Beryl
      Bragg W
      Proceedings of the Royal Society of London A111 (1926) 691-714
      The structure of beryl, Be3Al2Si6O18
      _cod_database_code 1010541
      _database_code_amcsd 0017446

      CELL PARAMETERS:    9.2100   9.2100   9.1700   90.000   90.000  120.000
      SPACE GROUP: P6/mcc    
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:    673.627
      Density (g/cm3):      3.953
      MAX. ABS. INTENSITY / VOLUME**2:      34.29238870    
      RIR:      2.824
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                11.09         30.59        7.9761    1   0   0         6
                19.27         33.04        4.6050    1   1   0         6
                19.36        100.00        4.5850    0   0   2         2
                22.29         28.64        3.9880    2   0   0         6
                22.37         15.41        3.9750    1   0   2        12
                27.45         77.30        3.2491    1   1   2        12
                29.63         11.64        3.0147    2   1   0        12
                29.69         24.38        3.0090    2   0   2        12
                31.23         16.45        2.8639    2   1   1        24
                33.71          2.58        2.6587    3   0   0         6
                35.64         15.85        2.5190    2   1   2        24
                39.17          1.73        2.3000    3   0   2        12
                39.30         16.06        2.2925    0   0   4         2
                42.01          3.44        2.1505    3   1   1        24
                44.13          6.20        2.0523    1   1   4        12
                45.53          2.63        1.9924    3   1   2        24
                45.65          7.79        1.9875    2   0   4        12
                49.83          4.74        1.8298    3   2   0        12
                52.58          5.26        1.7405    4   1   0        12
                52.72          5.50        1.7362    3   0   4        12
                53.95          3.86        1.6995    3   2   2        24
                56.66          4.11        1.6246    2   2   4        12
                57.80          3.10        1.5952    5   0   0         6
                58.95          2.13        1.5668    2   1   5        24
                60.29          1.54        1.5350    3   3   0         6
                60.59          6.06        1.5283    0   0   6         2
                61.52          2.86        1.5073    4   2   0        12
                63.96          3.25        1.4556    3   3   2        12
                64.21          4.40        1.4505    1   1   6        12
                65.15          5.71        1.4319    4   2   2        24
                65.24          5.87        1.4301    3   2   4        24
                65.39          1.37        1.4271    2   0   6        12
                68.64          2.13        1.3674    5   1   2        24
                68.88          3.98        1.3632    2   1   6        24
                74.26          1.68        1.2772    5   2   0        12
                74.29          6.84        1.2768    6   0   2        12
                75.48          2.94        1.2595    4   2   4        24
                78.66          1.05        1.2163    6   1   0        12
                84.19          2.41        1.1500    6   0   4        12
                84.53          2.44        1.1463    0   0   8         2
                87.41          2.11        1.1157    5   2   4        24
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       XPOW Copyright 1993 Bob Downs, Ranjini Swaminathan and Kurt Bartelmehs
  For reference, see Downs et al. (1993) American Mineralogist 78, 1104-1107.