(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: r54390, T = 550 C, P = 13.2 kbar, cell volume = 206.67 ang**3
      _database_code_amcsd 0003322

      CELL PARAMETERS:    5.9123   5.9123   5.9123   90.000   90.000   90.000
      SPACE GROUP: Fm3m      
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:    206.666
      Density (g/cm3):      2.085
      MAX. ABS. INTENSITY / VOLUME**2:      32.32136486    
      RIR:      5.047
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                26.11          1.64        3.4135    1   1   1         8
                30.23        100.00        2.9562    2   0   0         6
                43.28         62.03        2.0903    2   2   0        12
                53.70         18.76        1.7067    2   2   2         8
                62.88          7.70        1.4781    4   0   0         6
                71.34         19.11        1.3220    4   2   0        24
                79.40         13.09        1.2068    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.