Reply to Németh and Garvie: Evidence for lonsdaleite in ureilite meteorites

Andrew G. Tomkins, Nicholas C. Wilson, Colin MacRae, Alan Salek, Matthew Field, Helen E.A. Brand, Andrew D. Langendam, Natasha R. Stephen, Aaron Torpy, Zsanett Pintér, Lauren A. Jennings, Dougal McCulloch

Research output: Contribution to journalArticleOtherpeer-review


In a recent letter to the editor, Nemeth and Garvie (1) questioned our experimental evidence for lonsdaleite in ureilite meteorites, which we suggested formed via in situ chemical fluid/vapor deposition (2). The hexagonal form of diamond, known as lonsdaleite, was first reported in the Canyon Diablo meteorite where it likely formed from graphite via high shock pressures (3). Nemeth and Garvie previously argued that the lonsdaleite in Canyon Diablo is instead a defective diamond (4) or combined graphite/diamond complexes coined, “diaphites” (5).
Original languageEnglish
Article numbere2305559120
Number of pages1
JournalProceedings of the National Academy of Sciences of the United States of America
Issue number20
Publication statusPublished - 16 May 2023

Cite this