Sample processing and initial analysis techniques for Antarctic micrometeorites
Based on our initial visual selection (IVS) criteria and low vacuum (LV)-SEM/EDS data, we successfully selected candidates of unmelted chondritic Antarctic micrometeorites (AMMs) from the unsorted sample set collected by Maurette's group in 1991. AEM data of some of the selected microparticles...
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Planetary Science Division, Institute of Space and Astronautical Science/Department of Materials and Biological Sciences, Ibaraki University
1998
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ftnipr:oai:nipr.repo.nii.ac.jp:00005929 2023-05-15T13:46:39+02:00 Sample processing and initial analysis techniques for Antarctic micrometeorites Yano,Hajime Noguchi,Takaaki 1998-03 https://nipr.repo.nii.ac.jp/?action=repository_uri&item_id=5929 http://id.nii.ac.jp/1291/00005929/ https://nipr.repo.nii.ac.jp/?action=repository_action_common_download&item_id=5929&item_no=1&attribute_id=18&file_no=1 en eng Planetary Science Division, Institute of Space and Astronautical Science/Department of Materials and Biological Sciences, Ibaraki University National Institute of Polar Research https://nipr.repo.nii.ac.jp/?action=repository_uri&item_id=5929 http://id.nii.ac.jp/1291/00005929/ AA11182426 Antarctic meteorite research, 11, 136-154(1998-03) https://nipr.repo.nii.ac.jp/?action=repository_action_common_download&item_id=5929&item_no=1&attribute_id=18&file_no=1 Departmental Bulletin Paper P(論文) 1998 ftnipr 2023-02-25T20:13:36Z Based on our initial visual selection (IVS) criteria and low vacuum (LV)-SEM/EDS data, we successfully selected candidates of unmelted chondritic Antarctic micrometeorites (AMMs) from the unsorted sample set collected by Maurette's group in 1991. AEM data of some of the selected microparticles show that they are unmelted but probably dehydrated AMMs. An AMM candidate, 91-1-C4,contains ferroan (around Fo30) olivine grains which have planar channels parallel to (001). Their textures quite resemble those shown in the initial stage of iddingsite formation of olivine phenocrysts in terrestrial basalts. These findings indicate that some olivine crystals in AMMs can be altered even in the Antarctic environment. Report Antarc* Antarctic National Institute of Polar Research Repository, Japan Antarctic The Antarctic |
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Open Polar |
collection |
National Institute of Polar Research Repository, Japan |
op_collection_id |
ftnipr |
language |
English |
description |
Based on our initial visual selection (IVS) criteria and low vacuum (LV)-SEM/EDS data, we successfully selected candidates of unmelted chondritic Antarctic micrometeorites (AMMs) from the unsorted sample set collected by Maurette's group in 1991. AEM data of some of the selected microparticles show that they are unmelted but probably dehydrated AMMs. An AMM candidate, 91-1-C4,contains ferroan (around Fo30) olivine grains which have planar channels parallel to (001). Their textures quite resemble those shown in the initial stage of iddingsite formation of olivine phenocrysts in terrestrial basalts. These findings indicate that some olivine crystals in AMMs can be altered even in the Antarctic environment. |
format |
Report |
author |
Yano,Hajime Noguchi,Takaaki |
spellingShingle |
Yano,Hajime Noguchi,Takaaki Sample processing and initial analysis techniques for Antarctic micrometeorites |
author_facet |
Yano,Hajime Noguchi,Takaaki |
author_sort |
Yano,Hajime |
title |
Sample processing and initial analysis techniques for Antarctic micrometeorites |
title_short |
Sample processing and initial analysis techniques for Antarctic micrometeorites |
title_full |
Sample processing and initial analysis techniques for Antarctic micrometeorites |
title_fullStr |
Sample processing and initial analysis techniques for Antarctic micrometeorites |
title_full_unstemmed |
Sample processing and initial analysis techniques for Antarctic micrometeorites |
title_sort |
sample processing and initial analysis techniques for antarctic micrometeorites |
publisher |
Planetary Science Division, Institute of Space and Astronautical Science/Department of Materials and Biological Sciences, Ibaraki University |
publishDate |
1998 |
url |
https://nipr.repo.nii.ac.jp/?action=repository_uri&item_id=5929 http://id.nii.ac.jp/1291/00005929/ https://nipr.repo.nii.ac.jp/?action=repository_action_common_download&item_id=5929&item_no=1&attribute_id=18&file_no=1 |
geographic |
Antarctic The Antarctic |
geographic_facet |
Antarctic The Antarctic |
genre |
Antarc* Antarctic |
genre_facet |
Antarc* Antarctic |
op_relation |
https://nipr.repo.nii.ac.jp/?action=repository_uri&item_id=5929 http://id.nii.ac.jp/1291/00005929/ AA11182426 Antarctic meteorite research, 11, 136-154(1998-03) https://nipr.repo.nii.ac.jp/?action=repository_action_common_download&item_id=5929&item_no=1&attribute_id=18&file_no=1 |
_version_ |
1766244987787280384 |