Abstract
The Tieschitz H3 chondrite contains 0.25% bulk carbon1 but concentrations of as much as 2–6% (ref. 2) occur in black, 10–20 µm-wide rims around chondrules that are thought to have accreted before the agglomeration of the stone2–5. These rims are extremely fine-grained and compact, the main constituent being an iron-rich olivine (Fa 60–65) as shown by a Debye–Sherrer X-ray diffractogram, in good agreement with the FeO/FeO + MgO matrix value2,6. To further our understanding of the rim composition and of the thermal history of the stone, we used the MOLE Raman laser microprobe7 to characterize the carbon constituent. We report here that it is a highly disordered graphite with a progressive ordering as shown by samples heated to temperatures between 300 and 600 °C. Tieschitz could not have been heated to more than 300–350 °C.
This is a preview of subscription content, access via your institution
Access options
Subscribe to this journal
Receive 51 print issues and online access
$199.00 per year
only $3.90 per issue
Buy this article
- Purchase on SpringerLink
- Instant access to full article PDF
Prices may be subject to local taxes which are calculated during checkout
Similar content being viewed by others
References
Otting, W. & Zahringer, J. Geochim. cosmochim. Acta 31, 1949–1960 (1967).
Kurat, G. Earth planet. Sci. Lett. 7, 317–324 (1970).
Christophe, M. Earth Planet Sci. Lett. 30, 143–150 (1976).
Hutchison, R., Bevan, A. W., Agrell, S. O. & Ashworth, J. R. Nature 280, 116–119, (1979).
Ashworth, J. R. Proc. R. Soc. A 374, 179–194. (1981).
Huss, G. R., Keil, K. & Taylor, G. J. Meteoritics 13, 495–497 (1978).
Dhamelincourt, P. thesis, Univ. Lille (1979).
Tuinst, F. & Koenig, J. L. J. chem. Phys. 53, 1126–1130 (1970).
Sato, Y., Kamo, M. & Setaha, N. Carbon 16, 279–280 (1978).
Vidano, R. & Fischbach, D. B. J. Am. ceram. Soc. 61, 13–17 (1978).
Hayatsu, R., Scott, R. G., Studier, H., Lewis, R. S. & Anders, E. Science 209, 1515–1517. (1980).
Whittaker, A. G., Watts, E. J., Lewis, R. S. & Anders, E. Science 209, 1512–1514 (1980).
Smith, P. P.K. & Buseck, P. R. 12th Lumar planet. Sci. Conf. 1017–1019 (1981).
Bevan, A. W. R. & Axon, H. J. Earth planet. Sci. Lett. 47, 353–60 (1980).
Clarke, R. S. Jr & Scott, E. R. D. Am. Miner. 65, 624–630 (1980).
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Michel-Levy, M., Lautie, A. Microanalysis by Raman spectroscopy of carbon in the Tieschitz chondrite. Nature 292, 321–322 (1981). https://doi.org/10.1038/292321a0
Received:
Accepted:
Issue date:
DOI: https://doi.org/10.1038/292321a0
