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Diamond formation from mantle carbonate fluids

Nature volume 400, pages 417–418 (1999)Cite this article

Abstract

Analysis of inclusions1 has shown that natural diamond forms at pressures of 5-6 GPa and temperatures in the range 900-1,400 °C. In non-metallic systems2,4, diamond has been synthesized only at pressures greater than 7 GPa and temperatures of more than 1,600 °C. We find that diamond can crystallize in alkaline carbonate-fluid melts at pressures and temperatures that correspond to those of natural diamond formation.

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Figure 1: Scanning electron micrographs of diamonds.

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Authors and Affiliations

  1. Institute of Mineralogy and Petrography, Siberian Branch of Russian Academy of Sciences, Novosibirsk, 630090, Russian Federation

    Yu. N. Pal'yanov, A. G. Sokol, Yu. M. Borzdov, A. F. Khokhryakov & N. V. Sobolev

Authors
  1. Yu. N. Pal'yanov
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  2. A. G. Sokol
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  3. Yu. M. Borzdov
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  4. A. F. Khokhryakov
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  5. N. V. Sobolev
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Pal'yanov, Y., Sokol, A., Borzdov, Y. et al. Diamond formation from mantle carbonate fluids. Nature 400, 417–418 (1999). https://doi.org/10.1038/22678

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