FeMnSiO4
      Redfern S A T, Henderson C M B, Knight K S, Wood B J
      European Journal of Mineralogy 9 (1997) 287-300
      High-temperature order-disorder in (Fe0.5Mn0.5)2SiO4 and (Mg0.5Mn0.5)2SiO4
      olivines: an in situ neutron diffraction study
      Sample: T = 800 C
      _database_code_amcsd 0006666

      CELL PARAMETERS:    4.8957  10.6711   6.2309   90.000   90.000   90.000
      SPACE GROUP: Pbnm      
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:    325.518
      Density (g/cm3):      4.139
      MAX. ABS. INTENSITY / VOLUME**2:      20.02847435    
      RIR:      1.576
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                16.62         11.90        5.3355    0   2   0         2
                19.95          6.31        4.4498    1   1   0         4
                21.93          5.88        4.0527    0   2   1         4
                23.10          3.63        3.8496    1   0   1         4
                24.58         52.07        3.6212    1   1   1         8
                24.68          7.06        3.6073    1   2   0         4
                28.59          4.97        3.1219    1   2   1         8
                28.65          5.86        3.1154    0   0   2         2
                31.08         98.67        2.8777    1   3   0         4
                33.30         28.10        2.6904    0   2   2         4
                33.59          6.89        2.6678    0   4   0         2
                34.33         51.29        2.6125    1   3   1         8
                35.16        100.00        2.5521    1   1   2         8
                36.64         16.39        2.4524    0   4   1         4
                36.71         12.85        2.4478    2   0   0         2
                37.70          7.76        2.3859    2   1   0         4
                38.17          8.96        2.3578    1   2   2         8
                38.43         10.97        2.3426    1   4   0         4
                40.49          5.00        2.2281    2   1   1         8
                42.78          3.21        2.1139    1   3   2         8
                43.18          2.88        2.0953    2   2   1         8
                44.72          3.81        2.0264    0   4   2         4
                46.41          1.65        1.9564    1   5   0         4
                48.03          1.27        1.8942    2   1   2         8
                48.36          8.18        1.8820    1   1   3         8
                48.79          1.81        1.8666    1   5   1         8
                50.40         55.74        1.8106    2   2   2         8
                50.61         14.79        1.8036    2   4   0         4
                50.72          2.55        1.7999    1   2   3         8
                51.37          1.23        1.7785    0   6   0         2
                52.84         11.91        1.7325    2   4   1         8
                53.59         11.36        1.7102    0   6   1         4
                54.48         10.80        1.6841    1   3   3         8
                55.46         16.05        1.6568    1   5   2         8
                56.12          7.49        1.6389    0   4   3         4
                57.10          3.31        1.6131    3   1   0         4
                59.16          4.07        1.5617    3   1   1         8
                59.19          4.38        1.5609    2   4   2         8
                59.21          1.42        1.5605    3   2   0         4
                59.33         16.04        1.5577    0   0   4         2
                59.33          2.73        1.5576    2   5   1         8
                59.88         14.72        1.5446    0   6   2         4
                61.23          1.42        1.5138    3   2   1         8
                62.63          4.95        1.4833    3   3   0         4
                63.96         10.19        1.4555    1   7   0         4
                64.59          3.66        1.4429    3   3   1         8
                65.12          7.47        1.4325    3   1   2         8
                65.90          1.39        1.4174    1   7   1         8
                66.72          2.45        1.4019    2   6   1         8
                67.08          5.85        1.3953    3   2   2         8
                68.49         10.83        1.3699    1   3   4         8
                68.96          2.09        1.3618    2   4   3         8
                69.14          2.22        1.3586    3   4   1         8
                69.59          3.68        1.3509    0   6   3         4
                69.93          1.34        1.3452    0   4   4         4
                71.83          3.89        1.3142    2   0   4         4
                72.34          1.94        1.3063    2   6   2         8
                74.63          1.48        1.2718    2   5   3         8
                77.91          1.57        1.2262    0   8   2         4
                78.08          2.50        1.2239    4   0   0         2
                79.39          1.59        1.2071    3   3   3         8
                80.20          5.55        1.1969    3   5   2         8
                81.36          1.26        1.1828    2   6   3         8
                81.68          3.34        1.1789    2   4   4         8
                83.62          1.53        1.1564    3   4   3         8
                84.78          2.11        1.1436    1   3   5         8
                85.78          1.69        1.1327    4   1   2         8
                87.58          2.93        1.1141    4   2   2         8
                87.58          2.75        1.1140    3   7   0         4
                87.74          1.20        1.1124    4   4   0         4
                89.36          2.06        1.0964    2   8   2         8
================================================================================
       XPOW Copyright 1993 Bob Downs, Ranjini Swaminathan and Kurt Bartelmehs
  For reference, see Downs et al. (1993) American Mineralogist 78, 1104-1107.