{"title":"嫦娥五号月球钻取样品中铁的纳米级分布和价态","authors":"Qing Liang, Xiujuan Li*, Zhou Jiang, Long Chen, Hongtao Cao, Rui Zhang, Meng Zou*, Xinyang Li, Qiang Zhou, Zhenyu Hu* and Wei Zhang*, ","doi":"10.1021/acsanm.5c0159310.1021/acsanm.5c01593","DOIUrl":null,"url":null,"abstract":"<p >The Chang’e-5 (CE-5) mission retrieved the youngest known lunar mare basalts (∼1–2 Ga) from a previously unsampled region of the Moon, providing critical constraints on late-stage lunar volcanism. By integrating microscopy (scanning electron microscopy, transmission electron microscopy, and high-angle annular dark-field scanning transmission electron microscopy) and spectroscopy analysis (energy-dispersive X-ray spectroscopy and electron energy loss spectroscopy [EELS]), we revealed nanoscale Fe-rich and Fe-poor lamellae in the pyroxene minerals from CE-5 lunar soil samples. The alternating Fe-rich lamellae (30 ± 5 nm) and Fe-poor lamellae (50 ± 8 nm) exhibited an inverse Fe–Ca correlation, with EELS confirming Fe<sup>2+</sup>/Fe<sup>0</sup> dominance (<i>L</i><sub>3</sub>-edge at 707 eV) in the Fe-rich lamellae but Fe<sup>3+</sup> enrichment (707.5 eV) in the Fe-poor lamellae. These redox contrasts were interpreted as products of (1) magmatic differentiation under low-oxygen-fugacity (f-O<sub>2</sub>) conditions and (2) postcrystallization alteration from solar-wind proton reduction. These findings advance our understanding of lunar postmagmatic thermal processing and provide insights for the development of lunar resources.</p>","PeriodicalId":6,"journal":{"name":"ACS Applied Nano Materials","volume":"8 18","pages":"9565–9569 9565–9569"},"PeriodicalIF":5.5000,"publicationDate":"2025-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Mapping the Nanoscale Distribution and Valence of Fe in Pyroxene from a Chang’e-5 Drilled Lunar Sample\",\"authors\":\"Qing Liang, Xiujuan Li*, Zhou Jiang, Long Chen, Hongtao Cao, Rui Zhang, Meng Zou*, Xinyang Li, Qiang Zhou, Zhenyu Hu* and Wei Zhang*, \",\"doi\":\"10.1021/acsanm.5c0159310.1021/acsanm.5c01593\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p >The Chang’e-5 (CE-5) mission retrieved the youngest known lunar mare basalts (∼1–2 Ga) from a previously unsampled region of the Moon, providing critical constraints on late-stage lunar volcanism. By integrating microscopy (scanning electron microscopy, transmission electron microscopy, and high-angle annular dark-field scanning transmission electron microscopy) and spectroscopy analysis (energy-dispersive X-ray spectroscopy and electron energy loss spectroscopy [EELS]), we revealed nanoscale Fe-rich and Fe-poor lamellae in the pyroxene minerals from CE-5 lunar soil samples. The alternating Fe-rich lamellae (30 ± 5 nm) and Fe-poor lamellae (50 ± 8 nm) exhibited an inverse Fe–Ca correlation, with EELS confirming Fe<sup>2+</sup>/Fe<sup>0</sup> dominance (<i>L</i><sub>3</sub>-edge at 707 eV) in the Fe-rich lamellae but Fe<sup>3+</sup> enrichment (707.5 eV) in the Fe-poor lamellae. These redox contrasts were interpreted as products of (1) magmatic differentiation under low-oxygen-fugacity (f-O<sub>2</sub>) conditions and (2) postcrystallization alteration from solar-wind proton reduction. These findings advance our understanding of lunar postmagmatic thermal processing and provide insights for the development of lunar resources.</p>\",\"PeriodicalId\":6,\"journal\":{\"name\":\"ACS Applied Nano Materials\",\"volume\":\"8 18\",\"pages\":\"9565–9569 9565–9569\"},\"PeriodicalIF\":5.5000,\"publicationDate\":\"2025-04-30\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"ACS Applied Nano Materials\",\"FirstCategoryId\":\"88\",\"ListUrlMain\":\"https://pubs.acs.org/doi/10.1021/acsanm.5c01593\",\"RegionNum\":2,\"RegionCategory\":\"材料科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q2\",\"JCRName\":\"MATERIALS SCIENCE, MULTIDISCIPLINARY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"ACS Applied Nano Materials","FirstCategoryId":"88","ListUrlMain":"https://pubs.acs.org/doi/10.1021/acsanm.5c01593","RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"MATERIALS SCIENCE, MULTIDISCIPLINARY","Score":null,"Total":0}
Mapping the Nanoscale Distribution and Valence of Fe in Pyroxene from a Chang’e-5 Drilled Lunar Sample
The Chang’e-5 (CE-5) mission retrieved the youngest known lunar mare basalts (∼1–2 Ga) from a previously unsampled region of the Moon, providing critical constraints on late-stage lunar volcanism. By integrating microscopy (scanning electron microscopy, transmission electron microscopy, and high-angle annular dark-field scanning transmission electron microscopy) and spectroscopy analysis (energy-dispersive X-ray spectroscopy and electron energy loss spectroscopy [EELS]), we revealed nanoscale Fe-rich and Fe-poor lamellae in the pyroxene minerals from CE-5 lunar soil samples. The alternating Fe-rich lamellae (30 ± 5 nm) and Fe-poor lamellae (50 ± 8 nm) exhibited an inverse Fe–Ca correlation, with EELS confirming Fe2+/Fe0 dominance (L3-edge at 707 eV) in the Fe-rich lamellae but Fe3+ enrichment (707.5 eV) in the Fe-poor lamellae. These redox contrasts were interpreted as products of (1) magmatic differentiation under low-oxygen-fugacity (f-O2) conditions and (2) postcrystallization alteration from solar-wind proton reduction. These findings advance our understanding of lunar postmagmatic thermal processing and provide insights for the development of lunar resources.
期刊介绍：
ACS Applied Nano Materials is an interdisciplinary journal publishing original research covering all aspects of engineering, chemistry, physics and biology relevant to applications of nanomaterials. The journal is devoted to reports of new and original experimental and theoretical research of an applied nature that integrate knowledge in the areas of materials, engineering, physics, bioscience, and chemistry into important applications of nanomaterials.
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