(K.2Na.8)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: r56453, T = 550 C, P = 25.2 kbar, cell volume = 185.51 ang**3
      _database_code_amcsd 0003371

      CELL PARAMETERS:    5.7033   5.7033   5.7033   90.000   90.000   90.000
      SPACE GROUP: Fm3m      
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:    185.515
      Density (g/cm3):      2.208
      MAX. ABS. INTENSITY / VOLUME**2:      32.47591683    
      RIR:      4.790
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                27.08          4.30        3.2928    1   1   1         8
                31.37        100.00        2.8516    2   0   0         6
                44.95         61.02        2.0164    2   2   0        12
                53.27          1.08        1.7196    3   1   1        24
                55.84         18.26        1.6464    2   2   2         8
                65.46          7.45        1.4258    4   0   0         6
                74.39         18.49        1.2753    4   2   0        24
                82.94         12.75        1.1642    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.