C-2: Fluid-rock reactions and nano- to microstructural evolution during metamorphism and alteration.

[PC2-04] Nb contents reveal the origin of metamorphic fluids in jadeitite

*Xin Jin¹, Tatsuki Tsujimori², Donna L. Whitney³, Yu-Xiu Zhang⁴, Wei-Dong Sun¹ (1. Center of Deep Sea Research, Institute of Oceanology, Chinese Academy of Sciences, Qingdao (China), 2. Center for North East Asian Studies, Tohoku University, 980-8576, 41 Kawauchi, Aoba-Ku, Sendai, Miyagi (Japan), 3. Department of Earth and Environmental Sciences, University of Minnesota, Minneapolis, Minnesota (United States of America), 4. College of Earth and Planetary Sciences, University of Chinese Academy of Sciences, 19A Yuquan Road, Beijing (China))

Keywords:high field strength elements, rutile, jadeitite, high-pressure metamorphism, subduction fluids