3 hasil untuk "Torpy Aaron"

Development and application of soft X-ray spectroscopy and cathodoluminescence to minerals

MacRae Colin M.; Wilson Nicholas C.; Torpy Aaron dkk.

EPJ Web of Conferences, Vol. 349 · 2026 · Inggris · DOAJ

The addition of hyperspectral soft x-ray emission spectrometers (SXES) and cathodoluminescence (CL) spectrometry to electron microprobes gives access to spectroscopies that provide sample information not available from wavelength-dispersive (WDS) or energy-dispersive X-ray spectrometers (EDS). We…

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

Tomkins, Andrew G.; Wilson, Nicholas C.; MacRae, Colin dkk.

Proc Natl Acad Sci U S A · 2023 · Inggris · PubMed Central

Sequential Lonsdaleite to Diamond Formation in Ureilite Meteorites via In Situ Chemical Fluid/Vapor Deposition

Tomkins, Andrew G.; Wilson, Nicholas C.; MacRae, Colin dkk.

Proc Natl Acad Sci U S A · 2022 · Inggris · PubMed Central

Ureilite meteorites are arguably our only large suite of samples from the mantle of a dwarf planet and typically contain greater abundances of diamond than any known rock. Some also contain lonsdaleite, which may be harder than diamond. Here, we use electron microscopy to map the relative…