Comment on “Discovery of davemaoite, CaSiO <sub>3</sub> -perovskite, as a mineral from the lower mantle”-Reference-Cited by-同舟云学术

Comment on “Discovery of davemaoite, CaSiO ₃ -perovskite, as a mineral from the lower mantle”

Published:2022-05-06 Issue:6593 Volume:376 Page:
ISSN:0036-8075
Container-title:Science
language:en
Short-container-title:Science

Author:

Walter Michael J.¹^ORCID,Kohn Simon C.²^ORCID,Pearson D. Graham³^ORCID,Shirey Steven B.¹^ORCID,Speich Laura⁴^ORCID,Stachel Thomas³^ORCID,Thomson Andrew R.⁵^ORCID,Yang Jing¹^ORCID

Affiliation:

1. Earth and Planets Laboratory, Carnegie Institution for Science, Washington, DC 20015, USA.

2. School of Earth Sciences, University of Bristol, Bristol BS8 1TL, UK.

3. Department of Earth and Atmospheric Sciences, University of Alberta, Edmonton, Alberta T6G 2E3, Canada.

4. Swiss Gemmological Institute SSEF, CH-4051 Basel, Switzerland.

5. Department of Earth Sciences, University College London, London WC1E 6BT, UK.

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 CaSiO 3 stoichiometry and is equally consistent with inclusions observed in other lithospheric diamonds.

Publisher

American Association for the Advancement of Science (AAAS)

Subject

Multidisciplinary

Reference14 articles.

1. Discovery of davemaoite, CaSiO 3 -perovskite, as a mineral from the lower mantle

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