Ai-Cheng Zhang on Muck Rack

Ai-Cheng Zhang

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Articles

Petrologic evidence for core sulfur degassing in partially differentiated planetesimals

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By Shu-Zhou Wang, Ai-Cheng Zhang, Tian-Ran Trina Du, Jiani Chen
| Science Magazine Verified
Abstract Partial differentiation hypothesis is a scenario for interpreting the internal structure of planetesimals and the genetic relationship between chondrites and nonchondrites. However, no petrologic records supporting this hypothesis have been reported yet. Here, we report sulfide replacement textures of melilite and olivine in Ornans-like chondrites, whose occurrences are correlated with the degree of thermal metamorphism of the host chondrites.
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Carbonate record of temporal change in oxygen fugacity and gaseous species in asteroid Ryugu - Nature Geoscience

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By Wataru Fujiya, Noriyuki Kawasaki, Kazuhide Nagashima, Naoya Sakamoto, Kouki Kitajima, Yoshinari Abe, Jérôme Aléon, Sachiko Amari, Ken-ichi Bajo, Audrey Bouvier, Richard Carlson, Byeon-Gak Choi, Nicolas Dauphas, Tommaso Di Rocco, Ryota Fukai, Ikshu Gautam, Makiko K. Haba, Yuki Hibiya, Hiroshi Hidaka, Hisashi Homma, Peter Hoppe, Gary R. Huss, Kiyohiro Ichida, Tsuyoshi Iizuka, Trevor Ireland, Akira Ishikawa, Shoichi Itoh, Thorsten Kleine, Alexander N. Krot, Yuki Masuda, Mayu Morita, Frédéric Moynier, Ann Nguyen, Larry R. Nittler, Changkun Park, Liping Qin, Maria Schönbächler, Kentaro Terada, Tomohiro Usui, Sohei Wada, Richard Walker Verified, Qing-zhu Yin, Tetsuya Yokoyama, Shigekazu Yoneda, Edward Young, Ai-Cheng Zhang, Takaaki Noguchi, Kanako Sakamoto, Akiko Miyazaki, Aiko Nakato, Toru Yada, Satoru Nakazawa, Sei-ichiro Watanabe, Shogo Tachibana
| Nature Verified
Abstract The Hayabusa2 spacecraft explored asteroid Ryugu and brought its surface materials to Earth. Ryugu samples resemble Ivuna-type (CI) chondrites—the most chemically primitive meteorites—and contain secondary phyllosilicates and carbonates, which are indicative of aqueous alteration.
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Evidence of metasomatism in the interior of Vesta

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By Huiming Bao, Li-Hui Chen, Hisayoshi Yurimoto, Ai-Cheng Zhang
| Nature Verified
Abstract Diogenites are a group of meteorites that are derived from the interior of the largest protoplanet Vesta. They provide a unique opportunity to understanding together the internal structure and dynamic evolution of this protoplanet. Northwest Africa (NWA) 8321 was suggested to be an unbrecciated noritic diogenite meteorite, which is confirmed by our oxygen and chromium isotopic data.
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