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: Mg80Ni20 at T = 1100 C
      _database_code_amcsd 0002720

      CELL PARAMETERS:    4.7961  10.3467   6.0457   90.000   90.000   90.000
      SPACE GROUP: Pbnm      
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:    300.011
      Density (g/cm3):      3.419
      MAX. ABS. INTENSITY / VOLUME**2:      10.63674429    
      RIR:      1.013
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                17.14         36.64        5.1733    0   2   0         2
                20.41          2.11        4.3513    1   1   0         4
                22.62         38.87        3.9307    0   2   1         4
                23.68         14.45        3.7574    1   0   1         4
                25.22         13.99        3.5317    1   1   1         8
                25.32          9.50        3.5172    1   2   0         4
                29.38          4.62        3.0401    1   2   1         8
                29.55          5.73        3.0229    0   0   2         2
                31.96         67.89        2.8001    1   3   0         4
                34.36          5.93        2.6100    0   2   2         4
                35.33         55.89        2.5408    1   3   1         8
                36.18        100.00        2.4826    1   1   2         8
                37.50          2.59        2.3980    2   0   0         2
                37.83          9.73        2.3781    0   4   1         4
                38.54          6.70        2.3361    2   1   0         4
                39.30         26.96        2.2925    1   2   2         8
                39.59         18.13        2.2767    1   4   0         4
                41.44         11.86        2.1791    2   1   1         8
                41.51          1.71        2.1757    2   2   0         4
                44.08          8.45        2.0542    1   3   2         8
                46.10          2.01        1.9689    2   3   0         4
                46.19          4.55        1.9653    0   4   2         4
                47.88          7.31        1.9000    1   5   0         4
                49.87          2.63        1.8287    1   1   3         8
                50.34          1.84        1.8126    1   5   1         8
                51.77         53.59        1.7658    2   2   2         8
                52.00         18.22        1.7586    2   4   0         4
                52.32          2.93        1.7486    1   2   3         8
                54.33          9.67        1.6886    2   4   1         8
                55.41          8.39        1.6583    0   6   1         4
                55.72          1.85        1.6498    2   3   2         8
                56.24         12.10        1.6357    1   3   3         8
                57.27          5.79        1.6086    1   5   2         8
                58.02          6.25        1.5897    0   4   3         4
                58.41          3.70        1.5799    3   1   0         4
                60.57          2.12        1.5286    3   1   1         8
                60.63          1.65        1.5274    3   2   0         4
                60.69          2.17        1.5259    2   1   3         8
                60.95          5.44        1.5201    2   4   2         8
                61.11          3.40        1.5166    2   5   1         8
                61.34         19.62        1.5114    0   0   4         2
                61.95         28.54        1.4979    0   6   2         4
                64.20          1.68        1.4508    0   2   4         4
                64.21          3.21        1.4504    3   3   0         4
                66.15          9.26        1.4125    1   7   0         4
                66.27          4.02        1.4104    3   3   1         8
                66.81          7.19        1.4002    3   1   2         8
                68.87         11.24        1.3633    3   2   2         8
                69.07          3.96        1.3599    3   4   0         4
                70.85          7.78        1.3300    1   3   4         8
                71.05          2.47        1.3268    3   4   1         8
                71.16          1.20        1.3250    2   4   3         8
                72.08          2.48        1.3102    0   6   3         4
                74.16          1.93        1.2787    2   0   4         4
                74.72          1.69        1.2704    2   6   2         8
                75.50          1.03        1.2592    1   4   4         8
                75.98          1.38        1.2525    3   0   3         4
                77.11          1.76        1.2369    2   5   3         8
                80.03          3.11        1.1990    4   0   0         2
                80.83          1.20        1.1891    0   8   2         4
                81.35          2.44        1.1828    1   5   4         8
                81.80          1.19        1.1774    0   2   5         4
                81.82          1.79        1.1772    3   3   3         8
                82.69          3.83        1.1670    3   5   2         8
                83.16          1.28        1.1617    2   7   2         8
                83.82          1.04        1.1541    1   8   2         8
                84.11          1.74        1.1509    3   6   1         8
                84.53          3.98        1.1463    2   4   4         8
                85.26          1.82        1.1383    2   8   0         4
                86.30          2.10        1.1273    3   4   3         8
                87.97          2.57        1.1101    1   3   5         8
                88.16          1.37        1.1081    4   1   2         8
                89.80          1.14        1.0922    3   1   4         8
================================================================================
       XPOW Copyright 1993 Bob Downs, Ranjini Swaminathan and Kurt Bartelmehs
  For reference, see Downs et al. (1993) American Mineralogist 78, 1104-1107.