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: r57737, T = 400 C, P = 13.4 kbar, cell volume = 241.01 ang**3
      _database_code_amcsd 0003220

      CELL PARAMETERS:    6.2232   6.2232   6.2232   90.000   90.000   90.000
      SPACE GROUP: Fm3m      
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:    241.013
      Density (g/cm3):      2.054
      MAX. ABS. INTENSITY / VOLUME**2:      36.53393216    
      RIR:      5.791
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                28.69        100.00        3.1116    2   0   0         6
                41.02         63.09        2.2002    2   2   0        12
                50.82         19.30        1.7965    2   2   2         8
                59.41          7.98        1.5558    4   0   0         6
                67.28         19.87        1.3915    4   2   0        24
                74.73         13.56        1.2703    4   2   2        24
                88.98          3.95        1.1001    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.