Wadsleyite
      Hazen R M, Weinberger M B, Yang H, Prewitt C T
      American Mineralogist 85 (2000) 770-777
      Comparative high-pressure crystal chemistry of wadsleyite,
      beta-(Mg_1-xFe_x)2SiO4, with x=0 and 0.25
      Sample: P = 0.00 GPa, X = .00
      _database_code_amcsd 0002439

      CELL PARAMETERS:    5.6978  11.4620   8.2571   90.000   90.000   90.000
      SPACE GROUP: Imma      
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:    539.256
      Density (g/cm3):      3.465
      MAX. ABS. INTENSITY / VOLUME**2:      7.725289071    
      RIR:      0.726
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                27.80         46.70        3.2094    1   1   2         8
                31.21         14.48        2.8655    0   4   0         2
                31.40         14.28        2.8489    2   0   0         2
                33.48         52.47        2.6763    0   1   3         4
                34.20         60.41        2.6217    2   1   1         8
                35.69         19.61        2.5160    1   3   2         8
                36.25         36.59        2.4784    1   0   3         4
                36.76         97.28        2.4452    1   4   1         8
                38.23          4.15        2.3540    0   4   2         4
                38.39          1.49        2.3448    2   0   2         4
                40.39         12.81        2.2332    0   3   3         4
                40.85          3.22        2.2089    0   5   1         4
                41.00         31.00        2.2012    2   3   1         8
                43.86         35.12        2.0643    0   0   4         2
                44.86         78.80        2.0203    2   4   0         4
                47.51          4.61        1.9136    1   1   4         8
                48.13          4.29        1.8906    1   5   2         8
                48.57          2.09        1.8745    1   4   3         8
                51.91          7.62        1.7615    0   5   3         4
                52.03          2.01        1.7576    2   3   3         8
                52.42          7.24        1.7456    2   5   1         8
                52.91          7.56        1.7304    1   3   4         8
                53.72          5.28        1.7062    3   1   2         8
                54.81          2.38        1.6749    0   4   4         4
                54.93          7.64        1.6716    2   0   4         4
                58.16          8.15        1.5861    1   0   5         4
                58.71          4.42        1.5725    3   3   2         8
                59.10         10.39        1.5632    3   0   3         4
                59.45         15.35        1.5548    3   4   1         8
                61.14          4.16        1.5159    0   3   5         4
                62.73          3.89        1.4812    1   5   4         8
                63.24          4.55        1.4705    1   7   2         8
                64.54        100.00        1.4439    2   4   4         8
                65.10         26.98        1.4327    0   8   0         2
                65.53         27.17        1.4245    4   0   0         2
                65.88          1.41        1.4178    2   1   5         8
                66.44          8.18        1.4072    0   7   3         4
                66.87          5.14        1.3991    2   7   1         8
                67.51          1.18        1.3874    3   1   4         8
                68.00          1.53        1.3786    3   5   2         8
                70.25          3.58        1.3399    0   5   5         4
                70.93          1.76        1.3287    1   1   6         8
                71.93          2.15        1.3126    3   3   4         8
                74.07          1.68        1.2800    2   8   0         4
                74.37          1.82        1.2755    4   4   0         4
                75.27          1.80        1.2626    1   3   6         8
                75.63          7.24        1.2574    4   1   3         8
                76.43          4.35        1.2462    3   0   5         4
                76.85          6.02        1.2404    1   8   3         8
                79.87          2.81        1.2009    4   3   3         8
                80.48          1.40        1.1934    3   5   4         8
                80.94          2.01        1.1877    3   7   2         8
                81.84          4.85        1.1770    0   8   4         4
                82.23          4.76        1.1724    4   0   4         4
                83.67          1.61        1.1558    0   9   3         4
                84.07          3.83        1.1513    2   9   1         8
                88.06          1.15        1.1092    3   1   6         8
                88.22          2.46        1.1076    4   5   3         8
                89.66          1.11        1.0935    5   1   2         8
================================================================================
       XPOW Copyright 1993 Bob Downs, Ranjini Swaminathan and Kurt Bartelmehs
  For reference, see Downs et al. (1993) American Mineralogist 78, 1104-1107.