#*********************************************************************************<br>
#<br>
# Crystallographic Information File for ZSM-18, siliceous <br>
#<br>
# Reference : <br>
#   Lawton, S.L. and Rohrbaugh, W.J.<br>
#   Science, 247, 1319-1321, (1990)<br>
#<br>
#<br>
# CIF downloaded from the IZA-SC Database of Zeolite Structures<br>
# Ch. Baerlocher, L.B. McCusker and D.H. Brouwer<br>
# Database of Zeolite Structures: https://www.iza-structure.org/databases/ <br>
#<br>
#**********************************************************************************<br>


data_ZSM-18_siliceous<br>
_chemical_name_systematic 'ZSM-18, siliceous'<br><br>

_cell_length_a      13.175<br>
_cell_length_b      13.175<br>
_cell_length_c      15.848 <br>
_cell_angle_alpha   90 <br>
_cell_angle_beta    90 <br>
_cell_angle_gamma   120<br>
_cell_formula_units_Z   1<br>

<br>_space_group.name_H-M_ref   'P 63/m'<br>
_symmetry_space_group_name_H-M   'P 63/m'<br>
_symmetry_space_group_name_Hall  '-P 6c'<br>
_space_group.IT_number  176 <br>
<br>
 
 loop_<br>
_atom_site_label<br>
_atom_site_type_symbol<br>
_atom_site_fract_x<br>
_atom_site_fract_y<br>
_atom_site_fract_z<br>
_atom_site_B_iso_or_equiv<br>
_atom_site_occupancy<br>
SI1  Si  0.6667  0.3333  0.3495  0  1<br>
SI2  Si  0.6713  0.15  0.47  0  1<br>
SI3  Si  0.4522  0.1161  0.5682  0  1<br>
SI4  Si  0.5266  0.2118  0.75  0  1<br>
O1  O  0.6667  0.3333  0.25  0  1<br>
O2  O  0.6623  0.2169  0.3878  0  1<br>
O3  O  0.5793  0.1388  0.5411  0  1<br>
O4  O  0.4217  0.1984  0.5101  0  1<br>
O5  O  0.454  0.1495  0.6663  0  1<br>
O6  O  0.6506  0.2126  0.75  0  1<br>
O7  O  0.6443  0.02  0.4453  0  1<br>

# End of data for ZSM-18_siliceous<br>