Tychite
      Shiba H, Watanabe T
      Comptes Rendus Hebdomadaires des Seances de l'Academie des Sciences 193 (1931) 1421-1423
      Les structures des cristaux de northupite, de northupite bromee et de
      tychite.
      _cod_database_code 1011158
      _database_code_amcsd 0018038

      CELL PARAMETERS:   13.9300  13.9300  13.9300   90.000   90.000   90.000
      SPACE GROUP: Fd3m      
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:   2703.046
      Density (g/cm3):      2.568
      MAX. ABS. INTENSITY / VOLUME**2:      11.16887397    
      RIR:      1.416
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                11.00          3.77        8.0425    1   1   1         8
                21.15         56.60        4.2001    3   1   1        24
                22.11         20.94        4.0212    2   2   2         8
                25.58          1.39        3.4825    4   0   0         6
                27.92         10.14        3.1958    3   3   1        24
                33.42         52.89        2.6808    5   1   1        24
                33.42         36.51        2.6808    3   3   3         8
                36.49        100.00        2.4625    4   4   0        12
                38.79         17.16        2.3217    4   4   2        24
                42.56          1.71        2.1243    5   3   3        24
                45.09         13.17        2.0106    4   4   4         8
                46.56         24.64        1.9506    7   1   1        24
                48.93          1.81        1.8615    6   4   2        48
                50.31          4.80        1.8135    5   5   3        24
                52.56         13.05        1.7413    8   0   0         6
                56.02          5.62        1.6417    8   2   2        24
                56.02          3.29        1.6417    6   6   0        12
                57.28         12.99        1.6085    7   5   1        48
                57.28         18.01        1.6085    5   5   5         8
                57.69         10.57        1.5979    6   6   2        24
                59.34          2.41        1.5574    8   4   0        24
                65.67          8.62        1.4217    8   4   4        24
                69.84         11.71        1.3467    9   5   1        48
                69.84          1.67        1.3467    7   7   3        24
                70.22          2.05        1.3404    6   6   6         8
                72.81          2.89        1.2990    9   5   3        48
                74.64          1.68        1.2716   10   4   2        48
                75.73          1.24        1.2560   11   1   1        24
                77.53          6.19        1.2312    8   8   0        12
                78.61          2.58        1.2171   11   3   1        48
                78.96          1.88        1.2125    8   8   2        24
                86.05          1.66        1.1299   10   6   4        48
                87.10          3.24        1.1189    9   7   5        48
                88.86          7.67        1.1013   12   4   0        24
                89.91          1.96        1.0911    9   9   1        24
================================================================================
       XPOW Copyright 1993 Bob Downs, Ranjini Swaminathan and Kurt Bartelmehs
  For reference, see Downs et al. (1993) American Mineralogist 78, 1104-1107.