Madrid, 30 years (Europe Press)
The Chang’e-5 mission landed in Mons Rümker, in the northern Moon Oceanus Procellarum, and returned 1,731 kilograms of lunar regolith to Earth.
Identification of exotic shells (ie, non-locally derived material from Chang’e-5) in Chang’e-5 regolith can provide important information about the rock diversity and regolithic process in the young Los Angeles area. sailor moon
The seven exotic rocks identified from over 3,000 regolith particles from Chang’e-5 include a high-Ti (titanium) glassy fraction, a low-Ti basalt, an olivine-pyroxenite, magnesite orthosite, a developed petroglyph, and a magnesium-rich olivine fraction. and a glass bead of lava.
The researchers – Professors Zeng Xiaojia, Li Xiongyao and Liu Jianzhong of the Institute of Geochemistry of the Chinese Academy of Sciences (IGCAS) – linked these strange fire shocks to material ejected by impact from other regions of the Moon, more than 50-400 kilometers away. From the Chang’e-5 sampling area.
Through comparison with moon rocks from the US Apollo mission, the researchers found that three strange regolith igneous rocks Chang’e-5 showed unusual petroglyphs and compositional properties.
The high-Ti glassy fraction contains unique minerals among lunar basalts, and probably represents a new type of lunar basalt.
The anorthosite fraction of magnesium, which was not observed in the Apollo samples, shows that magnesium anorthosite is also an important component of the nearby lunar crust.
A pyroclastic glass records a unique volcanic eruption on the lunar surface.
This study was the first to obtain exotic igneous rocks from the lunar basalt unit that are 2,000 million years old. This information will provide the ground truth for modeling the regolith source in the young Mare lunar module.
In addition, the identification of unusual lunar rocks in the Chang’e-5 sample shows that the magmatic components and magmatic activities of the lunar crust are more diverse than previously thought.
This research, published in the journal Nature Astronomy, indicates that unknown geological units still exist on the moon, which could help in planning future lunar exploration missions.
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