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


data_ZSM-18_siliceous
_chemical_name_systematic 'ZSM-18, siliceous'

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

_space_group.name_H-M_ref   'P 63/m'
_symmetry_space_group_name_H-M   'P 63/m'
_symmetry_space_group_name_Hall  '-P 6c'
_space_group.IT_number  176 

 
 loop_
_atom_site_label
_atom_site_type_symbol
_atom_site_fract_x
_atom_site_fract_y
_atom_site_fract_z
_atom_site_B_iso_or_equiv
_atom_site_occupancy
SI1  Si  0.6667  0.3333  0.3495  0  1
SI2  Si  0.6713  0.15  0.47  0  1
SI3  Si  0.4522  0.1161  0.5682  0  1
SI4  Si  0.5266  0.2118  0.75  0  1
O1  O  0.6667  0.3333  0.25  0  1
O2  O  0.6623  0.2169  0.3878  0  1
O3  O  0.5793  0.1388  0.5411  0  1
O4  O  0.4217  0.1984  0.5101  0  1
O5  O  0.454  0.1495  0.6663  0  1
O6  O  0.6506  0.2126  0.75  0  1
O7  O  0.6443  0.02  0.4453  0  1

# End of data for ZSM-18_siliceous