Beryl
Diffraction data computed using the structure from the paper listed below,
along with the cell parameters refined from the powder pattern for R050347
      Artioli G, Rinaldi R, Stahl K, Zanazzi P F
      American Mineralogist 78 (1993) 762-768
      Structure refinements of beryl by single-crystal neutron and X-ray diffraction
      Sample no. 1, morganite, probed with X-rays, T = 295 K

      CELL PARAMETERS:   9.215448   9.215448   9.204733   90.00000   90.00000   120.0000
      SPACE GROUP: P6/mcc
      X-RAY WAVELENGTH:     1.541838
               2-THETA      INTENSITY    D-SPACING   H   K   L
                11.14        100.00        7.9808    1   0   0
                19.31          1.71        4.6077    1   1   0
                19.33         31.45        4.6024    0   0   2
                22.32          4.80        3.9904    2   0   0
                22.34         20.06        3.9869    1   0   2
                27.43         86.70        3.2563    1   1   2
                29.65          6.79        3.0165    2   1   0
                29.66         20.35        3.0150    2   0   2
                31.24         82.22        2.8665    2   1   1
                33.72          1.67        2.6603    3   0   0
                35.61         17.32        2.5229    2   1   2
                39.17          7.08        2.3012    0   0   4
                40.79          2.89        2.2135    3   1   0
                40.83          2.17        2.2111    1   0   4
                42.00          6.56        2.1521    3   1   1
                42.03          1.07        2.1510    2   1   3
                44.00          1.84        2.0587    1   1   4
                45.48          2.65        1.9952    4   0   0
                45.49          1.80        1.9948    3   1   2
                45.52          7.61        1.9935    2   0   4
                49.82          2.84        1.8309    3   2   0
                50.88          9.01        1.7951    3   1   3
                52.56          8.29        1.7416    4   1   0
                52.60         11.38        1.7404    3   0   4
                53.56          7.69        1.7112    4   1   1
                53.90          1.21        1.7012    3   2   2
                56.50          1.80        1.6288    4   1   2
                56.53         11.85        1.6281    2   2   4
                57.77          3.98        1.5962    5   0   0
                57.80          1.81        1.5953    3   1   4
                58.73          5.15        1.5723    3   2   3
                58.76          2.54        1.5714    2   1   5
                60.34          4.43        1.5341    0   0   6
                61.20         13.40        1.5146    4   1   3
                61.48          1.31        1.5082    4   2   0
                63.89          4.28        1.4569    3   3   2
                63.96          4.54        1.4556    1   1   6
                65.08          5.26        1.4332    4   2   2
                65.10          4.93        1.4328    3   2   4
                68.56          3.18        1.3686    5   1   2
                68.63          3.65        1.3674    2   1   6
                74.19          3.42        1.2780    5   2   0
                74.20          7.95        1.2778    6   0   2
                74.26          1.60        1.2769    2   2   6
                75.03          6.73        1.2658    5   2   1
                75.07          4.38        1.2651    4   1   5
                75.33          3.39        1.2614    4   2   4
                75.37          1.53        1.2609    3   1   6
                78.59          1.36        1.2171    6   1   0
                79.42          6.50        1.2064    4   3   3
                79.50          6.00        1.2054    2   1   7
                81.59          1.22        1.1797    5   2   3
                84.02          2.00        1.1516    6   0   4
                84.11          2.93        1.1506    0   0   8
                85.09          2.26        1.1398    4   3   4
                87.23          2.96        1.1172    5   2   4
                87.23          2.96        1.1172    5   2   4
       XPOW Copyright 1993 Bob Downs, Ranjini Swaminathan and Kurt Bartelmehs
  For reference, see Downs et al. (1993) American Mineralogist 78, 1104-1107.