(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: r54490, T = 400 C, P = 16.9 kbar, cell volume = 200.18 ang**3
      _database_code_amcsd 0003311

      CELL PARAMETERS:    5.8498   5.8498   5.8498   90.000   90.000   90.000
      SPACE GROUP: Fm3m      
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:    200.181
      Density (g/cm3):      2.153
      MAX. ABS. INTENSITY / VOLUME**2:      33.33678438    
      RIR:      5.043
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                26.39          1.63        3.3774    1   1   1         8
                30.56        100.00        2.9249    2   0   0         6
                43.77         61.62        2.0682    2   2   0        12
                54.33         18.57        1.6887    2   2   2         8
                63.63          7.61        1.4625    4   0   0         6
                72.22         18.88        1.3081    4   2   0        24
                80.42         12.97        1.1941    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.