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 = 60.2 GPa
      Locality: Bahia, Brazil
      _database_code_amcsd 0002905

      CELL PARAMETERS:    4.3401   4.3401  12.9538   90.000   90.000  120.000
      SPACE GROUP: R-3c      
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:    211.314
      Density (g/cm3):      3.975
      MAX. ABS. INTENSITY / VOLUME**2:      16.88290532    
      RIR:      1.383
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                27.44          5.35        3.2509    0   1   2         6
                36.63        100.00        2.4534    1   0   4         6
                41.62          6.86        2.1700    1   1   0         6
                41.84         11.58        2.1590    0   0   6         2
                46.86         67.95        1.9390    1   1   3        12
                50.57         13.26        1.8049    2   0   2         6
                56.63          8.65        1.6254    0   2   4         6
                60.49         26.67        1.5305    1   1   6        12
                62.45         14.94        1.4871    0   1   8         6
                66.17          2.67        1.4122    2   1   1        12
                67.50          6.49        1.3876    1   2   2        12
                72.68          9.73        1.3010    2   1   4        12
                75.95         19.51        1.2529    3   0   0         6
                76.47          1.41        1.2456    1   2   5        12
                77.87          2.95        1.2267    2   0   8         6
                79.99          6.60        1.1995    1   1   9        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.