(K.2Na.8)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: r56329, T = 350 C, P = 11.8 kbar, cell volume = 191.40 ang**3
      _database_code_amcsd 0003354

      CELL PARAMETERS:    5.7630   5.7630   5.7630   90.000   90.000   90.000
      SPACE GROUP: Fm3m      
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:    191.402
      Density (g/cm3):      2.140
      MAX. ABS. INTENSITY / VOLUME**2:      31.51479361    
      RIR:      4.796
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                26.79          4.32        3.3273    1   1   1         8
                31.04        100.00        2.8815    2   0   0         6
                44.46         61.42        2.0375    2   2   0        12
                52.68          1.08        1.7376    3   1   1        24
                55.21         18.45        1.6636    2   2   2         8
                64.70          7.54        1.4408    4   0   0         6
                73.49         18.70        1.2886    4   2   0        24
                81.89         12.86        1.1764    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.