Sylvite
      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: r57749, T = 100 C, P = 8.6 kbar, cell volume = 239.91 ang**3
      _database_code_amcsd 0003206

      CELL PARAMETERS:    6.2137   6.2137   6.2137   90.000   90.000   90.000
      SPACE GROUP: Fm3m      
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:    239.911
      Density (g/cm3):      2.064
      MAX. ABS. INTENSITY / VOLUME**2:      36.69983919    
      RIR:      5.790
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                28.73        100.00        3.1068    2   0   0         6
                41.09         63.03        2.1969    2   2   0        12
                50.91         19.27        1.7937    2   2   2         8
                59.51          7.97        1.5534    4   0   0         6
                67.40         19.83        1.3894    4   2   0        24
                74.86         13.53        1.2684    4   2   2        24
                89.15          3.95        1.0984    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.