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#$Date: 2012-02-28 17:44:07 +0200 (Tue, 28 Feb 2012) $
#$Revision: 35913 $
#$URL: file:///home/coder/svn-repositories/cod/cif/9/00/23/9002379.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_9002379
loop_
_publ_author_name
'Xu, H.'
'Heaney, P. J.'
'Beall, G. H.'
_publ_section_title
;
 Phase transitions induced by solid solution in stuffed derivatives of quartz:
 A powder synchrotron XRD study of the LiAlSiO4-SiO2 join
 Sample: x=.2, Li.8Al.8Si1.2O4, beta eucryptite structure
;
_journal_name_full               'American Mineralogist'
_journal_page_first              971
_journal_page_last               979
_journal_volume                  85
_journal_year                    2000
_chemical_formula_sum            'Al Li O4 Si'
_chemical_name_mineral           Li.8Al.8Si1.2O4
_space_group_IT_number           180
_symmetry_space_group_name_Hall  'P 62 2 (0 0 4)'
_symmetry_space_group_name_H-M   'P 62 2 2'
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                120
_cell_length_a                   10.4949
_cell_length_b                   10.4949
_cell_length_c                   10.9650
_cell_volume                     1045.914
_exptl_crystal_density_diffrn    2.401
_[local]_cod_chemical_formula_sum_orig 'Li Si Al O4'
_cod_database_code               9002379
_amcsd_database_code             AMCSD#0002462
loop_
_symmetry_equiv_pos_as_xyz
x,y,z
x,x-y,1/3-z
x-y,x,1/3+z
y,x,2/3-z
-y,x-y,2/3+z
-x+y,y,-z
-x,-y,z
-x,-x+y,1/3-z
-x+y,-x,1/3+z
-y,-x,2/3-z
y,-x+y,2/3+z
x-y,-y,-z
loop_
_atom_site_label
_atom_site_fract_x
_atom_site_fract_y
_atom_site_fract_z
_atom_site_U_iso_or_equiv
Li1 0.00000 0.00000 0.50000 0.02500
Li2 0.50000 0.00000 0.00000 0.02500
Li3 0.50000 0.00000 0.31600 0.02500
Si1 0.25040 0.00000 0.00000 0.00790
Si2 0.25010 0.50020 0.00000 0.00790
Al1 0.24900 0.00000 0.50000 0.00790
Al2 0.25030 0.50060 0.50000 0.00790
O1 0.10780 0.20610 0.24380 0.01340
O2 0.09870 0.69660 0.25630 0.01340
O3 0.59130 0.70100 0.27790 0.01340
O4 0.59980 0.20240 0.24940 0.01340