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 = 973 K, P = 8.21 GPa
      _database_code_amcsd 0008397

      CELL PARAMETERS:    4.1752   4.1752   4.1752   90.000   90.000   90.000
      SPACE GROUP: Fm3m      
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:     72.783
      Density (g/cm3):      3.678
      MAX. ABS. INTENSITY / VOLUME**2:      34.40201947    
      RIR:      3.046
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                37.30         11.17        2.4106    1   1   1         8
                43.34        100.00        2.0876    2   0   0         6
                62.97         50.10        1.4762    2   2   0        12
                75.52          6.35        1.2589    3   1   1        24
                79.53         13.55        1.2053    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.