#------------------------------------------------------------------------------
#$Date: 2008-01-26 15:05:32 +0200 (Sat, 26 Jan 2008) $
#$Revision: 19 $
#$URL: file:///home/coder/svn-repositories/cod/cif/9/9000745.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_9000745
_chemical_name 'Labradorite'
loop_
_publ_author_name
'Wenk H R'
'Joswig W'
'Tagai T'
'Korekawa M'
'Smith B K'
_journal_name_full "American Mineralogist"
_journal_volume 65
_journal_year 1980
_journal_page_first 81
_journal_page_last 95
_publ_section_title
;
 The average structure of An 62-66 labradorite
 Surtsey neutron
 feldspar
;
_chemical_formula_sum 'Ca.325 Na.16 (Si1.19 Al.81) O4'
_cell_length_a 8.1736
_cell_length_b 12.8736
_cell_length_c 7.1022
_cell_angle_alpha 93.462
_cell_angle_beta 116.054
_cell_angle_gamma 90.475
_cell_volume 669.647
_symmetry_space_group_name_H-M 'C -1'
loop_
_symmetry_equiv_pos_as_xyz
  'x,y,z'
  '1/2+x,1/2+y,z'
  '-x,-y,-z'
  '1/2-x,1/2-y,-z'
loop_
_atom_site_label
_atom_site_fract_x
_atom_site_fract_y
_atom_site_fract_z
_atom_site_occupancy
Ca1   0.26660   0.98700   0.16200   0.32500
Na1   0.26660   0.98700   0.16200   0.16000
Ca2   0.27330   0.03090   0.09500   0.32500
Na2   0.27330   0.03090   0.09500   0.16000
Si1   0.00620   0.16320   0.21530   0.59500
Al1   0.00620   0.16320   0.21530   0.40500
Si2   0.00260   0.81630   0.23060   0.59500
Al2   0.00260   0.81630   0.23060   0.40500
Si3   0.68480   0.10880   0.31770   0.59500
Al3   0.68480   0.10880   0.31770   0.40500
Si4   0.68060   0.87900   0.35710   0.59500
Al4   0.68060   0.87900   0.35170   0.40500
Oa1   0.00390   0.12900   0.98080   1.00000
Oa2   0.57990   0.99120   0.27860   1.00000
Obo   0.81300   0.10360   0.18920   1.00000
Obm   0.81580   0.85300   0.24440   1.00000
Oco   0.01430   0.28950   0.28170   1.00000
Ocm   0.01220   0.68660   0.21300   1.00000
Odo   0.19720   0.10740   0.38160   1.00000
Odm   0.19020   0.86600   0.42930   1.00000