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, on cooling
      _database_code_amcsd 0002698

      CELL PARAMETERS:    4.7755  10.2926   6.0058   90.000   90.000   90.000
      SPACE GROUP: Pbnm      
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:    295.203
      Density (g/cm3):      3.939
      MAX. ABS. INTENSITY / VOLUME**2:      17.85012402    
      RIR:      1.476
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                17.23         39.76        5.1463    0   2   0         2
                20.50         16.71        4.3320    1   1   0         4
                22.76         21.12        3.9079    0   2   1         4
                23.80          8.44        3.7379    1   0   1         4
                25.35         20.32        3.5134    1   1   1         8
                25.44          6.31        3.5006    1   2   0         4
                29.54          3.43        3.0243    1   2   1         8
                29.75          1.22        3.0029    0   0   2         2
                32.12         70.73        2.7863    1   3   0         4
                34.58         16.95        2.5937    0   2   2         4
                34.87          5.40        2.5731    0   4   0         2
                35.52         45.34        2.5276    1   3   1         8
                36.40        100.00        2.4679    1   1   2         8
                37.67          7.04        2.3878    2   0   0         2
                38.05          7.81        2.3652    0   4   1         4
                38.71          4.29        2.3260    2   1   0         4
                39.54         16.64        2.2792    1   2   2         8
                39.79         10.96        2.2652    1   4   0         4
                41.64          7.74        2.1690    2   1   1         8
                41.70          2.79        2.1660    2   2   0         4
                44.35         12.63        2.0425    1   3   2         8
                46.33          1.27        1.9598    2   3   0         4
                46.48          4.73        1.9539    0   4   2         4
                48.14          7.69        1.8904    1   5   0         4
                50.20          3.38        1.8173    1   1   3         8
                50.62          2.29        1.8032    1   5   1         8
                52.06         55.74        1.7567    2   2   2         8
                52.27         20.36        1.7503    2   4   0         4
                52.67          1.91        1.7378    1   2   3         8
                54.62          7.26        1.6804    2   4   1         8
                55.73          6.58        1.6495    0   6   1         4
                56.03          1.16        1.6412    2   3   2         8
                56.61         10.02        1.6258    1   3   3         8
                57.62         10.05        1.5998    1   5   2         8
                58.41          4.51        1.5801    0   4   3         4
                58.69          4.58        1.5731    3   1   0         4
                60.87          2.37        1.5218    3   1   1         8
                61.07          1.48        1.5173    2   1   3         8
                61.30          5.76        1.5122    2   4   2         8
                61.44          2.23        1.5091    2   5   1         8
                61.79         17.30        1.5015    0   0   4         2
                62.34         25.14        1.4895    0   6   2         4
                64.54          4.43        1.4440    3   3   0         4
                64.67          1.76        1.4414    0   2   4         4
                65.83          1.04        1.4187    1   1   4         8
                66.54          9.96        1.4053    1   7   0         4
                66.61          3.75        1.4040    3   3   1         8
                67.18          8.38        1.3935    3   1   2         8
                69.25          7.33        1.3567    3   2   2         8
                69.43          2.54        1.3537    3   4   0         4
                71.36          8.85        1.3218    1   3   4         8
                71.43          1.74        1.3206    3   4   1         8
                71.61          1.08        1.3177    2   4   3         8
                72.57          2.03        1.3026    0   6   3         4
                72.95          1.34        1.2968    0   4   4         4
                74.68          2.88        1.2711    2   0   4         4
                75.18          3.41        1.2638    2   6   2         8
                77.62          1.16        1.2301    2   5   3         8
                80.44          3.29        1.1939    4   0   0         2
                81.37          1.34        1.1826    0   8   2         4
                81.95          2.57        1.1757    1   5   4         8
                82.34          1.73        1.1711    3   3   3         8
                83.19          4.87        1.1613    3   5   2         8
                84.60          1.15        1.1454    3   6   1         8
                85.14          5.33        1.1396    2   4   4         8
                85.79          2.19        1.1326    2   8   0         4
                86.86          1.48        1.1214    3   4   3         8
                88.68          2.24        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.