(K.2Na.8)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: r53601, T = 675 C, P = 19.0 kbar, cell volume = 192.03 ang**3
      _database_code_amcsd 0003389

      CELL PARAMETERS:    5.7693   5.7693   5.7693   90.000   90.000   90.000
      SPACE GROUP: Fm3m      
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:    192.030
      Density (g/cm3):      2.133
      MAX. ABS. INTENSITY / VOLUME**2:      31.41530789    
      RIR:      4.797
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                26.76          4.32        3.3309    1   1   1         8
                31.00        100.00        2.8846    2   0   0         6
                44.41         61.46        2.0398    2   2   0        12
                52.61          1.08        1.7395    3   1   1        24
                55.15         18.47        1.6655    2   2   2         8
                64.62          7.55        1.4423    4   0   0         6
                73.39         18.72        1.2901    4   2   0        24
                81.78         12.87        1.1777    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.