Leucite
      Palmer D C, Dove M T, Ibberson R M, Powell B M
      American Mineralogist 82 (1997) 16-29
      Structural behavior, crystal chemistry and phase transitions in substituted
      leucites: High-resolution neutron powder diffraction studies
      Sample: Expt. no. 2830, T = 298 K, RbAlSi2O6
      _database_code_amcsd 0001852

      CELL PARAMETERS:   13.2918  13.2918  13.7412   90.000   90.000   90.000
      SPACE GROUP: I4_1/a    
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:   2427.681
      Density (g/cm3):      2.896
      MAX. ABS. INTENSITY / VOLUME**2:      20.33776097    
      RIR:      2.287
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                18.57          2.99        4.7768    2   0   2         8
                24.54          4.17        3.6282    2   1   3         8
                24.54         16.80        3.6282    1   2   3         8
                24.83         14.87        3.5855    3   1   2         8
                24.83          6.40        3.5855    1   3   2         8
                25.01         13.74        3.5606    3   2   1         8
                25.01          2.52        3.5606    2   3   1         8
                25.94         62.66        3.4353    0   0   4         2
                26.83        100.00        3.3229    4   0   0         4
                28.02          2.08        3.1845    3   0   3         8
                29.27          1.72        3.0517    2   0   4         8
                29.87          1.46        2.9914    4   0   2         8
                30.07          3.16        2.9721    2   4   0         4
                30.07         15.85        2.9721    4   2   0         4
                31.14         23.67        2.8719    3   2   3         8
                31.14         20.51        2.8719    2   3   3         8
                31.38         22.26        2.8505    3   3   2         8
                33.70          3.72        2.6599    3   1   4         8
                33.70          1.18        2.6599    1   3   4         8
                34.01          1.13        2.6363    1   4   3         8
                36.00          1.12        2.4945    1   2   5         8
                36.88          1.05        2.4372    5   1   2         8
                37.00          4.97        2.4293    5   2   1         8
                37.66         29.26        2.3884    4   0   4         8
                38.31          8.72        2.3497    4   4   0         4
                38.55          1.73        2.3354    3   0   5         8
                39.18          1.33        2.2992    5   0   3         8
                40.96          3.57        2.2033    3   2   5         8
                40.96          2.51        2.2033    2   3   5         8
                41.56          5.48        2.1728    5   2   3         8
                41.71          1.56        2.1652    2   0   6         8
                41.75         12.56        2.1636    3   5   2         8
                45.08          2.17        2.0111    3   1   6         8
                45.08          1.34        2.0111    1   3   6         8
                46.02          3.29        1.9722    1   6   3         8
                46.29          1.95        1.9611    3   6   1         8
                46.84          4.83        1.9394    4   4   4         8
                48.26          1.19        1.8857    4   0   6         8
                48.86          1.07        1.8640    2   1   7         8
                48.86          2.37        1.8640    1   2   7         8
                49.29          3.29        1.8489    3   3   6         8
                49.45          2.08        1.8432    4   6   0         4
                49.65          1.88        1.8363    5   2   5         8
                50.16          3.45        1.8186    6   3   3         8
                50.16          1.63        1.8186    3   6   3         8
                50.33          2.74        1.8131    7   1   2         8
                50.42          1.79        1.8099    7   2   1         8
                52.14          1.39        1.7541    7   0   3         8
                52.84          3.66        1.7327    3   2   7         8
                52.84          3.93        1.7327    2   3   7         8
                53.34          2.66        1.7176    0   0   8         2
                54.07          3.15        1.6960    7   2   3         8
                54.07          2.35        1.6960    2   7   3         8
                54.23          1.04        1.6916    7   3   2         8
                54.23          7.50        1.6916    3   7   2         8
                54.32          1.36        1.6889    5   6   1         8
                55.29          2.93        1.6615    8   0   0         4
                55.74          1.21        1.6490    7   1   4         8
                57.00          2.35        1.6156    3   5   6         8
                57.15          3.05        1.6119    8   2   0         4
                57.80          1.28        1.5953    5   6   3         8
                60.24          1.32        1.5364    5   2   7         8
                60.69          2.77        1.5259    4   0   8         8
                61.51          3.38        1.5075    7   5   2         8
                62.05          2.65        1.4957    8   0   4         8
                64.09          1.13        1.4530    7   1   6         8
                67.12          1.63        1.3945    6   3   7         8
                67.47          2.88        1.3882    3   7   6         8
                67.55          1.01        1.3867    4   4   8         8
                68.84          1.24        1.3639    8   4   4         8
                69.08          1.96        1.3597    1   1  10         8
                70.43          1.09        1.3369    2   7   7         8
                71.69          2.50        1.3165    1  10   1         8
                72.35          1.74        1.3061    3   1  10         8
                74.70          1.65        1.2707    1  10   3         8
                74.91          1.35        1.2677   10   3   1         8
                78.72          1.42        1.2156    5   1  10         8
                80.61          1.07        1.1918    1  10   5         8
                81.22          1.34        1.1844    5  10   1         8
                81.85          1.96        1.1768    3   5  10         8
================================================================================
       XPOW Copyright 1993 Bob Downs, Ranjini Swaminathan and Kurt Bartelmehs
  For reference, see Downs et al. (1993) American Mineralogist 78, 1104-1107.