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 = 2.72 GPa, X = .25
      _database_code_amcsd 0002446

      CELL PARAMETERS:    5.6951  11.4628   8.2515   90.000   90.000   90.000
      SPACE GROUP: Imma      
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:    538.673
      Density (g/cm3):      3.858
      MAX. ABS. INTENSITY / VOLUME**2:      10.12797866    
      RIR:      0.855
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                13.22          7.65        6.6969    0   1   1         4
                15.46          1.63        5.7314    0   2   0         2
                18.93          3.99        4.6871    1   0   1         4
                25.69          2.52        3.4672    0   3   1         4
                27.81         33.07        3.2077    1   1   2         8
                31.21         13.41        2.8657    0   4   0         2
                31.42          9.13        2.8475    2   0   0         2
                33.51         56.31        2.6746    0   1   3         4
                34.22         67.30        2.6205    2   1   1         8
                35.70         16.15        2.5152    1   3   2         8
                36.27         37.52        2.4768    1   0   3         4
                36.76        100.00        2.4449    1   4   1         8
                39.64          1.33        2.2736    1   2   3         8
                40.41         14.58        2.2323    0   3   3         4
                40.85          4.99        2.2089    0   5   1         4
                41.02         35.10        2.2005    2   3   1         8
                43.89         39.92        2.0629    0   0   4         2
                44.87         86.09        2.0199    2   4   0         4
                47.55          3.81        1.9124    1   1   4         8
                48.14          4.06        1.8903    1   5   2         8
                48.59          4.36        1.8739    1   4   3         8
                49.25          1.99        1.8500    3   0   1         4
                51.92          8.38        1.7610    0   5   3         4
                52.06          4.79        1.7568    2   3   3         8
                52.43          8.58        1.7453    2   5   1         8
                52.94          5.91        1.7295    1   3   4         8
                53.75          3.66        1.7054    3   1   2         8
                54.83          1.45        1.6742    0   4   4         4
                54.96          6.51        1.6706    2   0   4         4
                56.32          1.33        1.6335    0   1   5         4
                58.20          8.03        1.5851    1   0   5         4
                58.74          3.51        1.5719    3   3   2         8
                59.13         10.98        1.5624    3   0   3         4
                59.47         14.85        1.5543    3   4   1         8
                61.17          4.86        1.5150    0   3   5         4
                61.96          1.62        1.4978    2   5   3         8
                62.75          3.15        1.4807    1   5   4         8
                63.24          3.05        1.4704    1   7   2         8
                64.57         97.84        1.4432    2   4   4         8
                65.10         26.17        1.4329    0   8   0         2
                65.57         25.92        1.4238    4   0   0         2
                65.93          2.27        1.4169    2   1   5         8
                66.45          8.52        1.4071    0   7   3         4
                66.88          5.99        1.3990    2   7   1         8
                67.55          1.05        1.3866    3   1   4         8
                68.03          1.39        1.3782    3   5   2         8
                70.28          3.91        1.3394    0   5   5         4
                70.98          1.65        1.3278    1   1   6         8
                71.97          1.63        1.3120    3   3   4         8
                74.07          1.06        1.2799    2   8   0         4
                74.40          1.61        1.2751    4   4   0         4
                75.32          1.08        1.2618    1   3   6         8
                75.67          7.60        1.2568    4   1   3         8
                76.48          4.40        1.2455    3   0   5         4
                76.86          6.21        1.2403    1   8   3         8
                76.89          1.20        1.2399    0   4   6         4
                78.19          1.61        1.2225    2   8   2         8
                79.92          3.08        1.2004    4   3   3         8
                80.52          1.10        1.1929    3   5   4         8
                80.96          1.33        1.1875    3   7   2         8
                81.85          6.01        1.1768    0   8   4         4
                82.28          5.88        1.1718    4   0   4         4
                83.68          1.81        1.1557    0   9   3         4
                84.08          4.14        1.1513    2   9   1         8
                88.13          1.10        1.1085    3   1   6         8
                88.26          2.68        1.1072    4   5   3         8
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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.