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 = .5, synthesized at 600 C, 1 GPa, 96 h
      _database_code_amcsd 0004336

      CELL PARAMETERS:    4.7818   4.7818  15.7028   90.000   90.000  120.000
      SPACE GROUP: R-3       
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:    310.950
      Density (g/cm3):      4.112
      MAX. ABS. INTENSITY / VOLUME**2:      55.34279484    
      RIR:      4.382
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                16.94          2.81        5.2343    0   0   3         2
                22.20          2.45        4.0043    1   0   1         6
                24.30         43.34        3.6629    0   1   2         6
                31.40        100.00        2.8490    1   0   4         6
                35.89          2.09        2.5024    0   1   5         6
                37.62         24.72        2.3909    1   1   0         6
                41.52          2.52        2.1748    2  -1   3         6
                41.52          9.11        2.1748    1   1   3         6
                44.12          2.03        2.0528    0   2   1         6
                45.29         21.04        2.0021    2   0   2         6
                49.79         10.96        1.8314    0   2   4         6
                51.52         18.68        1.7737    0   1   8         6
                51.79         14.82        1.7652    1   1   6         6
                51.79         13.20        1.7652    2  -1   6         6
                59.34          1.41        1.5575    3  -1   1         6
                60.29          7.58        1.5350   -1   3   2         6
                60.29          5.92        1.5350    1   2   2         6
                63.34          3.04        1.4683    1   0  10         6
                64.04          5.67        1.4539    3  -1   4         6
                64.04          3.99        1.4539    2   1   4         6
                65.53          3.88        1.4245    2   0   8         6
                66.32          1.73        1.4094    2  -1   9         6
                66.78          1.38        1.4009   -1   3   5         6
                67.90          7.57        1.3804    3   0   0         6
                72.19          2.78        1.3086    0   0  12         2
                76.07          2.97        1.2512    0   2  10         6
                78.09          2.16        1.2238   -1   3   8         6
                78.09          2.49        1.2238    1   2   8         6
                78.31          1.04        1.2210    0   3   6         6
                78.31          1.06        1.2210    3   0   6         6
                84.38          1.35        1.1479    1   1  12         6
                84.38          1.69        1.1479    2  -1  12         6
                88.12          1.42        1.1086    3  -1  10         6
                88.12          2.04        1.1086    2   1  10         6
                88.75          1.08        1.1023    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.