#------------------------------------------------------------------------------
#$Date: 2014-07-12 11:06:43 +0300 (Sat, 12 Jul 2014) $
#$Revision: 120115 $
#$URL: file:///home/coder/svn-repositories/cod/cif/9/01/65/9016561.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_9016561
loop_
_publ_author_name
'Gatta, G. D.'
'Vignola, P.'
'McIntyre, G. J.'
'Diella, V.'
_publ_section_title
;
 On the crystal chemistry of londonite [(Cs,K,Rb)Al4Be5B11O28]:
 a single-crystal neutron diffraction study at 300 and 20 K
 Note: neutron diffraction study at T = 20 K
;
_journal_name_full               'American Mineralogist'
_journal_page_first              1467
_journal_page_last               1472
_journal_volume                  95
_journal_year                    2010
_chemical_compound_source
'Antsongombato Gem mine, Betafo district, Madagascar'
_chemical_formula_sum            'Al4 B10.68 Be5.32 Cs0.34 K0.34 O28 Rb0.17'
_chemical_name_mineral           Londonite
_space_group_IT_number           215
_symmetry_space_group_name_Hall  'P -4 2 3'
_symmetry_space_group_name_H-M   'P -4 3 m'
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_length_a                   7.3094
_cell_length_b                   7.3094
_cell_length_c                   7.3094
_cell_volume                     390.522
_database_code_amcsd             0017718
_exptl_crystal_density_diffrn    3.369
_[local]_cod_chemical_formula_sum_orig
'Cs.34 K.34 Rb.17 Al4 (Be5.32 B10.68) O28'
_cod_database_code               9016561
loop_
_space_group_symop_operation_xyz
x,y,z
-z,x,-y
-y,z,-x
-x,y,-z
x,-z,-y
z,-y,-x
y,-x,-z
x,z,y
z,y,x
y,x,z
-z,-x,y
-y,-z,x
-x,-y,z
z,-x,-y
y,-z,-x
x,-y,-z
-x,z,-y
-z,y,-x
-y,x,-z
-x,-z,y
-z,-y,x
-y,-x,z
z,x,y
y,z,x
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
O2 0.00210 0.00210 0.00140 0.00090 0.00040 0.00040
O3 0.00230 0.00250 0.00250 -0.00010 0.00010 0.00020
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
Cs 0.00000 0.00000 0.00000 0.34000 0.01000
K 0.00000 0.00000 0.00000 0.34000 0.01000
Rb 0.00000 0.00000 0.00000 0.17000 0.01000
Al 0.36030 0.36030 0.36030 1.00000 0.00120
Be1 0.24846 0.50000 0.00000 0.12000 0.00120
B1 0.24846 0.50000 0.00000 0.88000 0.00120
Be2 0.74190 0.25810 0.25810 0.97000 0.00120
B2 0.74190 0.25810 0.25810 0.03000 0.00120
O1 0.38070 0.61930 0.38070 1.00000 0.00120
O2 0.36390 0.36390 0.10010 1.00000 0.00190
O3 0.39899 0.86510 0.13490 1.00000 0.00240
_journal_paper_doi 10.2138/am.2010.3554