(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: als10k80, T = 350 C, P = 0.0 kbar, cell volume = 245.83 ang**3
      _database_code_amcsd 0003236

      CELL PARAMETERS:    6.2644   6.2644   6.2644   90.000   90.000   90.000
      SPACE GROUP: Fm3m      
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:    245.832
      Density (g/cm3):      1.927
      MAX. ABS. INTENSITY / VOLUME**2:      32.82934805    
      RIR:      5.547
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                28.50        100.00        3.1322    2   0   0         6
                40.74         63.62        2.2148    2   2   0        12
                50.47         19.56        1.8084    2   2   2         8
                58.98          8.11        1.5661    4   0   0         6
                66.78         20.18        1.4008    4   2   0        24
                74.15         13.74        1.2787    4   2   2        24
                88.24          3.96        1.1074    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.