Jakobssonite
      Hemon A, Courbion G
      Acta Crystallographica C47 (1991) 1302-1303
      Refinement of the room-temperature structure of alpha-CaAlF5
      _cod_database_code 1000300
      _database_code_amcsd 0010259

      CELL PARAMETERS:    8.7120   6.3170   7.3490   90.000  115.040   90.000
      SPACE GROUP: C2/c      
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:    366.430
      Density (g/cm3):      2.937
      MAX. ABS. INTENSITY / VOLUME**2:      14.90199594    
      RIR:      1.652
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                19.36          4.87        4.5854   -1   1   1         4
                22.53        100.00        3.9466    2   0   0         2
                25.15          2.03        3.5405    1   1   1         4
                28.09         85.22        3.1762   -1   1   2         4
                28.25         41.50        3.1585    0   2   0         2
                31.35          1.22        2.8537    0   2   1         4
                37.01          3.06        2.4288    3   1   0         4
                39.30         10.69        2.2927   -2   2   2         4
                39.32         12.65        2.2913    0   2   2         4
                39.89          7.74        2.2599   -1   1   3         4
                42.21          1.02        2.1409   -4   0   2         2
                43.15          5.24        2.0963   -3   1   3         4
                44.42          1.82        2.0396    3   1   1         4
                44.53          3.94        2.0345    1   3   0         4
                45.16         11.66        2.0079   -1   3   1         4
                45.99         33.23        1.9733    4   0   0         2
                47.30          1.39        1.9216   -2   2   3         4
                48.17          3.82        1.8890    1   3   1         4
                49.28          2.18        1.8492    1   1   3         4
                49.62         24.87        1.8372   -2   0   4         2
                49.92         22.82        1.8270   -1   3   2         4
                51.57          8.72        1.7721   -4   2   2         4
                51.63          9.67        1.7703    2   2   2         4
                53.78          4.78        1.7044   -3   3   1         4
                54.73          8.19        1.6772   -5   1   2         4
                54.80          8.10        1.6751    3   1   2         4
                54.86          8.17        1.6735    4   2   0         4
                55.10          4.73        1.6666   -4   0   4         2
                55.18          5.42        1.6646    0   0   4         2
                55.40          2.20        1.6584   -3   3   2         4
                55.44          2.39        1.6574    1   3   2         4
                57.38          2.90        1.6060   -5   1   3         4
                58.06          1.84        1.5885   -1   3   3         4
                58.08         10.05        1.5881   -2   2   4         4
                58.44          6.83        1.5792    0   4   0         2
                60.22          1.25        1.5366    0   4   1         4
                61.58          3.07        1.5061    3   3   1         4
                63.44          2.07        1.4662    2   4   0         4
                69.90          5.07        1.3458   -6   0   4         2
                70.03          6.37        1.3436    2   0   4         2
                70.17          4.90        1.3411   -5   3   2         4
                70.24          5.50        1.3401    3   3   2         4
                71.10          2.00        1.3259   -5   3   1         4
                71.75          3.18        1.3155    6   0   0         2
                74.46          1.03        1.2742   -4   4   1         4
                75.23          1.10        1.2631    5   3   0         4
                76.79          1.83        1.2413   -1   5   1         4
                77.02          3.39        1.2381   -6   2   4         4
                77.15          2.68        1.2364    2   2   4         4
                77.40          3.88        1.2330    4   4   0         4
                79.75          2.87        1.2024   -3   1   6         4
                79.80          2.07        1.2019   -3   3   5         4
                80.14          3.50        1.1976   -2   4   4         4
                82.05          1.17        1.1745   -1   3   5         4
                86.37          1.32        1.1265   -5   3   5         4
                87.00          1.73        1.1200   -1   5   3         4
================================================================================
       XPOW Copyright 1993 Bob Downs, Ranjini Swaminathan and Kurt Bartelmehs
  For reference, see Downs et al. (1993) American Mineralogist 78, 1104-1107.