(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: als4k70, T = 500 C, P = 0.0 kbar, cell volume = 244.83 ang**3
      _database_code_amcsd 0003268

      CELL PARAMETERS:    6.2559   6.2559   6.2559   90.000   90.000   90.000
      SPACE GROUP: Fm3m      
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:    244.833
      Density (g/cm3):      1.891
      MAX. ABS. INTENSITY / VOLUME**2:      31.50843717    
      RIR:      5.425
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                28.54        100.00        3.1279    2   0   0         6
                40.80         63.71        2.2118    2   2   0        12
                50.54         19.61        1.8059    2   2   2         8
                59.07          8.13        1.5640    4   0   0         6
                66.89         20.23        1.3989    4   2   0        24
                74.27         13.76        1.2770    4   2   2        24
                88.39          3.96        1.1059    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.