(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: r56441, T = 700 C, P = 28.2 kbar, cell volume = 186.01 ang**3
      _database_code_amcsd 0003392

      CELL PARAMETERS:    5.7084   5.7084   5.7084   90.000   90.000   90.000
      SPACE GROUP: Fm3m      
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:    186.013
      Density (g/cm3):      2.202
      MAX. ABS. INTENSITY / VOLUME**2:      32.39249936    
      RIR:      4.791
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                27.06          4.30        3.2957    1   1   1         8
                31.34        100.00        2.8542    2   0   0         6
                44.91         61.05        2.0182    2   2   0        12
                53.22          1.08        1.7211    3   1   1        24
                55.79         18.28        1.6479    2   2   2         8
                65.39          7.46        1.4271    4   0   0         6
                74.31         18.50        1.2764    4   2   0        24
                82.85         12.76        1.1652    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.