Periclase
      Zhang J
      Physics and Chemistry of Minerals 27 (2000) 145-148
      Effect of pressure on the thermal expansion of MgO up to 8.2 GPa
      Sample: Run3 at T = 300 K, P = 8.21 GPa
      _database_code_amcsd 0008390

      CELL PARAMETERS:    4.1451   4.1451   4.1451   90.000   90.000   90.000
      SPACE GROUP: Fm3m      
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:     71.221
      Density (g/cm3):      3.758
      MAX. ABS. INTENSITY / VOLUME**2:      35.00438571    
      RIR:      3.033
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                37.58         11.30        2.3932    1   1   1         8
                43.67        100.00        2.0726    2   0   0         6
                63.48         49.81        1.4655    2   2   0        12
                76.17          6.35        1.2498    3   1   1        24
                80.22         13.48        1.1966    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.