publ_section_title ; Silicate structures of the cristobalite type. The crystal structure of $-alpha-carnegieite (Na Al Si O4) ; _journal_coden_ASTM ZEKGAX _journal_name_full ; Zeitschrift fuer Kristallographie, Kristallgeometrie, Kristallphysik, Kristallchemie (-144,1977) ; _journal_page_first 135 _journal_page_last 141 _journal_volume 81 _journal_year 1932 _chemical_compound_source 'alpha - artificial' _chemical_formula_structural 'Na Al Si O4' _chemical_formula_sum 'Al Na O4 Si' _chemical_name_mineral Carnegieite _chemical_name_systematic 'Sodium aluminium silicate' _space_group_IT_number 198 _symmetry_cell_setting cubic _symmetry_Int_Tables_number 198 _symmetry_space_group_name_Hall 'P 2ac 2ab 3' _symmetry_space_group_name_H-M 'P 21 3' _cell_angle_alpha 90 _cell_angle_beta 90 _cell_angle_gamma 90 _cell_formula_units_Z 4 _cell_length_a 7.37 _cell_length_b 7.37 _cell_length_c 7.37 _cell_volume 400.3 _cod_database_code 1010957 loop_ _symmetry_equiv_pos_as_xyz x,y,z y,z,x z,x,y 1/2+x,1/2-y,-z 1/2+y,1/2-z,-x 1/2+z,1/2-x,-y -x,1/2+y,1/2-z -y,1/2+z,1/2-x -z,1/2+x,1/2-y 1/2-x,-y,1/2+z 1/2-y,-z,1/2+x 1/2-z,-x,1/2+y loop_ _atom_site_label _atom_site_type_symbol _atom_site_symmetry_multiplicity _atom_site_Wyckoff_symbol _atom_site_fract_x _atom_site_fract_y _atom_site_fract_z _atom_site_occupancy _atom_site_attached_hydrogens _atom_site_calc_flag Na1 Na1+ 4 a 0.744 0.744 0.744 1. 0 d Al1 Al3+ 4 a 0.258 0.258 0.258 1. 0 d Si1 Si4+ 4 a 0. 0. 0. 1. 0 d O1 O2- 4 a 0.125 0.125 0.125 1. 0 d O2 O2- 12 b 0.658 0.644 0.0556 1. 0 d loop_ _atom_type_symbol _atom_type_oxidation_number Na1+ 1.000 Al3+ 3.000 Si4+ 4.000 O2- -2.000