Hyperspectral cathodoluminescence and quantitative EPMA mapping of angrite northwest Africa 15507
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Abstract
Angrite meteorites represent alkali depleted planetary crust of basaltic composition, and have both plutonic and volcanic lithologies. NWA 15507 is a microgabbroic specimen (mean grainsize ~1.4 mm) composed predominantly of zoned Al-Ti-augite, Ca-bearing olivine and anorthite together with accessory kirschsteinite, rhönite, hercynite, low-Ni kamacite, merrillite, magnetite and troilite. Upon initial investigation, the anorthite was found to exhibit a cathodoluminescence (CL) response which revealed a complex history of crystallization. Hyperspectral cathodoluminescence, quantitative electron probe microanalysis mapping, laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS), and electron back scattered diffraction (EBSD) were used to determine the CL emitter to better unravel the crystallization history of NWA 15507.
| Publication type | Conference Paper |
|---|---|
| Publication Subtype | Conference Paper |
| Title | Hyperspectral cathodoluminescence and quantitative EPMA mapping of angrite northwest Africa 15507 |
| DOI | 10.1093/micmic/ozad067.415 |
| Volume | 29 |
| Issue | Supplement 1 |
| Year Published | 2023 |
| Language | English |
| Publisher | Oxford Academic |
| Contributing office(s) | Geology, Geophysics, and Geochemistry Science Center |
| Description | 2 p. |
| Larger Work Type | Book |
| Larger Work Subtype | Conference publication |
| Larger Work Title | 2023 Proceedings microscopy and microanalysis |
| First page | 836 |
| Last page | 837 |
| Conference Title | Microscopy and Microanalysis |
| Conference Location | Minneapolis, MN |
| Conference Date | July 23-27, 2023 |
| Google Analytic Metrics | Metrics page |