Periclase
      Dubrovinsky L S, Lazor P, Saxena S K, Haggkvist P, Weber H P,
      Le Bihan T, Hausermann D
      Physics and Chemistry of Minerals 26 (1999) 539-545
      Study of laser heated iron using third generation synchrotron
      X-ray radiation facility with imaging plate at high pressures
      Sample: P = 61 GPa, T = 300 K
      _database_code_amcsd 0008231

      CELL PARAMETERS:    3.8990   3.8990   3.8990   90.000   90.000   90.000
      SPACE GROUP: Fm3m      
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:     59.273
      Density (g/cm3):      4.516
      MAX. ABS. INTENSITY / VOLUME**2:      40.35475815    
      RIR:      2.910
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                40.05         12.58        2.2511    1   1   1         8
                46.59        100.00        1.9495    2   0   0         6
                68.01         47.54        1.3785    2   2   0        12
                81.96          6.43        1.1756    3   1   1        24
                86.46         13.07        1.1255    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.