Graphite
      Lipson H, Stokes A R
      Proceedings of the Royal Society of London A181 (1942) 101-105
      The structure of graphite
      Locality: Ceylon, Bavaria
      Note: phase: graphite 3R
      _database_code_amcsd 0015334

      CELL PARAMETERS:    3.6350   3.6350   3.6350   39.490   39.490   39.490
      SPACE GROUP: R-3m      
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:     17.485
      Density (g/cm3):      2.281
      MAX. ABS. INTENSITY / VOLUME**2:      16.75139658    
      RIR:      2.391
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                26.63        100.00        3.3470    1   1   1         2
                43.49         13.39        2.0808    1   0   0         6
                46.36          8.67        1.9585    1   1   0         6
                77.77          5.34        1.2280    0  -1   1         6
================================================================================
       XPOW Copyright 1993 Bob Downs, Ranjini Swaminathan and Kurt Bartelmehs
  For reference, see Downs et al. (1993) American Mineralogist 78, 1104-1107.