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#$Date: 2014-07-12 11:06:43 +0300 (Sat, 12 Jul 2014) $
#$Revision: 120115 $
#$URL: file:///home/coder/svn-repositories/cod/cif/9/00/75/9007506.cif $
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#
# 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_9007506
loop_
_publ_author_name
'Stephenson, D. A.'
'Moore, P. B.'
_publ_section_title
;
 The crystal structure of grandidierite, (Mg,Fe)Al3SiBO9
 Locality: Fort Dauphin, Madagascar
;
_journal_name_full               'Acta Crystallographica, Section B'
_journal_page_first              1518
_journal_page_last               1522
_journal_volume                  24
_journal_year                    1968
_chemical_formula_sum            'Al3 B Fe0.1 Mg0.9 O9 Si'
_chemical_name_mineral           Grandidierite
_space_group_IT_number           62
_symmetry_space_group_name_Hall  '-P 2c 2ab'
_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                   10.335
_cell_length_b                   10.978
_cell_length_c                   5.760
_cell_volume                     653.516
_exptl_crystal_density_diffrn    2.961
_[local]_cod_chemical_formula_sum_orig '(Mg.9 Fe.1) Al3 Si B O9'
_cod_database_code               9007506
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
Mg 0.09330 0.21880 0.25000 0.90000 0.00671
Fe 0.09330 0.21880 0.25000 0.10000 0.00671
All 0.00000 0.00000 0.00000 1.00000 0.00494
Al2 0.50000 0.00000 0.00000 1.00000 0.00494
Al3 0.22620 0.44780 0.25000 1.00000 0.00418
Si 0.43390 0.26330 0.25000 1.00000 0.00342
B 0.25080 0.00030 0.75000 1.00000 0.00380
O1 0.27600 0.28810 0.25000 1.00000 0.00443
O2 0.11870 0.02180 0.25000 1.00000 0.00785
O3 0.12170 -0.00360 0.75000 1.00000 0.00722
O4 0.47370 0.12110 0.25000 1.00000 0.00418
O5 0.54600 0.09920 0.75000 1.00000 0.00595
O6 -0.00770 0.17030 -0.02390 1.00000 0.00671
O7 0.18040 0.50190 -0.04620 1.00000 0.00785
_journal_paper_doi 10.1107/S0567740868004577