(K.9Na.1)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: als3k90, T = 500 C, P = 0.0 kbar, cell volume = 257.91 ang**3
      _database_code_amcsd 0003231

      CELL PARAMETERS:    6.3654   6.3654   6.3654   90.000   90.000   90.000
      SPACE GROUP: Fm3m      
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:    257.915
      Density (g/cm3):      1.878
      MAX. ABS. INTENSITY / VOLUME**2:      32.70670358    
      RIR:      5.670
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                28.04        100.00        3.1827    2   0   0         6
                40.07         64.10        2.2505    2   2   0        12
                49.61         19.81        1.8375    2   2   2         8
                57.95          8.24        1.5913    4   0   0         6
                65.59         20.51        1.4233    4   2   0        24
                72.79         13.95        1.2993    4   2   2        24
                86.49          3.98        1.1253    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.