(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: r53029, T = 675 C, P = 18.1 kbar, cell volume = 204.90 ang**3
      _database_code_amcsd 0003339

      CELL PARAMETERS:    5.8954   5.8954   5.8954   90.000   90.000   90.000
      SPACE GROUP: Fm3m      
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:    204.899
      Density (g/cm3):      2.103
      MAX. ABS. INTENSITY / VOLUME**2:      32.59234756    
      RIR:      5.046
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                26.18          1.64        3.4037    1   1   1         8
                30.32        100.00        2.9477    2   0   0         6
                43.41         61.92        2.0843    2   2   0        12
                53.87         18.71        1.7019    2   2   2         8
                63.08          7.68        1.4739    4   0   0         6
                71.58         19.05        1.3183    4   2   0        24
                79.68         13.05        1.2034    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.