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

作　　者：Chunlai Li Hao Hu Meng-Fei Yang Zhao-Yu Pei Qin Zhou Xin Ren Bin Liu Dawei Liu Xingguo Zeng Guangliang Zhang Hongbo Zhang Jianjun Liu Qiong Wang Xiangjin Deng Caijin Xiao Yonggang Yao Dingshuai Xue Wei Zuo Yan Su Weibin Wen Ziyuan Ouyang 

机构地区：[1]Key Laboratory of Lunar and Deep Space Exploration,National Astronomical Observatories,Chinese Academy of Sciences,Beijing 100101,China [2]Lunar Exploration and Space Engineering Center,Beijing 100190,China [3]Beijing Institute of Spacecraft System Engineering,Beijing 100094,China [4]Department of Nuclear Physics,China Institute of Atomic Energy,Beijing 102413,China [5]State Key Laboratory of Lithospheric Evolution,Institute of Geology and Geophysics,Chinese Academy of Sciences,Beijing 100029,China [6]Institute of Geochemistry,Chinese Academy of Sciences,Guiyang 550081,China

出　　处：《National Science Review》2022年第2期16-28,共13页国家科学评论（英文版）

基　　金：supported by the Key Research Program of the Chinese Academy of Sciences(ZDBS-SSW-JSC007)。

摘　　要：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 1.40-9.35μm,while 95%of the soils by mass are within the size range of 4.84-432.27μm.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.

关 键 词：Chang’E-5 lunar soils physical properties PETROGRAPHY MINERALOGY CHEMISTRY 

分 类 号：V476.3[航空宇航科学与技术—飞行器设计]