(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: b&w, T = 25 C, P = 0.0 kbar, cell volume = 228.78 ang**3
      _database_code_amcsd 0003267

      CELL PARAMETERS:    6.1161   6.1161   6.1161   90.000   90.000   90.000
      SPACE GROUP: Fm3m      
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:    228.783
      Density (g/cm3):      2.024
      MAX. ABS. INTENSITY / VOLUME**2:      33.69674553    
      RIR:      5.421
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                29.20        100.00        3.0580    2   0   0         6
                41.77         62.84        2.1624    2   2   0        12
                51.78         19.17        1.7656    2   2   2         8
                60.56          7.91        1.5290    4   0   0         6
                68.62         19.67        1.3676    4   2   0        24
                76.27         13.42        1.2484    4   2   2        24
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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.