Origin of a metamorphosed lithic clast in CM chondrite Grove Mountains 021536
Abstract– 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 (Fo 62 ) with minor diopside (Fs 9.7–11.1 Wo 48.3–51.6 ),...
Published in: | Meteoritics & Planetary Science |
---|---|
Main Authors: | , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Wiley
2010
|
Subjects: | |
Online Access: | http://dx.doi.org/10.1111/j.1945-5100.2010.01020.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1945-5100.2010.01020.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1945-5100.2010.01020.x |
id |
crwiley:10.1111/j.1945-5100.2010.01020.x |
---|---|
record_format |
openpolar |
spelling |
crwiley:10.1111/j.1945-5100.2010.01020.x 2024-06-23T07:47:42+00:00 Origin of a metamorphosed lithic clast in CM chondrite Grove Mountains 021536 ZHANG, Aicheng GUAN, Yunbin HSU, Weibiao LIU, Yang TAYLOR, Lawrence A. 2010 http://dx.doi.org/10.1111/j.1945-5100.2010.01020.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1945-5100.2010.01020.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1945-5100.2010.01020.x en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Meteoritics & Planetary Science volume 45, issue 2, page 238-245 ISSN 1086-9379 1945-5100 journal-article 2010 crwiley https://doi.org/10.1111/j.1945-5100.2010.01020.x 2024-06-04T06:48:19Z Abstract– 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 (Fo 62 ) 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 2 O 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 Wiley Online Library 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 |
institution |
Open Polar |
collection |
Wiley Online Library |
op_collection_id |
crwiley |
language |
English |
description |
Abstract– 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 (Fo 62 ) 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 2 O 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 |
Wiley |
publishDate |
2010 |
url |
http://dx.doi.org/10.1111/j.1945-5100.2010.01020.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1945-5100.2010.01020.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1945-5100.2010.01020.x |
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_source |
Meteoritics & Planetary Science volume 45, issue 2, page 238-245 ISSN 1086-9379 1945-5100 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
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_ |
1802651851393335296 |