Origin of diamonds in old enriched mantle

S. H. Richardson; J. J. Gurney; A. J. Erlank; J. W. Harris

doi:10.1038/310198a0

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 journal › Article › peer-review

564 Citations (Scopus)

Abstract

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 language	English
Pages (from-to)	198-202
Number of pages	5
Journal	Nature
Volume	310
Issue number	5974
DOIs	https://doi.org/10.1038/310198a0
Publication status	Published - 1984
Externally published	Yes

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10.1038/310198a0

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title = "Origin of diamonds in old enriched mantle",

abstract = "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.",

author = "Richardson, {S. H.} and Gurney, {J. J.} and Erlank, {A. J.} and Harris, {J. W.}",

year = "1984",

doi = "10.1038/310198a0",

language = "English",

volume = "310",

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journal = "Nature",

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T1 - Origin of diamonds in old enriched mantle

AU - Richardson, S. H.

AU - Gurney, J. J.

AU - Erlank, A. J.

AU - Harris, J. W.

PY - 1984

Y1 - 1984

N2 - 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.

AB - 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.

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U2 - 10.1038/310198a0

DO - 10.1038/310198a0

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AN - SCOPUS:0021569822

SN - 0028-0836

VL - 310

SP - 198

EP - 202

JO - Nature

JF - Nature

IS - 5974

ER -

Origin of diamonds in old enriched mantle

Abstract

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