Microanalysis by Raman spectroscopy of carbon in the Tieschitz chondrite

Details Microanalysis by Raman spectroscopy of carbon in the Tieschitz chondrite Microanalysis by Raman spectroscopy of carbon in the Tieschitz chondrite

Jul 1981

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981natur.292..321m&link_type=abstract

Nature, vol. 292, July 23-29, 1981, p. 321, 322. Centre National de la Recherche Scientifique Contract No. ATP-3775.

Computer Science

16

Carbon, Chondrites, Meteoritic Microstructures, Microanalysis, Raman Spectroscopy, Graphite, Raman Spectra

Scientific paper

Polished sections were prepared from Tieschitz samples previously heated in a nitrogen flux to 300 and 350 C for two hours and 400 and 600 C for one hour. The four samples were then compared with an unheated section of Tieschitz. Areas of interest were precisely located under the microscope, and transferred to the MOLE Raman laser microprobe for characterization of their carbon constituent. It was found that this constituent is a highly disordered graphite with progressive ordering, as shown by samples heated to temperatures between 300 and 600 C. It is concluded that Tieschitz could not have been heated to more than 300-350 C.

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