(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: als2k90, T = 600 C, P = 0.0 kbar, cell volume = 262.49 ang**3
      _database_code_amcsd 0003232

      CELL PARAMETERS:    6.4028   6.4028   6.4028   90.000   90.000   90.000
      SPACE GROUP: Fm3m      
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:    262.488
      Density (g/cm3):      1.845
      MAX. ABS. INTENSITY / VOLUME**2:      32.13513794    
      RIR:      5.670
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                27.87        100.00        3.2014    2   0   0         6
                39.82         64.33        2.2637    2   2   0        12
                49.30         19.92        1.8483    2   2   2         8
                57.58          8.29        1.6007    4   0   0         6
                65.16         20.67        1.4317    4   2   0        24
                72.29         14.04        1.3070    4   2   2        24
                85.86          3.99        1.1319    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.