Kereszturi, Ákos and Gyollai, Ildikó and Biri, Sándor and Juhász, Zoltán and Pál, Bernadett and Rácz, Richárd and Rezes, Dániel and Sulik, Béla and Szalai, Zoltán and Szabó, Máté and Szávai, Péter (2025) Spectral changes of the NWA 10580 meteorite under simulated space weathering: Insights from VIS-NIR and microXRD analyses. ADVANCES IN SPACE RESEARCH. ISSN 0273-1177 (In Press)
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Spectral changes of the NWA 10580 meteorite under simulated.pdf - Accepted Version Download (1MB) | Preview |
Abstract
We investigate the effects of space weathering on asteroid surfaces by exposing the NWA 10580 meteorite to 1 keV solar wind proton irradiation, with a total fluence of up to 1017 ions/cm2 , equivalent to 10 Myr of exposure in space. We collect pre-and post-irradiation spectra using near-infrared spectroscopy and micro-X-ray diffraction. We observed irradiation-induced amorphization, reflected in sys-tematic shifts in d-spacing and peak broadening of crystalline phases. Orthopyroxene and carbonates showed an increasing d-spacing consistent with previous studies, while olivine exhibited changes associated with magnesium loss. Pyroxene spectra revealed the disap-pearance of minor absorption bands. In some cases, irregular d-spacing variations suggest metastable effects linked to pre-existing defects.
| Item Type: | Article |
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| Uncontrolled Keywords: | Meteorite; Spectroscopy; Near-infrared; Space weathering; NWA10580; Irradiation |
| Subjects: | Q Science / természettudomány > QB Astronomy, Astrophysics / csillagászat, asztrofizika Q Science / természettudomány > QE Geology / földtudományok > QE02 Geochemistry / geokémia Q Science / természettudomány > QE Geology / földtudományok > QE06 Petrology. Petrography / kőzettan, petrográfia |
| Depositing User: | dr. Ákos Kereszturi |
| Date Deposited: | 28 Jan 2026 12:14 |
| Last Modified: | 28 Jan 2026 15:14 |
| URI: | https://real.mtak.hu/id/eprint/232789 |
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