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 = 500 C
      _database_code_amcsd 0002685

      CELL PARAMETERS:    4.7598  10.2469   5.9800   90.000   90.000   90.000
      SPACE GROUP: Pbnm      
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:    291.666
      Density (g/cm3):      3.987
      MAX. ABS. INTENSITY / VOLUME**2:      18.34343384    
      RIR:      1.498
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                17.31         36.45        5.1234    0   2   0         2
                20.57         16.51        4.3168    1   1   0         4
                22.86         20.85        3.8907    0   2   1         4
                23.89          8.42        3.7241    1   0   1         4
                25.45         21.49        3.5001    1   1   1         8
                25.54          6.18        3.4872    1   2   0         4
                29.66          3.14        3.0124    1   2   1         8
                29.88          1.36        2.9900    0   0   2         2
                32.26         71.00        2.7751    1   3   0         4
                34.74         17.62        2.5824    0   2   2         4
                35.03          5.38        2.5617    0   4   0         2
                35.67         46.59        2.5172    1   3   1         8
                36.56        100.00        2.4580    1   1   2         8
                37.80          7.24        2.3799    2   0   0         2
                38.22          7.66        2.3548    0   4   1         4
                38.85          4.23        2.3182    2   1   0         4
                39.71         17.29        2.2699    1   2   2         8
                39.97         11.42        2.2558    1   4   0         4
                41.79          7.99        2.1615    2   1   1         8
                41.85          2.60        2.1584    2   2   0         4
                44.55         12.46        2.0340    1   3   2         8
                46.51          1.31        1.9527    2   3   0         4
                46.69          4.73        1.9454    0   4   2         4
                48.35          7.87        1.8823    1   5   0         4
                50.43          3.70        1.8097    1   1   3         8
                50.85          2.84        1.7955    1   5   1         8
                52.27         59.04        1.7501    2   2   2         8
                52.48         21.58        1.7436    2   4   0         4
                52.91          1.88        1.7306    1   2   3         8
                54.85          7.46        1.6739    2   4   1         8
                56.00          7.05        1.6422    0   6   1         4
                56.27          1.22        1.6349    2   3   2         8
                56.87         10.71        1.6190    1   3   3         8
                57.89         10.53        1.5929    1   5   2         8
                58.69          4.60        1.5732    0   4   3         4
                58.90          4.76        1.5679    3   1   0         4
                61.10          2.61        1.5167    3   1   1         8
                61.15          1.01        1.5156    3   2   0         4
                61.34          1.60        1.5114    2   1   3         8
                61.57          5.83        1.5062    2   4   2         8
                61.71          2.37        1.5031    2   5   1         8
                62.08         18.56        1.4950    0   0   4         2
                62.64         27.19        1.4830    0   6   2         4
                64.79          4.78        1.4389    3   3   0         4
                64.98          1.73        1.4351    0   2   4         4
                66.15          1.14        1.4127    1   1   4         8
                66.87         10.52        1.3992    1   7   0         4
                66.88          4.34        1.3990    3   3   1         8
                67.45          9.02        1.3886    3   1   2         8
                69.54          7.93        1.3519    3   2   2         8
                69.71          2.74        1.3489    3   4   0         4
                71.71          9.71        1.3162    1   3   4         8
                71.73          1.85        1.3158    3   4   1         8
                71.95          1.16        1.3124    2   4   3         8
                72.94          2.29        1.2969    0   6   3         4
                73.32          1.47        1.2912    0   4   4         4
                75.03          3.18        1.2659    2   0   4         4
                75.54          3.74        1.2586    2   6   2         8
                75.83          1.06        1.2546    3   5   0         4
                78.00          1.27        1.2251    2   5   3         8
                80.76          3.79        1.1900    4   0   0         2
                81.81          1.35        1.1774    0   8   2         4
                82.37          2.82        1.1707    1   5   4         8
                82.72          2.09        1.1667    3   3   3         8
                83.58          5.50        1.1569    3   5   2         8
                84.12          1.03        1.1508    2   7   2         8
                85.01          1.22        1.1410    3   6   1         8
                85.57          6.25        1.1349    2   4   4         8
                86.24          2.69        1.1279    2   8   0         4
                87.27          1.65        1.1171    3   4   3         8
                89.07          1.02        1.0992    4   1   2         8
                89.16          2.59        1.0983    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.