Periclase
      Matsui M, Ito E, Yamazaki D, Yoshino T, Guo X, Shan S, Higo Y, Funakoshi F I
      American Mineralogist 97 (2012) 176-183
      Static compression of (Mg0.83,Fe0.17)O and (Mg0.75,Fe0.25)O
      ferropericlase up to 58 GPa at 300, 700, and 1100 K
      Note: (Mg0.75,Fe0.25)O, T = 300 K, P = 31.78 GPa
      Locality: synthetic
      _database_code_amcsd 0020787

      CELL PARAMETERS:    4.0410   4.0410   4.0410   90.000   90.000   90.000
      SPACE GROUP: Fm3m      
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:     65.988
      Density (g/cm3):      4.596
      MAX. ABS. INTENSITY / VOLUME**2:      48.10251771    
      RIR:      3.408
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                38.59         23.04        2.3331    1   1   1         8
                44.86        100.00        2.0205    2   0   0         6
                65.31         49.30        1.4287    2   2   0        12
                78.50          9.74        1.2184    3   1   1        24
                82.73         13.55        1.1665    2   2   2         8
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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.