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: Run1 at T = 873 K, P = 2.64 GPa
      _database_code_amcsd 0008374

      CELL PARAMETERS:    4.2202   4.2202   4.2202   90.000   90.000   90.000
      SPACE GROUP: Fm3m      
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:     75.162
      Density (g/cm3):      3.561
      MAX. ABS. INTENSITY / VOLUME**2:      33.52165511    
      RIR:      3.065
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                36.89         10.97        2.4365    1   1   1         8
                42.86        100.00        2.1101    2   0   0         6
                62.22         50.53        1.4921    2   2   0        12
                74.58          6.34        1.2724    3   1   1        24
                78.51         13.66        1.2183    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.