/usr/share/avogadro/crystals/zeolites/AEI.cif is in avogadro-data 1.2.0-3.
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#**************************************************************************
#
# CIF taken from the IZA-SC Database of Zeolite Structures
# Ch. Baerlocher and L.B. McCusker
# Database of Zeolite Structures: http://www.iza-structure.org/databases/
#
# All data on this site have been placed in the public domain.
# If you use this work in a scientific publication, you are obligated to
# cite its origin.
#
# The atom coordinates and the cell parameters were optimized with DLS76
# assuming a pure SiO2 composition.
#
#**************************************************************************
_cell_length_a 13.6770(0)
_cell_length_b 12.6070(0)
_cell_length_c 18.4970(0)
_cell_angle_alpha 90.0000(0)
_cell_angle_beta 90.0000(0)
_cell_angle_gamma 90.0000(0)
_symmetry_space_group_name_H-M 'C m c m'
_symmetry_Int_Tables_number 63
_symmetry_cell_setting orthorhombic
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'
'+x,-y,1/2+z'
'1/2+x,1/2-y,1/2+z'
'-x,-y,1/2+z'
'1/2-x,1/2-y,1/2+z'
'-x,-y,-z'
'1/2-x,1/2-y,-z'
'+x,-y,-z'
'1/2+x,1/2-y,-z'
'-x,+y,1/2-z'
'1/2-x,1/2+y,1/2-z'
'+x,+y,1/2-z'
'1/2+x,1/2+y,1/2-z'
loop_
_atom_site_label
_atom_site_type_symbol
_atom_site_fract_x
_atom_site_fract_y
_atom_site_fract_z
O1 O 0.0000 0.0004 0.1614
O2 O 0.1449 0.0438 0.2500
O3 O 0.1252 0.1515 0.1293
O4 O 0.1804 0.9517 0.1253
O5 O 0.1465 0.8322 0.0116
O6 O 0.0000 0.7364 0.9468
O7 O 0.1794 0.6672 0.9281
O8 O 0.7404 0.0000 0.0000
T1 Si 0.1126 0.0369 0.1664
T2 Si 0.1128 0.7711 0.9394
T3 Si 0.7733 0.9042 0.0521
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