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 = 650 C
      _database_code_amcsd 0002688

      CELL PARAMETERS:    4.7663  10.2672   5.9907   90.000   90.000   90.000
      SPACE GROUP: Pbnm      
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:    293.160
      Density (g/cm3):      3.966
      MAX. ABS. INTENSITY / VOLUME**2:      18.26784846    
      RIR:      1.500
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                17.27         38.65        5.1336    0   2   0         2
                20.54         17.18        4.3231    1   1   0         4
                22.81         21.03        3.8981    0   2   1         4
                23.86          8.35        3.7298    1   0   1         4
                25.41         20.20        3.5056    1   1   1         8
                25.50          6.18        3.4929    1   2   0         4
                29.60          3.23        3.0175    1   2   1         8
                29.83          1.17        2.9953    0   0   2         2
                32.20         70.83        2.7800    1   3   0         4
                34.67         17.31        2.5871    0   2   2         4
                34.96          5.33        2.5668    0   4   0         2
                35.60         45.16        2.5217    1   3   1         8
                36.49        100.00        2.4621    1   1   2         8
                37.75          7.10        2.3831    2   0   0         2
                38.14          7.52        2.3594    0   4   1         4
                38.79          4.22        2.3214    2   1   0         4
                39.64         16.89        2.2738    1   2   2         8
                39.89         11.17        2.2599    1   4   0         4
                41.73          7.82        2.1646    2   1   1         8
                41.79          2.82        2.1616    2   2   0         4
                44.46         12.68        2.0376    1   3   2         8
                46.43          1.28        1.9557    2   3   0         4
                46.60          4.91        1.9491    0   4   2         4
                48.26          7.94        1.8859    1   5   0         4
                50.33          3.44        1.8128    1   1   3         8
                50.75          2.57        1.7988    1   5   1         8
                52.18         57.32        1.7528    2   2   2         8
                52.39         20.95        1.7465    2   4   0         4
                52.81          1.88        1.7336    1   2   3         8
                54.75          7.24        1.6767    2   4   1         8
                55.88          6.82        1.6454    0   6   1         4
                56.17          1.19        1.6376    2   3   2         8
                56.76         10.23        1.6218    1   3   3         8
                57.77         10.29        1.5959    1   5   2         8
                58.57          4.48        1.5761    0   4   3         4
                58.81          4.71        1.5701    3   1   0         4
                61.01          2.43        1.5188    3   1   1         8
                61.23          1.54        1.5139    2   1   3         8
                61.46          5.90        1.5087    2   4   2         8
                61.60          2.31        1.5057    2   5   1         8
                61.96         17.91        1.4977    0   0   4         2
                62.51         26.18        1.4858    0   6   2         4
                64.68          4.65        1.4410    3   3   0         4
                64.85          1.78        1.4377    0   2   4         4
                66.02          1.13        1.4152    1   1   4         8
                66.72         10.20        1.4019    1   7   0         4
                66.77          4.02        1.4011    3   3   1         8
                67.34          8.75        1.3906    3   1   2         8
                69.42          7.64        1.3539    3   2   2         8
                69.59          2.63        1.3509    3   4   0         4
                71.56          9.35        1.3185    1   3   4         8
                71.61          1.81        1.3178    3   4   1         8
                71.81          1.10        1.3146    2   4   3         8
                72.78          2.17        1.2994    0   6   3         4
                73.16          1.40        1.2936    0   4   4         4
                74.88          3.04        1.2681    2   0   4         4
                75.39          3.59        1.2608    2   6   2         8
                75.69          1.04        1.2566    3   5   0         4
                77.83          1.22        1.2272    2   5   3         8
                80.63          3.55        1.1916    4   0   0         2
                81.61          1.33        1.1797    0   8   2         4
                82.19          2.75        1.1728    1   5   4         8
                82.56          1.90        1.1685    3   3   3         8
                83.41          5.21        1.1587    3   5   2         8
                84.83          1.18        1.1429    3   6   1         8
                85.39          5.83        1.1369    2   4   4         8
                86.04          2.48        1.1300    2   8   0         4
                87.10          1.58        1.1189    3   4   3         8
                88.96          2.40        1.1003    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.