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 = 850 C
      _database_code_amcsd 0002692

      CELL PARAMETERS:    4.7750  10.2960   6.0054   90.000   90.000   90.000
      SPACE GROUP: Pbnm      
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:    295.248
      Density (g/cm3):      3.938
      MAX. ABS. INTENSITY / VOLUME**2:      18.04075353    
      RIR:      1.492
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                17.23         40.87        5.1480    0   2   0         2
                20.50         17.24        4.3318    1   1   0         4
                22.75         21.10        3.9085    0   2   1         4
                23.81          8.20        3.7376    1   0   1         4
                25.35         19.24        3.5132    1   1   1         8
                25.44          6.30        3.5009    1   2   0         4
                29.53          3.41        3.0245    1   2   1         8
                29.75          1.05        3.0027    0   0   2         2
                32.12         70.82        2.7869    1   3   0         4
                34.58         16.94        2.5937    0   2   2         4
                34.86          5.25        2.5740    0   4   0         2
                35.51         44.07        2.5279    1   3   1         8
                36.41        100.00        2.4678    1   1   2         8
                37.68          6.96        2.3875    2   0   0         2
                38.03          7.57        2.3658    0   4   1         4
                38.72          4.30        2.3258    2   1   0         4
                39.54         16.46        2.2792    1   2   2         8
                39.78         10.97        2.2658    1   4   0         4
                41.64          7.59        2.1688    2   1   1         8
                41.70          2.96        2.1659    2   2   0         4
                44.35         12.67        2.0427    1   3   2         8
                46.33          1.19        1.9599    2   3   0         4
                46.47          4.93        1.9542    0   4   2         4
                48.12          7.82        1.8909    1   5   0         4
                50.21          3.23        1.8172    1   1   3         8
                50.61          2.26        1.8036    1   5   1         8
                52.06         55.21        1.7566    2   2   2         8
                52.26         20.16        1.7504    2   4   0         4
                52.67          1.91        1.7378    1   2   3         8
                54.61          7.12        1.6805    2   4   1         8
                55.71          6.58        1.6500    0   6   1         4
                56.03          1.09        1.6412    2   3   2         8
                56.61          9.75        1.6258    1   3   3         8
                57.61         10.05        1.6000    1   5   2         8
                58.40          4.42        1.5802    0   4   3         4
                58.69          4.61        1.5730    3   1   0         4
                60.88          2.27        1.5217    3   1   1         8
                61.08          1.45        1.5172    2   1   3         8
                61.30          5.95        1.5122    2   4   2         8
                61.43          2.24        1.5093    2   5   1         8
                61.79         17.11        1.5013    0   0   4         2
                62.32         24.86        1.4899    0   6   2         4
                64.54          4.45        1.4439    3   3   0         4
                64.67          1.80        1.4413    0   2   4         4
                65.84          1.08        1.4186    1   1   4         8
                66.52          9.84        1.4057    1   7   0         4
                66.61          3.66        1.4039    3   3   1         8
                67.18          8.36        1.3934    3   1   2         8
                69.26          7.30        1.3566    3   2   2         8
                69.43          2.46        1.3538    3   4   0         4
                71.36          8.88        1.3217    1   3   4         8
                71.43          1.76        1.3206    3   4   1         8
                71.61          1.05        1.3177    2   4   3         8
                72.56          2.02        1.3028    0   6   3         4
                72.95          1.32        1.2969    0   4   4         4
                74.68          2.86        1.2709    2   0   4         4
                75.17          3.35        1.2640    2   6   2         8
                77.61          1.16        1.2302    2   5   3         8
                80.45          3.27        1.1938    4   0   0         2
                81.34          1.34        1.1829    0   8   2         4
                81.94          2.59        1.1758    1   5   4         8
                82.34          1.69        1.1711    3   3   3         8
                83.18          4.85        1.1613    3   5   2         8
                84.59          1.11        1.1455    3   6   1         8
                85.14          5.28        1.1396    2   4   4         8
                85.76          2.19        1.1329    2   8   0         4
                86.86          1.51        1.1214    3   4   3         8
                88.68          2.18        1.1030    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.