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 = 2773 K
      _database_code_amcsd 0008362

      CELL PARAMETERS:    4.3960   4.3960   4.3960   90.000   90.000   90.000
      SPACE GROUP: Fm3m      
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:     84.952
      Density (g/cm3):      3.151
      MAX. ABS. INTENSITY / VOLUME**2:      30.30519975    
      RIR:      3.132
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                35.37         10.27        2.5380    1   1   1         8
                41.06        100.00        2.1980    2   0   0         6
                59.47         52.19        1.5542    2   2   0        12
                71.13          6.31        1.3254    3   1   1        24
                74.82         14.18        1.2690    2   2   2         8
                89.09          5.79        1.0990    4   0   0         6
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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.