Origin of diamonds in old enriched mantle

S. H. Richardson*, J. J. Gurney, A. J. Erlank, J. W. Harris

*Corresponding author for this work

Research output: Contribution to journalArticle

516 Citations (Scopus)


Sub-calcic garnets encapsulated by diamonds from relatively young (90 Myr) kimberlites in southern Africa, yield ancient Sm-Nd and Rb-Sr model ages (3,200-3,300 Myr). The chemistry and distribution of these and associated sub-calcic garnets from kimberlite concentrate, indicate diamonds formed following enrichment of residual sub-cratonic mantle such as that remaining after widespread extraction of 3,500-Myr komatiitic lavas.

Original languageEnglish
Pages (from-to)198-202
Number of pages5
Issue number5974
Publication statusPublished - 1984
Externally publishedYes

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    Richardson, S. H., Gurney, J. J., Erlank, A. J., & Harris, J. W. (1984). Origin of diamonds in old enriched mantle. Nature, 310(5974), 198-202. https://doi.org/10.1038/310198a0