Frequent impacts on the Moon have changed the physical and chemical properties of the lunar regolith, with new materials deposited from the impact-induced vapor phase. Here, we combined nanoscale chemical and structural analysis to identify the mineral digenite (4Cu2S center dot CuS) in Chang'e-5 lunar soil. This is the first report of digenite in a lunar sample. The surface-correlated digenite phase is undifferen-tiated in distribution and compositionally distinct from its hosts, suggesting that it originated from vapor-phase deposition. The presence of an Al-rich impact glass bead suggests that a thermal effect pro-vided by impact ejecta is the main heat source for the evaporation of Cu-S components from a cupriferous troilite precursor, and the digenite condensed from these Cu-S vapors. A large pure metallic iron (Fe0) particle and high Cu content within the studied Cu-Fe-S grain suggest that this grain was most likely derived from a highly differentiated and reduced melt.(c) 2023 Science China Press. Published by Elsevier B.V. and Science China Press. All rights reserved. | Publication name | SCIENCE BULLETIN, Volume 68, Issue 7, Page 723-729, DOI 10.1016/j.scib.2023.03.020, Published APR 15 2023, Early Access APR 2023 | | Author(s) | Guo, Zhuang; Li, Chen; Li, Yang; Wu, Yanxue; Zhu, Chenxi; Wen, Yuanyun; Fa, Wenzhe; Li, Xiongyao; Liu, Jianzhong; Ouyang, Ziyuan | | Corresponding author(s) | Li, Yang
liyang@mail.gyig.ac.cn
-Chinese Acad Sci, Inst Geochem, Ctr Lunar & Planetary Sci, Guiyang 550081, Peoples R China
-Chinese Acad Sci, Ctr Excellence Comparat Planetol, Hefei 230026, Peoples R China | | Author(s) from IGCAS | Li, Yang; Guo, Zhuang; Li, Chen; Wen, Yuanyun; Li, Xiongyao; Liu, Jianzhong; Ouyang, Ziyuan | View here for the details
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