Periclase
      Fiquet G, Richet P, Montagnac G
      Physics and Chemistry of Minerals 27 (1999) 103-111
      High-temperature thermal expansion of lime, periclase,
      corundum and spinel
      Sample: Re wire, T = 2573 K
      _database_code_amcsd 0008360

      CELL PARAMETERS:    4.3710   4.3710   4.3710   90.000   90.000   90.000
      SPACE GROUP: Fm3m      
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:     83.511
      Density (g/cm3):      3.205
      MAX. ABS. INTENSITY / VOLUME**2:      30.74165823    
      RIR:      3.123
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                35.57         10.37        2.5236    1   1   1         8
                41.31        100.00        2.1855    2   0   0         6
                59.85         51.96        1.5454    2   2   0        12
                71.60          6.31        1.3179    3   1   1        24
                75.32         14.10        1.2618    2   2   2         8
                89.74          5.78        1.0927    4   0   0         6
================================================================================
       XPOW Copyright 1993 Bob Downs, Ranjini Swaminathan and Kurt Bartelmehs
  For reference, see Downs et al. (1993) American Mineralogist 78, 1104-1107.