Major Elements Concentrations in Chang’E-3 Landing Site from Active Particle-Induced X-ray Spectrometer

On 14 December 2013 (UTC), China’s Chang’E-3 (CE-3) succeeded in landing on the Moon’s surface. The CE-3 site is northern Mare Imbrium and several tens of meters away from rim a young crater with few hundred diameter. In-situ measurements lunar soil around roving area were conducted Active Particle-induced X-ray Spectrometer (APXS) onboard Yutu rover. Three relatively samples investigated. Previous studies suggested that these are new type basalt, not discovered yet previous missions before in-situ measurements. It plays an essential role promoting understanding volcanic history. However, their results deviated, thus scrutinizing data as per our optimized model to derive more precise result necessity. In this paper, we present for analysis based APXS major elements concentrations. has advantages reliability being independent calibration by ground standards. particle size effect applied fluorescence modeling correction, improving accuracy determining elemental concentrations actual measurement. Our distinct correlation plots carrying out comparison regolith Apollo, Luna, Chang’E-5 missions, indicating region apart or laboratory detection prior suggests kind mare basalt unusual petrological characteristics compared similar geochemical properties western Procellarum (WPI), signature Procellarum.