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 = 23.83 GPa
      Locality: synthetic
      _database_code_amcsd 0020785

      CELL PARAMETERS:    4.0824   4.0824   4.0824   90.000   90.000   90.000
      SPACE GROUP: Fm3m      
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:     68.037
      Density (g/cm3):      4.458
      MAX. ABS. INTENSITY / VOLUME**2:      46.95672344    
      RIR:      3.430
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                38.18         22.75        2.3570    1   1   1         8
                44.38        100.00        2.0412    2   0   0         6
                64.57         49.68        1.4433    2   2   0        12
                77.56          9.74        1.2309    3   1   1        24
                81.71         13.62        1.1785    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.