2023
DOI: 10.1038/s41550-022-01855-0
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Ubiquitous and progressively increasing ferric iron content on the lunar surfaces revealed by the Chang’e-5 sample

Abstract: Though ferric iron indisputably exists on the highly reduced Moon, its formation mechanism and evolution have yet to be disclosed. Here we show that micrometeorite impact-induced ferrous disproportionation could produce a large amount of ferric iron (average Fe 3+ /∑Fe > 0.4) in agglutinate melts returned by Chang'e-5 mission. The disproportionation reaction synchronously generated nanophase metallic iron (npFe 0 ), a dominant formation pathway of npFe 0 within the lunar agglutinate glass. The discovery of the… Show more

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Cited by 20 publications
(7 citation statements)
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“…月球玻璃在揭示月球起源与演化 [1] 、月球表面陨石 撞击历史 [10] 、太空风化机理 [5][6][7][8][9] 、月球内部和表面 水的来源 [12,37,[43][44][45] 和月壤中 3 He含量 [11] 等方面的 最新研究进展, 并讨论月球玻璃的研究意义.…”
Section: 中国科学家使用同位素定年的方法准确测定Ce-5unclassified
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“…月球玻璃在揭示月球起源与演化 [1] 、月球表面陨石 撞击历史 [10] 、太空风化机理 [5][6][7][8][9] 、月球内部和表面 水的来源 [12,37,[43][44][45] 和月壤中 3 He含量 [11] 等方面的 最新研究进展, 并讨论月球玻璃的研究意义.…”
Section: 中国科学家使用同位素定年的方法准确测定Ce-5unclassified
“…明显更薄的沉积非晶层可 能是由于上文推测的CE-5月壤所遭受的微陨石 撞击速度较低, 单次撞击时间产生的气体更少, 也 有可能是因为CE-5月壤暴露时间更短, 遭受到的 撞击次数更少. 值得注意的是, 最新研究表明, 虽 然CE-5月壤的玄武岩矿物的年龄为20亿年, 比以 往采样样品都要年轻, 但是其暴露年龄达到了几亿 年, 是相当成熟的月壤 [8] ; 同时Apollo月壤的研究还 发现沉积层的厚度和暴露年龄并没有明显的相关 性, 推测沉积非晶层大多数是由随机的单次撞击产 生的, 而非反复撞击的积累 [1] . CE-5月壤沉积非晶…”
Section: Ce-5月壤沉积非晶层还具有另外两个不同unclassified
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“…A portion of ferric iron in the form of magnetite was reported in lunar breccia 60016 (Joy et al 2015), Apollo 17 soil 71501 (Burgess and Stroud 2018a), and Chang'e-5 (CE-5) soil (Guo et al 2022). More frequently, the occurrences of ferric iron were found in amorphous silicates such as glass beads and agglutinate glasses (Burgess and Stroud 2018a;Li et al 2022;McCanta et al 2017;Mo et al 2022;Thompson et al 2016;Xian et al 2023). Several formation mechanisms of Fe 3+ were proposed, including oxidation caused by magmatic degassing of H or OH (McCanta et al 2017), diffusion effects (Burgess and Stroud 2018a;Thompson et al 2016), oxidation due to Earth's upper atmosphere (Li et al 2020), or disproportionation reaction (Li et al 2022;Xian et al 2023).…”
Section: Introductionmentioning
confidence: 99%
“…More frequently, the occurrences of ferric iron were found in amorphous silicates such as glass beads and agglutinate glasses (Burgess and Stroud 2018a;Li et al 2022;McCanta et al 2017;Mo et al 2022;Thompson et al 2016;Xian et al 2023). Several formation mechanisms of Fe 3+ were proposed, including oxidation caused by magmatic degassing of H or OH (McCanta et al 2017), diffusion effects (Burgess and Stroud 2018a;Thompson et al 2016), oxidation due to Earth's upper atmosphere (Li et al 2020), or disproportionation reaction (Li et al 2022;Xian et al 2023). However, other studies argued that the presence of Fe 3+ could be due to terrestrial contamination (Griscom 1974;Taylor and Burton 1976).…”
Section: Introductionmentioning
confidence: 99%