Magnesite
      Bromiley F A, Boffa Ballaran T, Langenhorst F, Seifert F
      American Mineralogist 92 (2007) 829-836
      Order and miscibility in the otavite - magnesite solid solution
      Locality: synthetic
      Sample: X_Mg = .55, synthesized at 600 C, 1 GPa, 19 h
      _database_code_amcsd 0004335

      CELL PARAMETERS:    4.7752   4.7752  15.6730   90.000   90.000  120.000
      SPACE GROUP: R-3       
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:    309.504
      Density (g/cm3):      3.990
      MAX. ABS. INTENSITY / VOLUME**2:      50.16284268    
      RIR:      4.094
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                16.97          3.23        5.2243    0   0   3         2
                22.23          1.05        3.9986    1   0   1         6
                24.34         38.69        3.6574    0   1   2         6
                31.45        100.00        2.8443    1   0   4         6
                35.95          1.18        2.4981    0   1   5         6
                37.67         23.58        2.3876    1   1   0         6
                41.59          3.82        2.1716    2  -1   3         6
                41.59          8.24        2.1716    1   1   3         6
                44.18          1.70        2.0500    0   2   1         6
                45.36         20.87        1.9993    2   0   2         6
                49.87         10.83        1.8287    0   2   4         6
                51.62         18.75        1.7705    0   1   8         6
                51.88         11.64        1.7623    2  -1   6         6
                51.88         15.85        1.7623    1   1   6         6
                59.43          1.27        1.5553    3  -1   1         6
                60.39          7.23        1.5329   -1   3   2         6
                60.39          5.84        1.5329    1   2   2         6
                63.47          2.89        1.4656    1   0  10         6
                64.15          5.78        1.4518    3  -1   4         6
                64.15          3.58        1.4518    2   1   4         6
                65.65          3.62        1.4222    2   0   8         6
                66.45          1.73        1.4070    2  -1   9         6
                66.89          1.34        1.3988   -1   3   5         6
                68.01          7.61        1.3785    3   0   0         6
                72.35          2.73        1.3061    0   0  12         2
                76.23          2.73        1.2490    0   2  10         6
                78.24          2.25        1.2218    1   2   8         6
                78.24          2.35        1.2218   -1   3   8         6
                84.57          1.97        1.1458    2  -1  12         6
                84.57          1.09        1.1458    1   1  12         6
                88.30          2.18        1.1067    2   1  10         6
                88.30          1.21        1.1067    3  -1  10         6
                88.91          1.09        1.1008    1   3   4         6
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       XPOW Copyright 1993 Bob Downs, Ranjini Swaminathan and Kurt Bartelmehs
  For reference, see Downs et al. (1993) American Mineralogist 78, 1104-1107.