PMO OpenIR  > 天体化学和行星科学实验室
Record of S-rich vapors on asteroid 4 Vesta: Sulfurization in the Northwest Africa 2339 eucrite
Bartoschewitz.Rainer, Hsu.Wei-Biao, Wang.Ru-Cheng, Zhang.Ai-Cheng
2013
Source PublicationGeochimica et Cosmochimica Acta
ISSN0016-7037
Volume109Pages:1-13
Corresponding AuthorZhang, AC (reprint author), Nanjing Univ, Sch Earth Sci & Engn, State Key Lab Mineral Deposits Res, Nanjing 210093, Jiangsu, Peoples R China. Email: aczhang@nju.edu.cn
AbstractIn the Northwest Africa (NWA) 2339 eucrite, a few high-Fe pigeonite fragments were partially replaced by fine-grained troilite, Mg-rich augite, silica, with minor ilmenite and Mg-rich ferrosilite. The relict pigeonite has distinctly lower Fe/Mn values (17-18) than those (30) of augite and Mg-rich ferrosilite in the fine-grained replacement textures and other eucritic pyroxenes in NWA 2339. The few plagioclase grains associated with these Fe-rich pigeonite fragments contain high albite components (Ab17-31). Similar replacement textures are also present in a lithic clast consisting of pyroxene and Na-rich plagioclase (Ab20-25). In this lithic clast, high-Fe subcalcic augite was replaced by troilite, Mg-rich hedenbergite, silica, and minor ilmenite whereas Mg-rich pigeonite remains intact. Troilite also occurs as tiny inclusions in porous regions of plagioclase. Moreover, the porous regions of plagioclase are enriched in Si and depleted in Al, Ca, and Na, compared to relict plagioclase. These textures indicate that the formation of troilite-rich mineral assemblages is related to the reaction between FeSiO3 component in pyroxene and S-rich vapors; whereas, the formation of tiny troilite in porous regions of plagioclase is related to the reaction between Fe2+ in plagioclase and S-rich vapors. X-ray mapping results reveal that during sulfurization of pyroxene and plagioclase, lithophile elements Mn, Al, Ca, Na, and Mg were removed to various extents, very likely by the S-rich vapors. Based on our observations, the S-rich vapors could be dry S-O-P vapors, which most likely have been formed by volatilization of pre-existing S,P-bearing materials due to impact heating on the surface of asteroid 4 Vesta. 2013 Elsevier Ltd.
Subject AreaGeochemistry & Geophysics
Document Type期刊论文
Identifierhttp://libir.pmo.ac.cn/handle/332002/9895
Collection天体化学和行星科学实验室
Recommended Citation
GB/T 7714
Bartoschewitz.Rainer, Hsu.Wei-Biao, Wang.Ru-Cheng, Zhang.Ai-Cheng. Record of S-rich vapors on asteroid 4 Vesta: Sulfurization in the Northwest Africa 2339 eucrite[J]. Geochimica et Cosmochimica Acta,2013,109:1-13.
APA Bartoschewitz.Rainer, Hsu.Wei-Biao, Wang.Ru-Cheng, Zhang.Ai-Cheng.(2013).Record of S-rich vapors on asteroid 4 Vesta: Sulfurization in the Northwest Africa 2339 eucrite.Geochimica et Cosmochimica Acta,109,1-13.
MLA Bartoschewitz.Rainer, Hsu.Wei-Biao, Wang.Ru-Cheng, Zhang.Ai-Cheng."Record of S-rich vapors on asteroid 4 Vesta: Sulfurization in the Northwest Africa 2339 eucrite".Geochimica et Cosmochimica Acta 109(2013):1-13.
Files in This Item:
File Name/Size DocType Version Access License
2013079Record of S-r(2668KB) 开放获取CC BY-NC-SAView Application Full Text
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Bartoschewitz.Rainer, Hsu.Wei-Biao, Wang.Ru-Cheng, Zhang.Ai-Cheng]'s Articles
Baidu academic
Similar articles in Baidu academic
[Bartoschewitz.Rainer, Hsu.Wei-Biao, Wang.Ru-Cheng, Zhang.Ai-Cheng]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Bartoschewitz.Rainer, Hsu.Wei-Biao, Wang.Ru-Cheng, Zhang.Ai-Cheng]'s Articles
Terms of Use
No data!
Social Bookmark/Share
File name: 2013079Record of S-rich vapors on asteroid 4 Vesta_ Sulfurization in the Northwest Africa 2339 eucrite.pdf
Format: Adobe PDF
This file does not support browsing at this time
All comments (0)
No comment.
 

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.