Periclase
      Fei Y, Mao H K, Shu J F, Hu J
      Physics and Chemistry of Minerals 18 (1992) 416-422
      P-V-T equation of state of magnesiowustite (Mg0.6Fe0.4)O
      Sample: T = 590 deg C, P = 9.15 GPa
      rocksalt structure
      _database_code_amcsd 0007629

      CELL PARAMETERS:    4.2002   4.2002   4.2002   90.000   90.000   90.000
      SPACE GROUP: Fm3m      
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:     74.099
      Density (g/cm3):      4.743
      MAX. ABS. INTENSITY / VOLUME**2:      59.32693748    
      RIR:      4.073
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                37.07         37.01        2.4250    1   1   1         8
                43.07        100.00        2.1001    2   0   0         6
                62.55         51.22        1.4850    2   2   0        12
                75.00         13.97        1.2664    3   1   1        24
                78.96         14.15        1.2125    2   2   2         8
================================================================================
       XPOW Copyright 1993 Bob Downs, Ranjini Swaminathan and Kurt Bartelmehs
  For reference, see Downs et al. (1993) American Mineralogist 78, 1104-1107.