1992/07/10 by Peter R. Buseck, Semeon J. Tsipursky, Robert L. Hettich · 1 citation
Chemistry · Materials Science · #Fullerene Chemistry and Applications #Boron and Carbon Nanomaterials Research #Carbon Nanotubes in Composites
paper · doi:10.1126/science.257.5067.215
openalex publication_date 1992/07/10 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/23
By means of high-resoluton transmission electron microscopy, both C(60) and C(70) fullerenes have been found in a, carbon-rich Precambrian rock from Russia The fullerenes were confirmed by Fourier transform mass spectrometry with both laser desorption and thermal desorption/electron-capture methods to verify that the fullerenes were indeed present in the geological sample and were not generated by the laser ionization event. The mass spectra were measured under conditions sufficient to resolve the (13)C/(12)C isotopic ratios for C(60) and C(70) and indicate that these ratios correspond to the normal range of isotopic values.