Magnesite
      Fiquet G, Guyot F, Kunz M, Matas J, Andrault D, Hanfland M
      American Mineralogist 87 (2002) 1261-1265
      Structural refinements of magnesite at very high pressure
      Sample: P = 41.3 GPa
      Locality: Bahia, Brazil
      _database_code_amcsd 0002901

      CELL PARAMETERS:    4.4044   4.4044  13.3797   90.000   90.000  120.000
      SPACE GROUP: R-3c      
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:    224.776
      Density (g/cm3):      3.737
      MAX. ABS. INTENSITY / VOLUME**2:      15.51932154    
      RIR:      1.352
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                26.91          7.00        3.3136    0   1   2         6
                35.70        100.00        2.5149    1   0   4         6
                40.45         12.94        2.2299    0   0   6         2
                40.98          6.51        2.2022    1   1   0         6
                45.96         72.40        1.9746    1   1   3        12
                49.71         12.51        1.8341    2   0   2         6
                55.46          9.60        1.6568    0   2   4         6
                58.94         28.88        1.5669    1   1   6        12
                60.44         15.67        1.5317    0   1   8         6
                65.07          2.13        1.4334    2   1   1        12
                66.32          6.21        1.4093    1   2   2        12
                71.22         10.54        1.3239    2   1   4        12
                74.65         20.86        1.2714    3   0   0         6
                74.80          1.15        1.2692    1   2   5        12
                75.63          3.32        1.2574    2   0   8         6
                77.46          7.42        1.2322    1   1   9        12
                87.49          4.46        1.1150    0   0  12         2
                89.47          1.41        1.0953    0   2  10         6
                89.82          5.08        1.0920    1   2   8        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.