#------------------------------------------------------------------------------
#$Date: 2008-03-10 10:25:41 +0200 (Mon, 10 Mar 2008) $
#$Revision: 255 $
#$URL: file:///home/coder/svn-repositories/cod/cif/9/9004547.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_9004547
loop_
_publ_author_name
'Mitchell R H'
'Burns P C'
'Chakhmouradian A R'
_publ_section_title
;
 The crystal structures of loparite-(Ce)
 Sample: Loparite K
;
_journal_name_full               'The Canadian Mineralogist'
_journal_page_first              145
_journal_page_last               152
_journal_volume                  38
_journal_year                    2000
_chemical_formula_sum
'Na.54 La.09 Ce.17 Pr.01 Nd.03 Ca.09 Sr.04 (Ti.76 Nb.23 Ta.01) O3'
_chemical_name_mineral           Loparite-(Ce)
_symmetry_space_group_name_H-M   'P b n m'
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_length_a                   5.5108
_cell_length_b                   5.5084
_cell_length_c                   7.7964
_cell_volume                     236.665
loop_
_symmetry_equiv_pos_as_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
_atom_site_U_iso_or_equiv
Na -0.00340 0.50030 0.25000 0.54000 0.01790
La -0.00340 0.50030 0.25000 0.09000 0.01790
Ce -0.00340 0.50030 0.25000 0.17000 0.01790
Pr -0.00340 0.50030 0.25000 0.01000 0.01790
Nd -0.00340 0.50030 0.25000 0.03000 0.01790
Ca -0.00340 0.50030 0.25000 0.09000 0.01790
Sr -0.00340 0.50030 0.25000 0.04000 0.01790
Ti 0.00000 0.00000 0.00000 0.76000 0.01170
Nb 0.00000 0.00000 0.00000 0.23000 0.01170
Ta 0.00000 0.00000 0.00000 0.01000 0.01170
O1 0.05080 -0.00160 0.25000 1.00000 0.03440
O2 0.24280 0.25100 -0.01810 1.00000 0.05970
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
Ti 0.00970 0.01420 0.01120 0.00190 0.00000 -0.00130
Nb 0.00970 0.01420 0.01120 0.00190 0.00000 -0.00130
Ta 0.00970 0.01420 0.01120 0.00190 0.00000 -0.00130
O1 0.02420 0.06220 0.01660 -0.00330 0.00000 0.00000
O2 0.06100 0.05300 0.06520 -0.04350 -0.00490 0.01490