/usr/share/avogadro/crystals/zeolites/NSI.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 14.1290(0)
_cell_length_b 5.2530(0)
_cell_length_c 8.9280(0)
_cell_angle_alpha 90.0000(0)
_cell_angle_beta 105.3680(0)
_cell_angle_gamma 90.0000(0)
_symmetry_space_group_name_H-M 'C 2/m'
_symmetry_Int_Tables_number 12
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,-z'
'1/2-x,1/2-y,-z'
'+x,-y,+z'
'1/2+x,1/2-y,+z'
loop_
_atom_site_label
_atom_site_type_symbol
_atom_site_fract_x
_atom_site_fract_y
_atom_site_fract_z
O1 O 0.6752 0.0000 0.1961
O2 O 0.5311 0.2500 0.2636
O3 O 0.5000 0.0000 0.0000
O4 O 0.0000 0.0000 0.5000
O5 O 0.1345 0.0000 0.7668
O6 O 0.2500 0.2500 0.0000
T1 Si 0.5590 0.0000 0.1805
T2 Si 0.0184 0.0000 0.6855
T3 Si 0.2396 0.0000 0.8932
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