Swedenborgite
Diffraction data computed using the structure from the paper listed below,
along with the cell parameters refined from single crystal data of R060486
      Pauling L, Klug H P, Winchell A N
      American Mineralogist 20 (1935) 492-501
      The crystal structure of swedenborgite, NaBe4SbO7

      CELL PARAMETERS:   5.4273  5.4273  8.8500   90.000   90.000  120.000
      SPACE GROUP: P6_3mc    

           ATOM        X         Y         Z     OCCUPANCY  ISO(B)
            Sb     0.33333   0.66667   0.00000     1.000     1.000
            Na     0.33333   0.33333   0.62500     1.000     1.500
            Be     0.00000   0.00000   0.06250     1.000     0.500
            Be     0.16667  -0.16667   0.31250     1.000     0.500
            O      0.00000   0.00000   0.37500     1.000     1.000
            O      0.50000  -0.50000   0.37500     1.000     1.000
            O      0.16667  -0.16667   0.12500     1.000     1.000

            X-RAY WAVELENGTH:     1.541838
            BOUNDS ON TWO THETA:    5.0  90.0
            LIMITS IMPOSED ON THE INDICES ARE:  +/-  4 +/-  4 +/-  8
            MAX. ABS. INTENSITY / VOLUME**2:      95.83320360    
            The INTENSITY cut off value is   1.00

               2-THETA      INTENSITY    D-SPACING   H   K   L
                18.88          8.09        4.7002    1   0   0
                20.07         39.08        4.4250    0   0   2
                21.41        100.00        4.1511    1   0   1
                27.69         13.75        3.2218    1   0   2
                33.01          1.18        2.7136    1   1   0
                35.94         18.96        2.4986    1   0   3
                38.93         34.68        2.3133    1   1   2
                39.68         12.12        2.2714    2   0   1
                40.78          4.00        2.2125    0   0   4
                43.61          8.56        2.0755    2   0   2
                45.30          4.44        2.0018    1   0   4
                49.59          9.98        1.8381    2   0   3
                51.44          1.22        1.7765    2   1   0
                52.54         14.63        1.7418    2   1   1
                53.43         22.58        1.7148    1   1   4
                55.47          4.08        1.6564    1   0   5
                55.76          3.31        1.6486    2   1   2
                57.18          3.91        1.6109    2   0   4
                58.95         11.23        1.5667    3   0   0
                60.87          7.26        1.5219    2   1   3
                62.93         10.12        1.4769    3   0   2
                63.02          1.68        1.4750    0   0   6
                66.09          5.63        1.4139    2   0   5
                66.43          1.02        1.4073    1   0   6
                67.63          2.21        1.3852    2   1   4
                69.25          3.28        1.3568    2   2   0
                72.92          3.62        1.2972    2   2   2
                73.01          3.60        1.2959    1   1   6
                73.42          4.51        1.2897    3   1   1
                75.88          2.84        1.2539    2   1   5
                76.12          1.13        1.2505    3   1   2
                76.21          1.79        1.2493    2   0   6
                78.31          1.94        1.2209    1   0   7
                80.56          2.90        1.1924    3   1   3
                82.88          1.19        1.1648    4   0   1
                83.60          1.27        1.1566    2   2   4
                88.35          1.39        1.1063    0   0   8
                89.85          1.21        1.0916    4   0   3
================================================================================
       XPOW Copyright 1993 Bob Downs, Ranjini Swaminathan and Kurt Bartelmehs
  For reference, see Downs et al. (1993) American Mineralogist 78, 1104-1107.