(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: als6k20, T = 650 C, P = 0.0 kbar, cell volume = 214.39 ang**3
      _database_code_amcsd 0003382

      CELL PARAMETERS:    5.9851   5.9851   5.9851   90.000   90.000   90.000
      SPACE GROUP: Fm3m      
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:    214.395
      Density (g/cm3):      1.910
      MAX. ABS. INTENSITY / VOLUME**2:      28.21825120    
      RIR:      4.810
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                25.78          4.39        3.4555    1   1   1         8
                29.86        100.00        2.9925    2   0   0         6
                42.73         62.87        2.1161    2   2   0        12
                50.58          1.09        1.8046    3   1   1        24
                53.00         19.17        1.7277    2   2   2         8
                62.03          7.89        1.4963    4   0   0         6
                70.34         19.56        1.3383    4   2   0        24
                78.25         13.32        1.2217    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.