Alteration of interstellar organic materials in meteorites' parent bodies: A novel route for diamond formation

Hideyuki Nakano, Akira Kouchi, Masahiko Arakawa, Yuki Kimura, Chihiro Kaito, Hiroshi Ohno, Takeo Hondoh

Research output: Contribution to journalArticlepeer-review

14 Citations (Scopus)

Abstract

Based on experiments that model interstellar organic materials, we found that both C and N contents and IR spectra of insoluble organic materials in carbonaceous chondrites could be reproduced well by the aqueous alteration and the subsequent thermal metamorphism. The resulting sample shows strong evidence of diamond, which indicates that this process is an unexpected mechanism that might produce extensive amount of diamond in meteorites' parent bodies. Because this process requires neither high pressures nor energetic processes, the present results suggest an alternate origin of diamonds in meteorites.

Original languageEnglish
Pages (from-to)277-281
Number of pages5
JournalProceedings of the Japan Academy Series B: Physical and Biological Sciences
Volume78
Issue number9
DOIs
Publication statusPublished - 2002 Nov

Keywords

  • Aqueous alteration
  • Carbonaceous chondrite
  • Diamond
  • Interstellar organic materials
  • Meteorite
  • Thermal metamorphism

ASJC Scopus subject areas

  • Agricultural and Biological Sciences(all)
  • Physics and Astronomy(all)

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