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An examination of graphite has been carried out by convergent-beam electron diffraction for the purpose of examining the symmetry of the structure, and of measuring the structure factors for the 100 and the 110 reflexions. Symmetry changes within the sample were related to the fault structure, which was imaged in the defocused convergent beam. The value determined for V100 deviates by approximately 9% from the value determined using Dirac-Slater scattering curves for a spherical atom. A difference Fourier map calculated from the experimental values and computed spherical atom values shows the trigonal regions of bonding potential, but lacks resolution, indicating a need to refine other reflexions in the zone.

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