Structural features of natural graphite

1986 
Graphite is the end member for a series of states of carbonaceous materials differing in structural ordering, which are determined by the distortion in the individual layers, and the regularity of orientation and positions. Consequently, the structural features of graphite and graphitized carbon have attracted much attention in research on the conversion of natural organic substances during coalification and metamorphism. The authors have combined X-ray and electron diffraction methods, in which the advantages of the one compensate for the weakness of the other, so one can evaluate the structural data correctly. They examined graphites from various deposits and rocks in the USSR, which enabled them both to evaluate the variations in polytype composition and to identify diffraction features expressing the specific differences of graphite polytypes from the polytypes of other substances. 26 references.
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