Origin of a metamorphosed lithic clast in CM chondrite Grove Mountains 021536
A metamorphosed lithic clast was discovered in the CM chondrite Grove Mountains 021536, which was collected in the Antarctica by the Chinese Antarctic Research Exploration team. The lithic clast is composed mainly of Fe-rich olivine (Fo62) with minor diopside (Fs_(9.7–11.1)Wo_(48.3–51.6)), plagiocla...
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ftcaltechauth:oai:authors.library.caltech.edu:18842 2023-05-15T13:49:58+02:00 Origin of a metamorphosed lithic clast in CM chondrite Grove Mountains 021536 Zhang, Aicheng Guan, Yunbin Hsu, Weibiao Liu, Yang Taylor, Lawrence A. 2010-02 application/pdf https://authors.library.caltech.edu/18842/ https://authors.library.caltech.edu/18842/1/Zhang2010p10435Meteorit_Planet_Sci.pdf https://resolver.caltech.edu/CaltechAUTHORS:20100629-090504506 en eng Meteoritical Society https://authors.library.caltech.edu/18842/1/Zhang2010p10435Meteorit_Planet_Sci.pdf Zhang, Aicheng and Guan, Yunbin and Hsu, Weibiao and Liu, Yang and Taylor, Lawrence A. (2010) Origin of a metamorphosed lithic clast in CM chondrite Grove Mountains 021536. Meteoritics and Planetary Science, 45 (2). pp. 238-245. ISSN 1086-9379. doi:10.1111/j.1945-5100.2010.01020.x. https://resolver.caltech.edu/CaltechAUTHORS:20100629-090504506 <https://resolver.caltech.edu/CaltechAUTHORS:20100629-090504506> other Article PeerReviewed 2010 ftcaltechauth https://doi.org/10.1111/j.1945-5100.2010.01020.x 2021-11-11T18:44:48Z A metamorphosed lithic clast was discovered in the CM chondrite Grove Mountains 021536, which was collected in the Antarctica by the Chinese Antarctic Research Exploration team. The lithic clast is composed mainly of Fe-rich olivine (Fo62) with minor diopside (Fs_(9.7–11.1)Wo_(48.3–51.6)), plagioclase (An_(43–46.5)), nepheline, merrillite, Al-rich chromite (21.8 wt% Al_2O_3; 4.43 wt% TiO_2), and pentlandite. Δ^(17)O values of olivine in the lithic clast vary from −3.9‰ to −0.8‰. Mineral compositions and oxygen isotopic compositions of olivine suggest that the lithic clast has an exotic source different from the CM chondrite parent body. The clast could be derived from strong thermal metamorphism of pre-existing chondrule that has experienced low-temperature anhydrous alteration. The lithic clast is similar in mineral assemblage and chemistry to a few clasts observed in oxidized CV3 chondrites (Mokoia and Yamato-86009) and might have been derived from the interior of the primitive CV asteroid. The apparent lack of hydration in the lithic clast indicates that the clast accreted into the CM chondrite after hydration of the CM components. Article in Journal/Newspaper Antarc* Antarctic Antarctica Caltech Authors (California Institute of Technology) Antarctic Grove Mountains ENVELOPE(75.000,75.000,-72.750,-72.750) Yamato ENVELOPE(35.583,35.583,-71.417,-71.417) Meteoritics & Planetary Science 45 2 238 245 |
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Caltech Authors (California Institute of Technology) |
op_collection_id |
ftcaltechauth |
language |
English |
description |
A metamorphosed lithic clast was discovered in the CM chondrite Grove Mountains 021536, which was collected in the Antarctica by the Chinese Antarctic Research Exploration team. The lithic clast is composed mainly of Fe-rich olivine (Fo62) with minor diopside (Fs_(9.7–11.1)Wo_(48.3–51.6)), plagioclase (An_(43–46.5)), nepheline, merrillite, Al-rich chromite (21.8 wt% Al_2O_3; 4.43 wt% TiO_2), and pentlandite. Δ^(17)O values of olivine in the lithic clast vary from −3.9‰ to −0.8‰. Mineral compositions and oxygen isotopic compositions of olivine suggest that the lithic clast has an exotic source different from the CM chondrite parent body. The clast could be derived from strong thermal metamorphism of pre-existing chondrule that has experienced low-temperature anhydrous alteration. The lithic clast is similar in mineral assemblage and chemistry to a few clasts observed in oxidized CV3 chondrites (Mokoia and Yamato-86009) and might have been derived from the interior of the primitive CV asteroid. The apparent lack of hydration in the lithic clast indicates that the clast accreted into the CM chondrite after hydration of the CM components. |
format |
Article in Journal/Newspaper |
author |
Zhang, Aicheng Guan, Yunbin Hsu, Weibiao Liu, Yang Taylor, Lawrence A. |
spellingShingle |
Zhang, Aicheng Guan, Yunbin Hsu, Weibiao Liu, Yang Taylor, Lawrence A. Origin of a metamorphosed lithic clast in CM chondrite Grove Mountains 021536 |
author_facet |
Zhang, Aicheng Guan, Yunbin Hsu, Weibiao Liu, Yang Taylor, Lawrence A. |
author_sort |
Zhang, Aicheng |
title |
Origin of a metamorphosed lithic clast in CM chondrite Grove Mountains 021536 |
title_short |
Origin of a metamorphosed lithic clast in CM chondrite Grove Mountains 021536 |
title_full |
Origin of a metamorphosed lithic clast in CM chondrite Grove Mountains 021536 |
title_fullStr |
Origin of a metamorphosed lithic clast in CM chondrite Grove Mountains 021536 |
title_full_unstemmed |
Origin of a metamorphosed lithic clast in CM chondrite Grove Mountains 021536 |
title_sort |
origin of a metamorphosed lithic clast in cm chondrite grove mountains 021536 |
publisher |
Meteoritical Society |
publishDate |
2010 |
url |
https://authors.library.caltech.edu/18842/ https://authors.library.caltech.edu/18842/1/Zhang2010p10435Meteorit_Planet_Sci.pdf https://resolver.caltech.edu/CaltechAUTHORS:20100629-090504506 |
long_lat |
ENVELOPE(75.000,75.000,-72.750,-72.750) ENVELOPE(35.583,35.583,-71.417,-71.417) |
geographic |
Antarctic Grove Mountains Yamato |
geographic_facet |
Antarctic Grove Mountains Yamato |
genre |
Antarc* Antarctic Antarctica |
genre_facet |
Antarc* Antarctic Antarctica |
op_relation |
https://authors.library.caltech.edu/18842/1/Zhang2010p10435Meteorit_Planet_Sci.pdf Zhang, Aicheng and Guan, Yunbin and Hsu, Weibiao and Liu, Yang and Taylor, Lawrence A. (2010) Origin of a metamorphosed lithic clast in CM chondrite Grove Mountains 021536. Meteoritics and Planetary Science, 45 (2). pp. 238-245. ISSN 1086-9379. doi:10.1111/j.1945-5100.2010.01020.x. https://resolver.caltech.edu/CaltechAUTHORS:20100629-090504506 <https://resolver.caltech.edu/CaltechAUTHORS:20100629-090504506> |
op_rights |
other |
op_doi |
https://doi.org/10.1111/j.1945-5100.2010.01020.x |
container_title |
Meteoritics & Planetary Science |
container_volume |
45 |
container_issue |
2 |
container_start_page |
238 |
op_container_end_page |
245 |
_version_ |
1766252671398838272 |