Forsterite
      Henderson C M B, Redfern S A T, Smith R I, Knight K S, Charnock J M
      American Mineralogist 86 (2001) 1170-1187
      Composition and temperature dependence of cation ordering in Ni-Mg olivine solid solutions:
      A time-of-flight neutron powder diffraction and EXAFS study
      Sample: Mg50Ni50 at T = 750 C
      _database_code_amcsd 0002690

      CELL PARAMETERS:    4.7703  10.2835   5.9980   90.000   90.000   90.000
      SPACE GROUP: Pbnm      
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:    294.232
      Density (g/cm3):      3.952
      MAX. ABS. INTENSITY / VOLUME**2:      18.37802587    
      RIR:      1.514
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                17.25         42.10        5.1417    0   2   0         2
                20.52         18.25        4.3274    1   1   0         4
                22.78         21.10        3.9037    0   2   1         4
                23.83          8.16        3.7335    1   0   1         4
                25.38         18.34        3.5094    1   1   1         8
                25.47          6.19        3.4971    1   2   0         4
                29.57          3.31        3.0211    1   2   1         8
                32.16         70.40        2.7837    1   3   0         4
                34.63         16.96        2.5905    0   2   2         4
                34.90          5.24        2.5709    0   4   0         2
                35.55         43.11        2.5250    1   3   1         8
                36.45        100.00        2.4649    1   1   2         8
                37.72          6.92        2.3851    2   0   0         2
                38.08          7.29        2.3630    0   4   1         4
                38.76          4.19        2.3235    2   1   0         4
                39.59         16.51        2.2765    1   2   2         8
                39.83         10.86        2.2631    1   4   0         4
                41.69          7.58        2.1666    2   1   1         8
                41.75          3.16        2.1637    2   2   0         4
                44.40         13.16        2.0402    1   3   2         8
                46.38          1.23        1.9578    2   3   0         4
                46.53          5.13        1.9519    0   4   2         4
                48.18          8.15        1.8886    1   5   0         4
                50.27          3.11        1.8150    1   1   3         8
                50.67          2.26        1.8014    1   5   1         8
                52.12         55.45        1.7547    2   2   2         8
                52.32         20.41        1.7485    2   4   0         4
                52.74          1.86        1.7357    1   2   3         8
                54.68          6.95        1.6787    2   4   1         8
                55.78          6.47        1.6480    0   6   1         4
                56.10          1.12        1.6394    2   3   2         8
                56.68          9.63        1.6239    1   3   3         8
                57.68         10.11        1.5981    1   5   2         8
                58.48          4.31        1.5782    0   4   3         4
                58.76          4.71        1.5714    3   1   0         4
                60.95          2.21        1.5201    3   1   1         8
                61.15          1.47        1.5155    2   1   3         8
                61.38          6.17        1.5105    2   4   2         8
                61.51          2.24        1.5076    2   5   1         8
                61.88         17.26        1.4995    0   0   4         2
                62.41         25.28        1.4881    0   6   2         4
                64.61          4.53        1.4425    3   3   0         4
                64.76          1.89        1.4395    0   2   4         4
                65.93          1.17        1.4168    1   1   4         8
                66.61          9.90        1.4040    1   7   0         4
                66.69          3.66        1.4025    3   3   1         8
                67.26          8.58        1.3919    3   1   2         8
                69.34          7.37        1.3552    3   2   2         8
                69.51          2.51        1.3523    3   4   0         4
                71.46          9.05        1.3201    1   3   4         8
                71.52          1.75        1.3192    3   4   1         8
                71.71          1.03        1.3162    2   4   3         8
                72.66          2.01        1.3012    0   6   3         4
                73.05          1.34        1.2953    0   4   4         4
                74.79          2.89        1.2695    2   0   4         4
                75.27          3.46        1.2625    2   6   2         8
                75.59          1.05        1.2580    3   5   0         4
                77.72          1.17        1.2287    2   5   3         8
                80.55          3.36        1.1926    4   0   0         2
                81.46          1.38        1.1815    0   8   2         4
                82.06          2.75        1.1744    1   5   4         8
                82.45          1.71        1.1698    3   3   3         8
                83.30          4.96        1.1601    3   5   2         8
                84.71          1.13        1.1443    3   6   1         8
                85.26          5.50        1.1383    2   4   4         8
                85.89          2.31        1.1316    2   8   0         4
                86.98          1.52        1.1202    3   4   3         8
                88.82          2.20        1.1017    1   3   5         8
================================================================================
       XPOW Copyright 1993 Bob Downs, Ranjini Swaminathan and Kurt Bartelmehs
  For reference, see Downs et al. (1993) American Mineralogist 78, 1104-1107.