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Carbon isotopic variation in spectral type II diamonds

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Abstract

The carbon isotope composition of most diamonds measured so far1 falls within a fairly restricted range from −5 to −9‰. On the other hand, the type II diamonds studied here show δ13C values (−0.5 to −31.9‰) extending over almost the entire range of carbon isotope values previously quoted for diamonds. We suggest here that these data are related to variations in the nature of the carbon reservoir source and associated inclusion suites.

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Author notes

  1. P. K. Swart

    Present address: Laboratory for Comparative Sedimentology, University of Miami, Fisher Island Station, Miami Beach, Florida, 33139, USA

Authors and Affiliations

  1. Crystallography Unit, Department of Geology, University College London, London, WC1E 6BT, UK

    H. J. Milledge & M. J. Mendelssohn

  2. D. Drukker & Zn, N.V., 1017, WV Amsterdam, The Netherlands

    M. Seal

  3. Institute of Geological Sciences, Gray's Inn Road, London, WC1X 8NG, UK

    J. E. Rouse

  4. Planetary Sciences Unit, Department of Earth Sciences, University of Cambridge, Cambridge, CB2 3EQ, UK

    P. K. Swart & C. T. Pillinger

Authors
  1. H. J. Milledge
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  2. M. J. Mendelssohn
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  3. M. Seal
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  4. J. E. Rouse
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  5. P. K. Swart
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  6. C. T. Pillinger
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Milledge, H., Mendelssohn, M., Seal, M. et al. Carbon isotopic variation in spectral type II diamonds. Nature 303, 791–792 (1983). https://doi.org/10.1038/303791a0

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  • DOI: https://doi.org/10.1038/303791a0

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