/usr/share/avogadro/crystals/zeolites/VNI.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 10.0020(0)
_cell_length_b 10.0020(0)
_cell_length_c 34.1410(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 'P 42/n c m'
_symmetry_Int_Tables_number 138
_space_group.IT_coordinate_system_code '2'
_symmetry_cell_setting tetragonal
loop_
_symmetry_equiv_pos_as_xyz
'+x,+y,+z'
'1/2-y,+x,1/2+z'
'1/2-x,1/2-y,+z'
'+y,1/2-x,1/2+z'
'1/2-x,+y,1/2+z'
'+y,+x,+z'
'+x,1/2-y,1/2+z'
'1/2-y,1/2-x,+z'
'-x,-y,-z'
'1/2+y,-x,1/2-z'
'1/2+x,1/2+y,-z'
'-y,1/2+x,1/2-z'
'1/2+x,-y,1/2-z'
'-y,-x,-z'
'-x,1/2+y,1/2-z'
'1/2+y,1/2+x,-z'
loop_
_atom_site_label
_atom_site_type_symbol
_atom_site_fract_x
_atom_site_fract_y
_atom_site_fract_z
O1 O 0.0045 0.8183 0.9212
O2 O 0.0345 0.6515 0.8626
O3 O 0.1056 0.5802 0.9336
O4 O 0.2500 0.7500 0.8954
O5 O 0.1585 0.1585 0.4623
O6 O 0.0000 0.0000 0.5000
O7 O 0.0030 0.0030 0.2442
O8 O 0.0640 0.2500 0.2640
O9 O 0.0598 0.0598 0.3172
O10 O 0.1212 0.1212 0.6989
O11 O 0.1574 0.1574 0.0180
O12 O 0.2500 0.2500 0.0839
T1 Si 0.0985 0.7029 0.9032
T2 Si 0.0455 0.0455 0.4569
T3 Si 0.0946 0.0946 0.2723
T4 Si 0.1084 0.1084 0.7458
T5 Si 0.9554 0.9554 0.3361
T6 Si 0.1454 0.1454 0.0650
T7 Si 0.2500 0.2500 0.4904
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