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cctv reporters learned from the national astronomical observatory of the chinese academy of sciences that on september 17, a joint research team led by li chunlai of the national astronomical observatory of the chinese academy of sciences, hu hao of the china lunar exploration and space engineering center, and yang mengfei of the beijing institute of control engineering published the first research paper on the chang'e-6 returned samples in national science review, elaborating on the physical, mineralogical and geochemical characteristics of the returned samples.

characteristics of lunar soil and rock debris

the paper points out that the returned samples from chang'e 6 have a low density, indicating that their structure is relatively loose and their porosity is high. particle analysis shows that the particle size of the lunar soil presents a bimodal distribution, suggesting that the samples may have experienced a mixture of different sources.

in addition, the rock fragments collected by chang'e-6 are mainly composed of basalt, breccia, cementite, light-colored rocks and glassy materials. among them, basalt fragments account for 30% to 40% of the total, and its minerals are mainly pyroxene, plagioclase and ilmenite, with extremely low olivine content. breccia and cementite are composed of basalt fragments, glass beads, glass fragments and a small amount of light-colored rock fragments such as plagioclase and syenite, further revealing the complexity of the source of the samples.

△typical image of chang'e 6 returned samples