(K.4Na.6)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: r57068, T = 650 C, P = 11.5 kbar, cell volume = 215.04 ang**3
      _database_code_amcsd 0003334

      CELL PARAMETERS:    5.9911   5.9911   5.9911   90.000   90.000   90.000
      SPACE GROUP: Fm3m      
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:    215.040
      Density (g/cm3):      2.004
      MAX. ABS. INTENSITY / VOLUME**2:      31.09195057    
      RIR:      5.052
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                25.76          1.66        3.4590    1   1   1         8
                29.83        100.00        2.9955    2   0   0         6
                42.69         62.53        2.1182    2   2   0        12
                52.94         19.02        1.7295    2   2   2         8
                61.96          7.83        1.4978    4   0   0         6
                70.26         19.42        1.3397    4   2   0        24
                78.16         13.26        1.2229    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.