(K.8Na.2)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: r55593, T = 600 C, P = 7.5 kbar, cell volume = 238.89 ang**3
      _database_code_amcsd 0003254

      CELL PARAMETERS:    6.2049   6.2049   6.2049   90.000   90.000   90.000
      SPACE GROUP: Fm3m      
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:    238.893
      Density (g/cm3):      1.983
      MAX. ABS. INTENSITY / VOLUME**2:      33.77585556    
      RIR:      5.546
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                28.78        100.00        3.1024    2   0   0         6
                41.15         63.25        2.1938    2   2   0        12
                50.98         19.38        1.7912    2   2   2         8
                59.60          8.02        1.5512    4   0   0         6
                67.51         19.95        1.3875    4   2   0        24
                74.99         13.59        1.2666    4   2   2        24
                89.31          3.95        1.0969    4   4   0        12
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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.