(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: r53585, T = 630 C, P = 19.2 kbar, cell volume = 189.94 ang**3
      _database_code_amcsd 0003380

      CELL PARAMETERS:    5.7483   5.7483   5.7483   90.000   90.000   90.000
      SPACE GROUP: Fm3m      
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:    189.941
      Density (g/cm3):      2.156
      MAX. ABS. INTENSITY / VOLUME**2:      31.74835281    
      RIR:      4.795
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                26.86          4.32        3.3188    1   1   1         8
                31.12        100.00        2.8742    2   0   0         6
                44.58         61.32        2.0323    2   2   0        12
                52.82          1.08        1.7332    3   1   1        24
                55.37         18.41        1.6594    2   2   2         8
                64.88          7.52        1.4371    4   0   0         6
                73.71         18.65        1.2854    4   2   0        24
                82.15         12.83        1.1734    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.