(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: als6k80, T = 550 C, P = 0.0 kbar, cell volume = 253.30 ang**3
      _database_code_amcsd 0003248

      CELL PARAMETERS:    6.3272   6.3272   6.3272   90.000   90.000   90.000
      SPACE GROUP: Fm3m      
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:    253.300
      Density (g/cm3):      1.870
      MAX. ABS. INTENSITY / VOLUME**2:      31.86375449    
      RIR:      5.548
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                28.21        100.00        3.1636    2   0   0         6
                40.32         64.00        2.2370    2   2   0        12
                49.93         19.76        1.8265    2   2   2         8
                58.34          8.21        1.5818    4   0   0         6
                66.03         20.44        1.4148    4   2   0        24
                73.30         13.89        1.2915    4   2   2        24
                87.14          3.98        1.1185    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.