(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: r55577, T = 500 C, P = 9.6 kbar, cell volume = 236.99 ang**3
      _database_code_amcsd 0003244

      CELL PARAMETERS:    6.1884   6.1884   6.1884   90.000   90.000   90.000
      SPACE GROUP: Fm3m      
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:    236.993
      Density (g/cm3):      1.999
      MAX. ABS. INTENSITY / VOLUME**2:      34.04394106    
      RIR:      5.546
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                28.85        100.00        3.0942    2   0   0         6
                41.26         63.15        2.1879    2   2   0        12
                51.13         19.33        1.7864    2   2   2         8
                59.78          7.99        1.5471    4   0   0         6
                67.71         19.88        1.3838    4   2   0        24
                75.22         13.55        1.2632    4   2   2        24
                89.61          3.95        1.0940    4   4   0        12
================================================================================
       XPOW Copyright 1993 Bob Downs, Ranjini Swaminathan and Kurt Bartelmehs
  For reference, see Downs et al. (1993) American Mineralogist 78, 1104-1107.