(K.8Na.2)Cl
      Walker D, Verma P K, Cranswick L M D, Jones R L, Clark S M, Buhre S
      American Mineralogist 89 (2004) 204-210
      Halite-sylvite thermoelasticity
      Sample: r53237, T = 600 C, P = 14.0 kbar, cell volume = 235.53 ang**3
      _database_code_amcsd 0003256

      CELL PARAMETERS:    6.1756   6.1756   6.1756   90.000   90.000   90.000
      SPACE GROUP: Fm3m      
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:    235.525
      Density (g/cm3):      2.011
      MAX. ABS. INTENSITY / VOLUME**2:      34.25361436    
      RIR:      5.545
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                28.92        100.00        3.0878    2   0   0         6
                41.35         63.07        2.1834    2   2   0        12
                51.24         19.29        1.7827    2   2   2         8
                59.91          7.97        1.5439    4   0   0         6
                67.87         19.83        1.3809    4   2   0        24
                75.40         13.52        1.2606    4   2   2        24
                89.85          3.95        1.0917    4   4   0        12
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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.