中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
Nature of the lunar far-side samples returned by the Chang'E-6 mission

文献类型:期刊论文

作者Chunlai Li; Hao Hu; Meng-Fei Yang; Jianjun Liu; Qin Zhou; Xin Ren; Bin Liu; Dawei Liu; Xingguo Zeng; Wei Zuo
刊名National Science Review
出版日期2024
卷号11期号:11
DOI10.1093/nsr/nwae328
英文摘要

The Chang’E-6 (CE-6) mission successfully achieved return of the first samples from the far side of theMoon. The sampling site of CE-6 is located in the South Pole-Aitken (SPA) basin—the largest, deepest andoldest impact basin on the Moon. The 1935.3 g of CE-6 lunar samples exhibit distinct characteristicscompared with previous lunar samples. This study analyses the physical, mineralogical, petrographic andgeochemical properties of CE-6 lunar scooped samples. The CE-6 soil has a significantly lower bulk density(0.983 g/cm3) and true density (3.035 g/cm3) than the Chang’E-5 (CE-5) samples. The grain size of theCE-6 soil exhibits a bimodal distribution, indicating a mixture of different compositions. Mineralogically,the CE-6 soil consists of 32.6% plagioclase (anorthite and bytownite), 19.7% augite, 10% pigeonite and 3.6%orthopyroxene, and with low content of olivine (0.5%) but high content of amorphous glass (29.4%).Geochemically, the bulk composition of CE-6 soil is rich in Al2O3 (14%) and CaO (12%) but low in FeO(17%), and trace elements of CE-6 soil such as K (∼630 ppm), U (0.26 ppm), Th (0.92 ppm) and rare-earthelements are significantly lower than those of the lunar soils within the Procellarum KREEP Terrane. Thelocal basalts are characterized by low-Ti (TiO2, 5.08%), low-Al (Al2O3 9.85%) and low-K (∼830 ppm),features suggesting that the CE-6 soil is a mixture of local basalts and non-basaltic ejecta. The returned CE-6sample contains diverse lithic fragments, including local mare basalt, breccia, agglutinate, glasses andleucocrate. These local mare basalts document the volcanic history of the lunar far side, while thenon-basaltic fragments may offer critical insights into the lunar highland crust, SPA impact melts andpotentially the deep lunar mantle, making these samples highly significant for scientific research.

 

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语种英语
源URL[http://ir.gyig.ac.cn/handle/42920512-1/15694]  
专题地球化学研究所_月球与行星科学研究中心
天体地球化学研究组
作者单位1.Chinese Acad Sci, Key Lab Lunar & Deep Space Explorat, Natl Astron Observ, Beijing 100101, Peoples R China
2.Lunar Explorat & Space Engn Ctr, Beijing 100190, Peoples R China
3.Beijing Inst Spacecraft Syst Engn, Beijing 100094, Peoples R China
4.Chinese Acad Sci, Inst Geochem, Guiyang 550081, Peoples R China
推荐引用方式
GB/T 7714
Chunlai Li,Hao Hu,Meng-Fei Yang,et al. Nature of the lunar far-side samples returned by the Chang'E-6 mission[J]. National Science Review,2024,11(11).
APA Chunlai Li.,Hao Hu.,Meng-Fei Yang.,Jianjun Liu.,Qin Zhou.,...&Ziyuan Ouyang.(2024).Nature of the lunar far-side samples returned by the Chang'E-6 mission.National Science Review,11(11).
MLA Chunlai Li,et al."Nature of the lunar far-side samples returned by the Chang'E-6 mission".National Science Review 11.11(2024).

入库方式: OAI收割

来源:地球化学研究所

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