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data_TUN
#**************************************************************************
#
# 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                  27.8450(250)
_cell_length_b                  20.0150(170)
_cell_length_c                  19.5960(120)
_cell_angle_alpha               90.0000(0)
_cell_angle_beta                93.2000(700)
_cell_angle_gamma               90.0000(0)

_symmetry_space_group_name_H-M     'C 2/m'
_symmetry_Int_Tables_number         12
_symmetry_cell_setting             monoclinic

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     0.0447    0.0912    0.8988
    O2    O     0.0874    0.2044    0.9346
    O3    O     0.1355    0.1103    0.8747
    O4    O     0.1102    0.0934    0.0006
    O5    O     0.1222    0.1990    0.6381
    O6    O     0.1272    0.2458    0.7628
    O7    O     0.1172    0.1169    0.7419
    O8    O     0.0450    0.1979    0.7104
    O9    O     0.0493    0.0942    0.0989
   O10    O     0.1150    0.0000    0.0952
   O11    O     0.1405    0.1228    0.1263
   O12    O     0.2026    0.0780    0.7914
   O13    O     0.1275    0.0000    0.8022
   O14    O     0.1399    0.3006    0.8834
   O15    O     0.1160    0.3068    0.0111
   O16    O     0.0507    0.3234    0.9102
   O17    O     0.2072    0.2066    0.1736
   O18    O     0.2975    0.1773    0.2085
   O19    O     0.2372    0.2024    0.3031
   O20    O     0.2664    0.2994    0.2250
   O21    O     0.0423    0.3109    0.0893
   O22    O     0.9955    0.2512    0.1850
   O23    O     0.0038    0.3824    0.1854
   O24    O     0.1219    0.2515    0.1330
   O25    O     0.1322    0.1813    0.2455
   O26    O     0.1189    0.3826    0.1211
   O27    O     0.0073    0.0000    0.1676
   O28    O     0.0077    0.1239    0.2122
   O29    O     0.1216    0.4027    0.6434
   O30    O     0.0401    0.4170    0.7039
   O31    O     0.1167    0.3760    0.7753
   O32    O     0.1115    0.5000    0.7313
   O33    O     0.1338    0.4228    0.2487
   O34    O     0.1572    0.5000    0.1475
   O35    O     0.2071    0.3914    0.1756
   O36    O     0.2377    0.3960    0.3045
   O37    O     0.1694    0.2989    0.4458
   O38    O     0.2206    0.4082    0.4345
   O39    O     0.1483    0.4060    0.5157
   O40    O     0.1320    0.4023    0.3813
   O41    O     0.0526    0.3921    0.3036
   O42    O     0.1201    0.3017    0.2946
   O43    O     0.1918    0.1187    0.6027
   O44    O     0.2288    0.0000    0.6261
   O45    O     0.0199    0.5000    0.2408
   O46    O     0.0492    0.2142    0.2936
   O47    O     0.2112    0.3790    0.6169
   O48    O     0.2840    0.3128    0.5702
   O49    O     0.2044    0.2489    0.5992
   O50    O     0.1442    0.1910    0.5103
   O51    O     0.1266    0.1996    0.3774
   O52    O     0.1765    0.5000    0.6027
    T1    Si    0.1026    0.1900    0.7133
    T2    Si    0.9978    0.3169    0.1381
    T3    Si    0.1505    0.1902    0.1695
    T4    Si    0.0943    0.1250    0.9273
    T5    Si    0.1000    0.3129    0.0885
    T6    Si    0.0048    0.0774    0.1451
    T7    Si    0.0977    0.4236    0.7133
    T8    Si    0.1541    0.4239    0.1734
    T9    Si    0.1036    0.0776    0.0801
   T10    Si    0.2523    0.3772    0.2285
   T11    Si    0.1457    0.0764    0.8025
   T12    Si    0.1675    0.3792    0.4447
   T13    Si    0.1098    0.3797    0.3073
   T14    Si    0.2408    0.0785    0.6221
   T15    Si    0.0088    0.4227    0.2564
   T16    Si    0.0021    0.1969    0.2454
   T17    Si    0.2402    0.3094    0.6204
   T18    Si    0.1463    0.3115    0.8030
   T19    Si    0.1638    0.2191    0.4400
   T20    Si    0.1065    0.2240    0.3029
   T21    Si    0.1640    0.4218    0.5943
   T22    Si    0.0987    0.2833    0.9351
   T23    Si    0.1658    0.1896    0.5884
   T24    Si    0.2518    0.2217    0.2272