(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: als1k70, T = 650 C, P = 0.0 kbar, cell volume = 252.36 ang**3
      _database_code_amcsd 0003271

      CELL PARAMETERS:    6.3194   6.3194   6.3194   90.000   90.000   90.000
      SPACE GROUP: Fm3m      
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:    252.364
      Density (g/cm3):      1.835
      MAX. ABS. INTENSITY / VOLUME**2:      30.56955039    
      RIR:      5.425
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                28.24        100.00        3.1597    2   0   0         6
                40.37         64.10        2.2342    2   2   0        12
                50.00         19.81        1.8243    2   2   2         8
                58.41          8.23        1.5798    4   0   0         6
                66.13         20.49        1.4131    4   2   0        24
                73.40         13.92        1.2899    4   2   2        24
                87.28          3.98        1.1171    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.