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 = 150 C, P = 1 atm
      _database_code_amcsd 0000503

      CELL PARAMETERS:    4.2170   4.2170   4.2170   90.000   90.000   90.000
      SPACE GROUP: Fm3m      
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:     74.991
      Density (g/cm3):      3.569
      MAX. ABS. INTENSITY / VOLUME**2:      34.93351354    
      RIR:      3.187
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                36.92         10.42        2.4347    1   1   1         8
                42.89        100.00        2.1085    2   0   0         6
                62.27         52.42        1.4909    2   2   0        12
                74.65          6.16        1.2715    3   1   1        24
                78.59         14.71        1.2173    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.