Periclase
      Hazen R M
      American Mineralogist 61 (1976) 266-271
      Effects of temperature and pressure on the cell dimension and X-ray temperature
      factors of periclase
      T = 23 C, P = 24 kbar
      _database_code_amcsd 0000515

      CELL PARAMETERS:    4.1930   4.1930   4.1930   90.000   90.000   90.000
      SPACE GROUP: Fm3m      
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:     73.718
      Density (g/cm3):      3.631
      MAX. ABS. INTENSITY / VOLUME**2:      35.48482803    
      RIR:      3.182
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                37.14         11.17        2.4208    1   1   1         8
                43.15        100.00        2.0965    2   0   0         6
                62.67         52.43        1.4824    2   2   0        12
                75.15          7.09        1.2642    3   1   1        24
                79.12         14.79        1.2104    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.