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 = 1550 K
      _database_code_amcsd 0008232

      CELL PARAMETERS:    3.8970   3.8970   3.8970   90.000   90.000   90.000
      SPACE GROUP: Fm3m      
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:     59.182
      Density (g/cm3):      4.523
      MAX. ABS. INTENSITY / VOLUME**2:      40.40145686    
      RIR:      2.909
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                40.08         12.59        2.2499    1   1   1         8
                46.61        100.00        1.9485    2   0   0         6
                68.05         47.52        1.3778    2   2   0        12
                82.01          6.43        1.1750    3   1   1        24
                86.52         13.06        1.1250    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.