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Characteristics of the lunar samples returned by the Chang’E-5 mission

Forty-five years after the Apollo and Luna missions returned lunar samples, China's Chang’E-5 (CE-5) mission collected new samples from the mid-latitude region in the northeastern Oceanus Procellarum of the Moon. Our study shows that 95% of CE-5 lunar soil sizes are found to be within the range...

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Detalles Bibliográficos
Autores principales: Li, Chunlai, Hu, Hao, Yang, Meng-Fei, Pei, Zhao-Yu, Zhou, Qin, Ren, Xin, Liu, Bin, Liu, Dawei, Zeng, Xingguo, Zhang, Guangliang, Zhang, Hongbo, Liu, Jianjun, Wang, Qiong, Deng, Xiangjin, Xiao, Caijin, Yao, Yonggang, Xue, Dingshuai, Zuo, Wei, Su, Yan, Wen, Weibin, Ouyang, Ziyuan
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Oxford University Press 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8974359/
https://www.ncbi.nlm.nih.gov/pubmed/35382442
http://dx.doi.org/10.1093/nsr/nwab188
Descripción
Sumario:Forty-five years after the Apollo and Luna missions returned lunar samples, China's Chang’E-5 (CE-5) mission collected new samples from the mid-latitude region in the northeastern Oceanus Procellarum of the Moon. Our study shows that 95% of CE-5 lunar soil sizes are found to be within the range of 1.40–9.35 μm, while 95% of the soils by mass are within the size range of 4.84–432.27 μm. The bulk density, true density and specific surface area of CE-5 soils are 1.2387 g/cm(3), 3.1952 g/cm(3) and 0.56 m(2)/g, respectively. Fragments from the CE-5 regolith are classified into igneous clasts (mostly basalt), agglutinate and glass. A few breccias were also found. The minerals and compositions of CE-5 soils are consistent with mare basalts and can be classified as low-Ti/low-Al/low-K type with lower rare-earth-element contents than materials rich in potassium, rare earth element and phosphorus. CE-5 soils have high FeO and low Mg index, which could represent a new class of basalt.