Eudidymite
      Ito T
      American Mineralogist 32 (1947) 442-453
      The structure of eudidymite (HNaBeSi3O8)
      Note: this structure does not make any sense
      _database_code_amcsd 0000043

      CELL PARAMETERS:   12.6200   7.3700  13.9900   90.000  103.720   90.000
      SPACE GROUP: C2/c      
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:   1264.073
      Density (g/cm3):      2.567
      MAX. ABS. INTENSITY / VOLUME**2:      31.73753406    
      RIR:      4.026
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                13.03        100.00        6.7954    0   0   2         2
                14.45          3.92        6.1300    2   0   0         2
                14.72          1.53        6.0160   -1   1   1         4
                16.18          3.12        5.4780    1   1   1         4
                17.03         23.60        5.2072   -2   0   2         2
                24.15          6.04        3.6850    0   2   0         2
                27.54          6.09        3.2394    0   2   2         4
                28.22          9.52        3.1627   -2   2   1         4
                28.26          8.66        3.1583    2   2   0         4
                28.98         10.23        3.0812   -4   0   2         2
                29.14          5.24        3.0650    4   0   0         2
                32.52         16.24        2.7535   -2   2   3         4
                34.45          6.31        2.6036   -4   0   4         2
                36.40          1.90        2.4686   -2   2   4         4
                37.53          1.01        2.3965   -4   2   1         4
                38.07          4.95        2.3638   -4   2   2         4
                41.08          4.66        2.1972   -2   2   5         4
                41.27          2.49        2.1875    0   2   5         4
                42.51          1.38        2.1264   -4   2   4         4
                42.85          4.17        2.1104    4   2   2         4
                43.10          2.07        2.0989   -6   0   2         2
                43.70          6.05        2.0716   -4   0   6         2
                46.57          2.07        1.9500    4   2   3         4
                49.54          1.46        1.8401    6   0   2         2
                55.26          2.27        1.6624   -4   0   8         2
                55.36          1.41        1.6595   -6   2   5         4
                56.13          2.28        1.6387    4   2   5         4
                60.78          1.18        1.5240    2   4   4         4
                64.72          1.23        1.4403   -8   2   1         4
                64.94          1.80        1.4359    2   4   5         4
                67.66          1.07        1.3847   -6   4   2         4
                67.73          1.13        1.3835   -6   4   1         4
                68.58          1.05        1.3683    6   4   0         4
                69.76          1.66        1.3481    2   4   6         4
================================================================================
       XPOW Copyright 1993 Bob Downs, Ranjini Swaminathan and Kurt Bartelmehs
  For reference, see Downs et al. (1993) American Mineralogist 78, 1104-1107.