Al F4 Rb
      Bulou A, Nouet J
      Journal of Physics C: Solid State Physics 15 (1982) 183-196
      Structural phase transitions in ferroelastic RbAlF4: I. DSC, X-ray powder diffraction
      investigations and neutron powder profile refinement of the structures
      _cod_database_code 1000457
      _database_code_amcsd 0013172

      CELL PARAMETERS:    7.2124   7.2073   6.2396   90.000   90.000   90.000
      SPACE GROUP: Pmmn      
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:    324.346
      Density (g/cm3):      3.858
      MAX. ABS. INTENSITY / VOLUME**2:      27.13001284    
      RIR:      2.289
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                14.19         10.73        6.2396    0   0   1         2
                18.81          2.18        4.7188    1   0   1         4
                18.81          3.18        4.7174    0   1   1         4
                24.69          2.20        3.6062    2   0   0         2
                24.71          2.43        3.6037    0   2   0         2
                28.59         86.33        3.1222    2   0   1         4
                28.61         88.44        3.1206    0   2   1         4
                28.61         49.04        3.1198    0   0   2         2
                31.22          2.82        2.8650    2   1   1         8
                35.21         60.98        2.5491    2   2   0         4
                38.14         68.68        2.3597    2   2   1         8
                38.14         31.32        2.3594    2   0   2         4
                38.15         28.70        2.3587    0   2   2         4
                39.51          1.12        2.2806    3   1   0         4
                40.22          6.33        2.2423    2   1   2         8
                40.22          2.95        2.2420    0   3   1         4
                40.23          1.57        2.2418    1   2   2         8
                42.19          1.62        2.1420    3   1   1         8
                42.21          1.32        2.1409    1   3   1         8
                45.38          5.79        1.9983    0   1   3         4
                45.98          7.68        1.9740    2   2   2         8
                47.78          1.05        1.9035    0   3   2         4
                49.53          1.12        1.8404    1   3   2         8
                50.62         22.30        1.8031    4   0   0         2
                50.66         21.38        1.8018    0   4   0         2
                50.67         19.93        1.8017    2   0   3         4
                50.68         21.38        1.8014    0   2   3         4
                52.34          1.26        1.7479    2   1   3         8
                52.85          1.41        1.7322    4   0   1         4
                52.89          1.23        1.7311    0   4   1         4
                54.51          1.75        1.6834    2   3   2         8
                57.16          5.86        1.6115    2   2   3         8
                59.18         20.92        1.5612    4   2   1         8
                59.18          8.72        1.5611    4   0   2         4
                59.21         20.32        1.5606    2   4   1         8
                59.22          9.61        1.5603    0   4   2         4
                59.24          9.14        1.5599    0   0   4         2
                64.67          1.36        1.4414    2   3   3         8
                65.12          6.27        1.4325    4   2   2         8
                65.14          6.26        1.4320    2   4   2         8
                66.59          2.76        1.4043    2   1   4         8
                70.32          1.81        1.3387    4   1   3         8
                70.82          8.49        1.3305    2   2   4         8
                74.44          8.99        1.2745    4   4   0         4
                74.45         11.47        1.2744    4   2   3         8
                74.47         10.37        1.2740    2   4   3         8
                76.25          1.04        1.2487    4   4   1         8
                77.63          2.92        1.2299    2   3   4         8
                77.65          1.36        1.2296    0   1   5         4
                81.19          1.20        1.1847    0   5   3         4
                81.55          2.36        1.1804    6   0   1         4
                81.60          5.70        1.1799    4   4   2         8
                81.61          5.11        1.1797    4   0   4         4
                81.62          2.56        1.1796    0   6   1         4
                81.64          4.84        1.1793    0   4   4         4
                81.65          1.34        1.1792    0   2   5         4
                82.97          1.05        1.1638    2   1   5         8
                85.07          3.72        1.1403    6   2   0         4
                85.13          3.17        1.1397    2   6   0         4
                86.83          2.25        1.1217    6   2   1         8
                86.83          1.72        1.1217    6   0   2         4
                86.89          2.27        1.1211    2   6   1         8
                86.90          1.31        1.1210    0   6   2         4
                86.92          2.02        1.1208    2   2   5         8
================================================================================
       XPOW Copyright 1993 Bob Downs, Ranjini Swaminathan and Kurt Bartelmehs
  For reference, see Downs et al. (1993) American Mineralogist 78, 1104-1107.