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#$Date: 2008-03-10 10:25:41 +0200 (Mon, 10 Mar 2008) $
#$Revision: 255 $
#$URL: file:///home/coder/svn-repositories/cod/cif/9/9009301.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_9009301
loop_
_publ_author_name
'Nuber B'
'Schmetzer K'
_publ_section_title
;
 Crystal structure of ternary Be-Mg-Al oxides: taaffeite, BeMg3Al8O16,
 and musgravite, BeMg2Al6O12
 Note: formerly known as musgravite-18R
 Locality: Musgrave Ranges, Australia
;
_journal_name_full               'Neues Jahrbuch fur Mineralogie, Monatshefte'
_journal_page_first              393
_journal_page_last               402
_journal_volume                  1983
_journal_year                    1983
_chemical_formula_sum            '(Mg1.63 Fe.37) Al6 Be O12'
_chemical_name_mineral           Magnesiotaaffeite-6N3S
_symmetry_space_group_name_H-M   'R -3 m'
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                120
_cell_length_a                   5.683
_cell_length_b                   5.683
_cell_length_c                   41.13
_cell_volume                     1150.389
loop_
_symmetry_equiv_pos_as_xyz
x,y,z
2/3+x,1/3+y,1/3+z
1/3+x,2/3+y,2/3+z
x,x-y,z
2/3+x,1/3+x-y,1/3+z
1/3+x,2/3+x-y,2/3+z
y,x,-z
2/3+y,1/3+x,1/3-z
1/3+y,2/3+x,2/3-z
-x+y,y,z
2/3-x+y,1/3+y,1/3+z
1/3-x+y,2/3+y,2/3+z
-x,-x+y,-z
2/3-x,1/3-x+y,1/3-z
1/3-x,2/3-x+y,2/3-z
-y,-x,z
2/3-y,1/3-x,1/3+z
1/3-y,2/3-x,2/3+z
x-y,-y,-z
2/3+x-y,1/3-y,1/3-z
1/3+x-y,2/3-y,2/3-z
y,-x+y,-z
2/3+y,1/3-x+y,1/3-z
1/3+y,2/3-x+y,2/3-z
-x+y,-x,z
2/3-x+y,1/3-x,1/3+z
1/3-x+y,2/3-x,2/3+z
-x,-y,-z
2/3-x,1/3-y,1/3-z
1/3-x,2/3-y,2/3-z
-y,x-y,z
2/3-y,1/3+x-y,1/3+z
1/3-y,2/3+x-y,2/3+z
x-y,x,-z
2/3+x-y,1/3+x,1/3-z
1/3+x-y,2/3+x,2/3-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
Mg1 0.33333 0.66667 0.12020 0.94000 0.00430
Fe1 0.33333 0.66667 0.12020 0.06000 0.00430
Mg2 0.66667 0.33333 0.01370 0.69000 0.00450
Fe2 0.66667 0.33333 0.01370 0.31000 0.00450
Al1 0.00000 0.00000 0.00000 1.00000 0.00560
Al2 0.16680 0.33360 0.05730 1.00000 0.00450
Al3 0.00000 0.50000 0.50000 1.00000 0.00480
Al4 0.66667 0.33333 0.09670 1.00000 0.00280
Be 0.00000 0.00000 0.12100 1.00000 0.00450
O1 0.29360 0.14680 0.02990 1.00000 0.00620
O2 0.33333 0.66667 0.03410 1.00000 0.00580
O3 0.49460 0.98920 0.08250 1.00000 0.00560
O4 0.00000 0.00000 0.08150 1.00000 0.00530
O5 0.14620 0.29240 0.14080 1.00000 0.00510
O6 0.66667 0.33333 0.14020 1.00000 0.00450