Graphite
      Trucano P, Chen R
      Nature 258 (1975) 136-137
      Structure of graphite by neutron diffraction
      Locality: undefined
      Note: natural crystals
      _database_code_amcsd 0014675

      CELL PARAMETERS:    2.4640   2.4640   6.7110   90.000   90.000  120.000
      SPACE GROUP: P6_3/mmc  
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:     35.286
      Density (g/cm3):      2.261
      MAX. ABS. INTENSITY / VOLUME**2:      16.41412368    
      RIR:      2.364
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                26.56        100.00        3.3555    0   0   2         2
                42.36          3.42        2.1339    1   0   0         6
                44.56         16.63        2.0336    1   0   1        12
                50.70          3.27        1.8006    1   0   2        12
                54.71          6.31        1.6777    0   0   4         2
                59.91          4.86        1.5441    1   0   3        12
                77.47          1.64        1.2320    1   1   0         6
                83.61          2.60        1.1565    1   1   2        12
                85.46          1.37        1.1361    1   0   5        12
                87.14          1.17        1.1185    0   0   6         2
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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.