(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: r56321, T = 450 C, P = 13.4 kbar, cell volume = 192.24 ang**3
      _database_code_amcsd 0003359

      CELL PARAMETERS:    5.7714   5.7714   5.7714   90.000   90.000   90.000
      SPACE GROUP: Fm3m      
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:    192.240
      Density (g/cm3):      2.130
      MAX. ABS. INTENSITY / VOLUME**2:      31.38222706    
      RIR:      4.797
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                26.75          4.32        3.3321    1   1   1         8
                30.99        100.00        2.8857    2   0   0         6
                44.40         61.47        2.0405    2   2   0        12
                52.59          1.08        1.7401    3   1   1        24
                55.13         18.48        1.6661    2   2   2         8
                64.59          7.56        1.4428    4   0   0         6
                73.36         18.73        1.2905    4   2   0        24
                81.75         12.87        1.1781    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.