(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: r55369, T = 600 C, P = 17.0 kbar, cell volume = 231.15 ang**3
      _database_code_amcsd 0003257

      CELL PARAMETERS:    6.1371   6.1371   6.1371   90.000   90.000   90.000
      SPACE GROUP: Fm3m      
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:    231.148
      Density (g/cm3):      2.049
      MAX. ABS. INTENSITY / VOLUME**2:      34.89340296    
      RIR:      5.544
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                29.10        100.00        3.0686    2   0   0         6
                41.62         62.82        2.1698    2   2   0        12
                51.59         19.17        1.7716    2   2   2         8
                60.33          7.91        1.5343    4   0   0         6
                68.36         19.68        1.3723    4   2   0        24
                75.96         13.43        1.2527    4   2   2        24
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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.