(K.4Na.6)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: r57212, T = 450 C, P = 20.6 kbar, cell volume = 199.95 ang**3
      _database_code_amcsd 0003314

      CELL PARAMETERS:    5.8475   5.8475   5.8475   90.000   90.000   90.000
      SPACE GROUP: Fm3m      
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:    199.945
      Density (g/cm3):      2.155
      MAX. ABS. INTENSITY / VOLUME**2:      33.37485698    
      RIR:      5.042
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                26.40          1.63        3.3761    1   1   1         8
                30.58        100.00        2.9237    2   0   0         6
                43.79         61.60        2.0674    2   2   0        12
                54.35         18.56        1.6880    2   2   2         8
                63.65          7.60        1.4619    4   0   0         6
                72.26         18.87        1.3075    4   2   0        24
                80.46         12.96        1.1936    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.