Walter, Michael J;
Kohn, Simon C;
Pearson, D Graham;
Shirey, Steven B;
Speich, Laura;
Stachel, Thomas;
Thomson, Andrew R;
(2022)
Comment on “Discovery of davemaoite, CaSiO₃-perovskite, as a mineral from the lower mantle”.
Science
, 376
(6593)
pp. 1-4.
10.1126/science.abo0882.
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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.
| Type: | Article |
|---|---|
| Title: | Comment on “Discovery of davemaoite, CaSiO₃-perovskite, as a mineral from the lower mantle” |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1126/science.abo0882 |
| Publisher version: | https://www.science.org/toc/science/0/0 |
| Language: | English |
| Additional information: | This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions. |
| UCL classification: | UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Earth Sciences UCL > Provost and Vice Provost Offices > UCL BEAMS UCL |
| URI: | https://discovery-pp.ucl.ac.uk/id/eprint/10148031 |
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