Cargando…
Space weathering signatures in sulfide and silicate minerals from asteroid Itokawa
Transmission electron microscopy analyses of the polymineralic regolith particle RC-MD01-0025 show microstructural and microchemical characteristics indicative of space weathering on the surface of asteroid Itokawa. The depletion of sulfur and nickel was identified in space weathered rims on troilit...
Autores principales: | , |
---|---|
Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Springer Berlin Heidelberg
2022
|
Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9363296/ https://www.ncbi.nlm.nih.gov/pubmed/35966971 http://dx.doi.org/10.1186/s40623-022-01683-6 |
_version_ | 1784764899210035200 |
---|---|
author | Chaves, Laura C. Thompson, Michelle S. |
author_facet | Chaves, Laura C. Thompson, Michelle S. |
author_sort | Chaves, Laura C. |
collection | PubMed |
description | Transmission electron microscopy analyses of the polymineralic regolith particle RC-MD01-0025 show microstructural and microchemical characteristics indicative of space weathering on the surface of asteroid Itokawa. The depletion of sulfur and nickel was identified in space weathered rims on troilite and pentlandite minerals. This corresponds to the first report of nickel depletion in samples returned from asteroid Itokawa by the Hayabusa mission. Microstructurally, the sulfide minerals present crystalline rims and the olivine presents both crystalline and amorphous zones in the rim. These results suggest that sulfides might be more resistant to amorphization caused by solar wind irradiation. The space weathering features identified in the regolith particle analyzed here are likely formed via solar wind irradiation. Additionally, the differences in the space weathering features in olivine, pentlandite, and troilite suggest that silicates and sulfides respond differently to the same space weathering conditions in interplanetary space. GRAPHICAL ABSTRACT: [Image: see text] |
format | Online Article Text |
id | pubmed-9363296 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2022 |
publisher | Springer Berlin Heidelberg |
record_format | MEDLINE/PubMed |
spelling | pubmed-93632962022-08-11 Space weathering signatures in sulfide and silicate minerals from asteroid Itokawa Chaves, Laura C. Thompson, Michelle S. Earth Planets Space Full Paper Transmission electron microscopy analyses of the polymineralic regolith particle RC-MD01-0025 show microstructural and microchemical characteristics indicative of space weathering on the surface of asteroid Itokawa. The depletion of sulfur and nickel was identified in space weathered rims on troilite and pentlandite minerals. This corresponds to the first report of nickel depletion in samples returned from asteroid Itokawa by the Hayabusa mission. Microstructurally, the sulfide minerals present crystalline rims and the olivine presents both crystalline and amorphous zones in the rim. These results suggest that sulfides might be more resistant to amorphization caused by solar wind irradiation. The space weathering features identified in the regolith particle analyzed here are likely formed via solar wind irradiation. Additionally, the differences in the space weathering features in olivine, pentlandite, and troilite suggest that silicates and sulfides respond differently to the same space weathering conditions in interplanetary space. GRAPHICAL ABSTRACT: [Image: see text] Springer Berlin Heidelberg 2022-08-09 2022 /pmc/articles/PMC9363296/ /pubmed/35966971 http://dx.doi.org/10.1186/s40623-022-01683-6 Text en © The Author(s) 2022 https://creativecommons.org/licenses/by/4.0/Open AccessThis article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) . |
spellingShingle | Full Paper Chaves, Laura C. Thompson, Michelle S. Space weathering signatures in sulfide and silicate minerals from asteroid Itokawa |
title | Space weathering signatures in sulfide and silicate minerals from asteroid Itokawa |
title_full | Space weathering signatures in sulfide and silicate minerals from asteroid Itokawa |
title_fullStr | Space weathering signatures in sulfide and silicate minerals from asteroid Itokawa |
title_full_unstemmed | Space weathering signatures in sulfide and silicate minerals from asteroid Itokawa |
title_short | Space weathering signatures in sulfide and silicate minerals from asteroid Itokawa |
title_sort | space weathering signatures in sulfide and silicate minerals from asteroid itokawa |
topic | Full Paper |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9363296/ https://www.ncbi.nlm.nih.gov/pubmed/35966971 http://dx.doi.org/10.1186/s40623-022-01683-6 |
work_keys_str_mv | AT chaveslaurac spaceweatheringsignaturesinsulfideandsilicatemineralsfromasteroiditokawa AT thompsonmichelles spaceweatheringsignaturesinsulfideandsilicatemineralsfromasteroiditokawa |