Comment on “Discovery of davemaoite, CaSiO3-perovskite, as a mineral from the lower mantle”

Michael J. Walter; Simon C. Kohn; D. Graham Pearson; Steven B. Shirey; Laura Speich; Thomas Stachel; Andrew R. Thomson; Jing Yang

doi:10.1126/science.abo0882

Comment on “Discovery of davemaoite, CaSiO₃-perovskite, as a mineral from the lower mantle”

Michael J. Walter^*
, Simon C. Kohn
, D. Graham Pearson
, Steven B. Shirey
, Laura Speich
, Thomas Stachel
, Andrew R. Thomson
, Jing Yang

^*Corresponding author for this work

Research output: Contribution to journal › Comment/debate (Academic Journal) › peer-review

7 Citations (Scopus)

Abstract

Tschauner et al. (Reports, 11 November 2021, p. 891) present evidence that diamond GRR-1507 formed in the lower mantle. Instead, the data support a much shallower origin in cold, subcratonic lithospheric mantle. X-ray diffraction data are well matched to phases common in microinclusion-bearing lithospheric diamonds. The calculated bulk inclusion composition is too imprecise to uniquely confirm CaSiO3 stoichiometry and is equally consistent with inclusions observed in other lithospheric diamonds.

Original language	English
Article number	eabo0882
Number of pages	4
Journal	Science
Volume	376
Issue number	6593
DOIs	https://doi.org/10.1126/science.abo0882
Publication status	Published - 6 May 2022

Bibliographical note

Publisher Copyright:
Copyright © 2022 The Authors, some rights reserved.

Research Groups and Themes

PetrologyGroup

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10.1126/science.abo0882

https://discovery.ucl.ac.uk/id/eprint/10148031/

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Cite this

@article{12639b99cdca4322a4ca752b8a234314,

title = "Comment on “Discovery of davemaoite, CaSiO3-perovskite, as a mineral from the lower mantle”",

abstract = "Tschauner et al. (Reports, 11 November 2021, p. 891) present evidence that diamond GRR-1507 formed in the lower mantle. Instead, the data support a much shallower origin in cold, subcratonic lithospheric mantle. X-ray diffraction data are well matched to phases common in microinclusion-bearing lithospheric diamonds. The calculated bulk inclusion composition is too imprecise to uniquely confirm CaSiO3 stoichiometry and is equally consistent with inclusions observed in other lithospheric diamonds.",

author = "Walter, \{Michael J.\} and Kohn, \{Simon C.\} and \{Graham Pearson\}, D. and Shirey, \{Steven B.\} and Laura Speich and Thomas Stachel and Thomson, \{Andrew R.\} and Jing Yang",

note = "Publisher Copyright: Copyright {\textcopyright} 2022 The Authors, some rights reserved.",

year = "2022",

month = may,

day = "6",

doi = "10.1126/science.abo0882",

language = "English",

volume = "376",

journal = "Science",

issn = "0036-8075",

publisher = "American Association for the Advancement of Science",

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T1 - Comment on “Discovery of davemaoite, CaSiO3-perovskite, as a mineral from the lower mantle”

AU - Walter, Michael J.

AU - Kohn, Simon C.

AU - Graham Pearson, D.

AU - Shirey, Steven B.

AU - Speich, Laura

AU - Stachel, Thomas

AU - Thomson, Andrew R.

AU - Yang, Jing

PY - 2022/5/6

Y1 - 2022/5/6

N2 - Tschauner et al. (Reports, 11 November 2021, p. 891) present evidence that diamond GRR-1507 formed in the lower mantle. Instead, the data support a much shallower origin in cold, subcratonic lithospheric mantle. X-ray diffraction data are well matched to phases common in microinclusion-bearing lithospheric diamonds. The calculated bulk inclusion composition is too imprecise to uniquely confirm CaSiO3 stoichiometry and is equally consistent with inclusions observed in other lithospheric diamonds.

AB - Tschauner et al. (Reports, 11 November 2021, p. 891) present evidence that diamond GRR-1507 formed in the lower mantle. Instead, the data support a much shallower origin in cold, subcratonic lithospheric mantle. X-ray diffraction data are well matched to phases common in microinclusion-bearing lithospheric diamonds. The calculated bulk inclusion composition is too imprecise to uniquely confirm CaSiO3 stoichiometry and is equally consistent with inclusions observed in other lithospheric diamonds.

UR - https://www.scopus.com/pages/publications/85129362615

U2 - 10.1126/science.abo0882

DO - 10.1126/science.abo0882

M3 - Comment/debate (Academic Journal)

C2 - 35536897

AN - SCOPUS:85129362615

SN - 0036-8075

VL - 376

JO - Science

JF - Science

IS - 6593

M1 - eabo0882

ER -