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 = 0, synthesized at 600 C, 1 GPa, 3 h
      _database_code_amcsd 0004324

      CELL PARAMETERS:    4.9207   4.9207  16.2968   90.000   90.000  120.000
      SPACE GROUP: R-3c      
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:    341.733
      Density (g/cm3):      5.026
      MAX. ABS. INTENSITY / VOLUME**2:      109.2866088    
      RIR:      7.080
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                23.56         74.49        3.7762    0   1   2         6
                30.35        100.00        2.9449    1   0   4         6
                32.98          3.56        2.7161    0   0   6         2
                36.52         32.66        2.4604    1   1   0         6
                40.24          5.05        2.2412    1   1   3        12
                43.92         22.82        2.0614    2   0   2         6
                48.20         13.44        1.8881    0   2   4         6
                49.60         19.22        1.8379    0   1   8         6
                50.02         29.64        1.8235    1   1   6        12
                58.40         15.37        1.5801    1   2   2        12
                60.86          4.10        1.5222    1   0  10         6
                61.95         10.75        1.4979    2   1   4        12
                63.14          4.84        1.4724    2   0   8         6
                65.74          6.91        1.4205    3   0   0         6
                69.17          2.48        1.3581    0   0  12         2
                73.10          3.19        1.2945    0   2  10         6
                75.20          5.01        1.2635    1   2   8        12
                75.53          1.55        1.2587    0   3   6         6
                75.53          1.55        1.2587    3   0   6         6
                80.84          3.61        1.1890    1   1  12        12
                84.59          3.55        1.1456    2   1  10        12
                85.56          1.55        1.1351    1   3   4        12
                86.71          1.08        1.1229    0   1  14         6
                86.94          1.11        1.1206    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.