Otavite
      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 = .1, synthesized at 600 C, 1 GPa, 3 h
      _database_code_amcsd 0004325

      CELL PARAMETERS:    4.8950   4.8950  16.1938   90.000   90.000  120.000
      SPACE GROUP: R-3c      
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:    336.035
      Density (g/cm3):      4.850
      MAX. ABS. INTENSITY / VOLUME**2:      97.51186080    
      RIR:      6.546
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                23.69         68.63        3.7556    0   1   2         6
                30.53        100.00        2.9278    1   0   4         6
                33.19          2.80        2.6990    0   0   6         2
                36.72         31.26        2.4475    1   1   0         6
                40.47          5.72        2.2291    1   1   3        12
                44.17         22.26        2.0505    2   0   2         6
                48.48         12.87        1.8778    0   2   4         6
                49.93         19.01        1.8267    0   1   8         6
                50.33         28.87        1.8130    1   1   6        12
                58.74         14.89        1.5718    1   2   2        12
                61.28          3.79        1.5128    1   0  10         6
                62.32         10.30        1.4898    2   1   4        12
                63.55          4.62        1.4639    2   0   8         6
                66.13          6.86        1.4131    3   0   0         6
                69.68          2.49        1.3495    0   0  12         2
                73.61          3.07        1.2868    0   2  10         6
                75.71          4.79        1.2563    1   2   8        12
                76.02          1.41        1.2519    0   3   6         6
                76.02          1.41        1.2519    3   0   6         6
                81.44          3.43        1.1818    1   1  12        12
                85.20          3.41        1.1390    2   1  10        12
                86.12          1.53        1.1291    1   3   4        12
                87.39          1.00        1.1159    0   1  14         6
                87.53          1.07        1.1145    2   2   6        12
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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.