(K.7Na.3)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: als2k70, T = 600 C, P = 0.0 kbar, cell volume = 249.59 ang**3
      _database_code_amcsd 0003270

      CELL PARAMETERS:    6.2962   6.2962   6.2962   90.000   90.000   90.000
      SPACE GROUP: Fm3m      
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:    249.595
      Density (g/cm3):      1.855
      MAX. ABS. INTENSITY / VOLUME**2:      30.90873329    
      RIR:      5.425
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                28.35        100.00        3.1481    2   0   0         6
                40.52         63.96        2.2260    2   2   0        12
                50.19         19.74        1.8176    2   2   2         8
                58.65          8.20        1.5740    4   0   0         6
                66.40         20.40        1.4079    4   2   0        24
                73.72         13.86        1.2852    4   2   2        24
                87.68          3.97        1.1130    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.