Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1038/s41467-020-14758-3 |
Iron whiskers on asteroid Itokawa indicate sulfide destruction by space weathering | |
Matsumoto, Toru1,2; Harries, Dennis2; Langenhorst, Falko2,3; Miyake, Akira4; Noguchi, Takaaki1 | |
2020-02-28 | |
发表期刊 | NATURE COMMUNICATIONS
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ISSN | 2041-1723 |
出版年 | 2020 |
卷号 | 11期号:1 |
文章类型 | Article |
语种 | 英语 |
国家 | Japan; Germany; USA |
英文摘要 | Extraterrestrial iron sulfide is a major mineral reservoir of the cosmochemically and astrobiologically important elements iron and sulfur. Sulfur depletion on asteroids is a long-standing, yet unresolved phenomenon that is of fundamental importance for asteroid evolution and sulfur delivery to the Earth. Understanding the chemistry of such environments requires insight into the behavior of iron sulfides exposed to space. Here we show that troilite (FeS) grains recovered from the regolith of asteroid 25143 Itokawa have lost sulfur during long-term space exposure. We report the wide-spread occurrence of metallic iron whiskers as a decomposition product formed through irradiation of the sulfide by energetic ions of the solar wind. Whisker growth by ion irradiation is a novel and unexpected aspect of space weathering. It implies that sulfur loss occurs rapidly and, furthermore, that ion irradiation plays an important role in the redistribution of sulfur between solids and gas of the interstellar medium. The authors here investigate troilite (FeS) grains recovered from the regolith of asteroid Itokawa. Finding wide-spread occurrence of metallic iron whiskers, the authors suggest them to be a decomposition product formed through irradiation of the sulfide by energetic ions of the solar wind. |
领域 | 地球科学 ; 气候变化 ; 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000518626300010 |
WOS关键词 | INCONGRUENT EVAPORATION ; ELEMENTAL COMPOSITION ; REGOLITH PARTICLES ; 433 EROS ; GROWTH ; DUST ; INTERSTELLAR ; SULFUR ; IRRADIATION ; MECHANISM |
WOS类目 | Multidisciplinary Sciences |
WOS研究方向 | Science & Technology - Other Topics |
URL | 查看原文 |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/249759 |
专题 | 资源环境科学 |
作者单位 | 1.Kyushu Univ, Fac Arts & Sci, Nisi Ku, 744 Motooka, Fukuoka 8190395, Japan; 2.Friedrich Schiller Univ Jena, Inst Geosci, Carl Zeiss Promenade 10, D-07745 Jena, Germany; 3.Univ Hawaii Manoa, Sch Ocean & Earth Sci & Technol, Hawaii Inst Geophys & Planetol, Honolulu, HI 96822 USA; 4.Kyoto Univ, Div Earth & Planetary Sci, Sakyo Ku, Kitashirakawaoiwake Cho, Kyoto 6068502, Japan |
推荐引用方式 GB/T 7714 | Matsumoto, Toru,Harries, Dennis,Langenhorst, Falko,et al. Iron whiskers on asteroid Itokawa indicate sulfide destruction by space weathering[J]. NATURE COMMUNICATIONS,2020,11(1). |
APA | Matsumoto, Toru,Harries, Dennis,Langenhorst, Falko,Miyake, Akira,&Noguchi, Takaaki.(2020).Iron whiskers on asteroid Itokawa indicate sulfide destruction by space weathering.NATURE COMMUNICATIONS,11(1). |
MLA | Matsumoto, Toru,et al."Iron whiskers on asteroid Itokawa indicate sulfide destruction by space weathering".NATURE COMMUNICATIONS 11.1(2020). |
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