/usr/share/avogadro/crystals/zeolites/IRR.cif is in avogadro-data 1.2.0-3.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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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 19.0310(0)
_cell_length_b 19.0310(0)
_cell_length_c 14.1010(0)
_cell_angle_alpha 90.0000(0)
_cell_angle_beta 90.0000(0)
_cell_angle_gamma 120.0000(0)
_symmetry_space_group_name_H-M 'P 6/m m m'
_symmetry_Int_Tables_number 191
_symmetry_cell_setting hexagonal
loop_
_symmetry_equiv_pos_as_xyz
'+x,+y,+z'
'-y,+x-y,+z'
'-x+y,-x,+z'
'-x,-y,+z'
'+y,-x+y,+z'
'+x-y,+x,+z'
'+y,+x,+z'
'+x-y,-y,+z'
'-x,-x+y,+z'
'-y,-x,+z'
'-x+y,+y,+z'
'+x,+x-y,+z'
'-x,-y,-z'
'+y,-x+y,-z'
'+x-y,+x,-z'
'+x,+y,-z'
'-y,+x-y,-z'
'-x+y,-x,-z'
'-y,-x,-z'
'-x+y,+y,-z'
'+x,+x-y,-z'
'+y,+x,-z'
'+x-y,-y,-z'
'-x,-x+y,-z'
loop_
_atom_site_label
_atom_site_type_symbol
_atom_site_fract_x
_atom_site_fract_y
_atom_site_fract_z
O1 O 0.4403 0.1502 0.3336
O2 O 0.5600 0.1200 0.3695
O3 O 0.4101 0.0000 0.3530
O4 O 0.4517 0.0969 0.5000
O5 O 0.4940 0.2470 0.1850
O6 O 0.5751 0.2875 0.3468
O7 O 0.5267 0.2634 0.0000
O8 O 0.6210 0.2421 0.1176
O9 O 0.6667 0.3333 0.5000
T1 Si 0.4662 0.0922 0.3883
T2 Si 0.4865 0.2433 0.2989
T3 Si 0.5641 0.2820 0.1056
T4 Si 0.6667 0.3333 0.3861
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