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 = .2, synthesized at 800 C, 1 GPa, 1 h
      _database_code_amcsd 0004341

      CELL PARAMETERS:    4.8638   4.8638  16.0679   90.000   90.000  120.000
      SPACE GROUP: R-3c      
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:    329.186
      Density (g/cm3):      4.685
      MAX. ABS. INTENSITY / VOLUME**2:      83.44796750    
      RIR:      5.800
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                23.85         66.26        3.7305    0   1   2         6
                30.76        100.00        2.9070    1   0   4         6
                33.46          2.21        2.6780    0   0   6         2
                36.96         29.64        2.4319    1   1   0         6
                40.75          6.64        2.2143    1   1   3        12
                44.47         21.76        2.0372    2   0   2         6
                48.82         12.26        1.8653    0   2   4         6
                50.33         18.20        1.8129    0   1   8         6
                50.71         28.40        1.8003    1   1   6        12
                59.16         14.05        1.5617    1   2   2        12
                61.80          3.59        1.5013    1   0  10         6
                62.78          9.70        1.4800    2   1   4        12
                64.06          4.27        1.4535    2   0   8         6
                66.61          6.65        1.4041    3   0   0         6
                70.30          2.32        1.3390    0   0  12         2
                74.24          2.85        1.2775    0   2  10         6
                76.33          4.39        1.2476    1   2   8        12
                76.63          1.24        1.2435    3   0   6         6
                76.63          1.24        1.2435    0   3   6         6
                82.18          3.02        1.1730    1   1  12        12
                85.95          3.08        1.1309    2   1  10        12
                86.82          1.37        1.1218    1   3   4        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.