#*********************************************************************************
#
# Crystallographic Information File for K-Heulandite
#
# Reference :
# Galli, E., Gottardi, G., Mayer, H., Preisindex, A. and Passaglia, E.
# Acta Cryst., B39, 189-197, (1983)
#
#
# CIF downloaded from the IZA-SC Database of Zeolite Structures
# Ch. Baerlocher, L.B. McCusker and D.H. Brouwer
# Database of Zeolite Structures: https://www.iza-structure.org/databases/
#
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data_K-Heulandite
_chemical_name_systematic 'K-Heulandite'
_cell_length_a 17.767
_cell_length_b 17.958
_cell_length_c 7.431
_cell_angle_alpha 90
_cell_angle_beta 115.93
_cell_angle_gamma 90
_cell_formula_units_Z 1
_space_group.name_H-M_ref 'C 1 2/m 1'
_symmetry_space_group_name_H-M 'C 1 2/m 1'
_symmetry_space_group_name_Hall '-C 2y'
_space_group.IT_number 12
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
K1 K 0.079 0 0.281 19.1 0.34
K2 K 0.071 0 0.11 10.6 0.36
K3 K 0.241 0.5 0.061 3.4 0.74
K4 K 0.21 0.5 -0.033 4.6 0.19
K5 K 0.032 0.5 0.19 9.6 0.49
SI1 Si 0.1794 0.1686 0.0978 1 0.74
SI2 Si 0.2146 0.4108 0.5063 1.1 0.74
SI3 Si 0.2083 0.1912 0.7161 1 0.74
SI4 Si 0.0668 0.2983 0.4176 1.1 0.74
SI5 Si 0 0.2173 0 1.3 0.74
AL1 Al 0.1794 0.1686 0.0978 1 0.26
AL2 Al 0.2146 0.4108 0.5063 1.1 0.26
AL3 Al 0.2083 0.1912 0.7161 1 0.26
AL4 Al 0.0668 0.2983 0.4176 1.1 0.26
AL5 Al 0 0.2173 0 1.3 0.26
O1 O 0.1981 0.5 0.4565 2.3 1
O2 O 0.233 0.1213 0.6144 2.7 1
O3 O 0.1882 0.1535 0.8902 3 1
O4 O 0.2304 0.1008 0.2473 2.5 1
O5 O 0 0.3257 0.5 3.2 1
O6 O 0.0805 0.1614 0.0499 2.6 1
O7 O 0.1226 0.2296 0.5515 3.2 1
O8 O 0.0142 0.2709 0.1891 3.4 1
O9 O 0.2153 0.2492 0.1928 2.4 1
O10 O 0.1208 0.3708 0.4225 2.8 1
H2O1 O2-(H2O) 0.408 0.092 0.049 9.7 1
H2O2 O2-(H2O) 0.008 0.099 0.414 8 0.5
H2O3 O2-(H2O) 0.365 0.5 0.334 6.7 0.45
H2O4 O2-(H2O) 0.419 0.5 0.207 10.3 0.55
H2O5 O2-(H2O) 0 0.5 0.5 10.9 1
# End of data for K-Heulandite