Amorphous graphite from the famous mines of Eastern Siberia has been studied by Raman spectroscopy. We show that amorphous graphite has a low degree of crystallinity. Besides, turbostratic nanocarbon has been discovered in all the studied samples except selected directly from contact with the intrusion. The nanocarbon areas are cryptograin and contain some relics of the differently preserved coal macerals. Accordingly, significant variations occur in the structure of the carbonaceous material with a two-dimensional order.
Raman spectroscopy, amorphous graphite, contact metamorphism, Eastern Siberia