Occurrence of natural fullerenes in low grade metamorphosed Proterozoic shungite from Karelia, Russia

Details Occurrence of natural fullerenes in low grade metamorphosed Proterozoic shungite from Karelia, Russia Occurrence of natural fullerenes in low grade metamorphosed Proterozoic shungite from Karelia, Russia

Nov 1998

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998gecoa..62.3541p&link_type=abstract

Geochimica et Cosmochimica Acta, vol. 62, Issue 21-22, pp.3541-3544

Physics

2

Scientific paper

We report on the occurrence of fullerenes in Proterozoic shungite (~2 Ga) from the shungite mine, Kondopoga, Karelia, Russia (62.12°N 34.17°E). The presence of fullerenes has been confirmed by mass spectrometry, with peaks at 360 and 720 amu (atomic mass unit), powder X-ray diffraction showing ten diffraction peaks corresponding to the fullerite structure with a = 1.4201(5) nm, and 13 C nuclear magnetic resonance (NMR) spectroscopic studies, showing a peak at 143.2 ppm. In the Kondopoga shungite mine, fullerenes occur in silty shales that have experienced greenshist facies metamorphism.

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