(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: r53221, T = 700 C, P = 15.6 kbar, cell volume = 235.81 ang**3
      _database_code_amcsd 0003265

      CELL PARAMETERS:    6.1781   6.1781   6.1781   90.000   90.000   90.000
      SPACE GROUP: Fm3m      
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:    235.811
      Density (g/cm3):      2.009
      MAX. ABS. INTENSITY / VOLUME**2:      34.21254285    
      RIR:      5.545
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                28.90        100.00        3.0891    2   0   0         6
                41.33         63.08        2.1843    2   2   0        12
                51.22         19.30        1.7835    2   2   2         8
                59.88          7.98        1.5445    4   0   0         6
                67.84         19.84        1.3815    4   2   0        24
                75.37         13.53        1.2611    4   2   2        24
                89.80          3.95        1.0921    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.