Recycled carbonates in the mantle sources of natural kamafugites; a zinc isotope perspective

• Published in: The American mineralogist Vol. 108; no. 5; pp. 987 - 998
• Main Authors: Ma Lei, Ma Lei, Liu Shengao, Liu Shengao, Zhao Zhidan, Zhao Zhidan, Yu Xuehui, Yu Xuehui
• Format: Journal Article
• Language: English
• Published: Washington Mineralogical Society of America 01.05.2023; Walter de Gruyter GmbH
• Subjects: Aluminum oxide; Asia; Carbon dioxide; Carbonates; Cenozoic; chain silicates; China; clinopyroxene; Correlation; diopside; Far East; framework silicates; geochemical cycle; Geochemistry; igneous and metamorphic rocks; igneous rocks; Isotopes; kamafugite; Kamafugites; leucite; magmas; magmatic differentiation; mantle; Melting; Melts; metals; Modelling; nepheline; nepheline group; Orogeny; oxides; Peridotite; perovskite; Petrology; plate tectonics; pyroxene group; Qinling Mountains; recycled carbonates; rich source; Silica; Silicates; Silicon dioxide; stable isotopes; subduction; Tracers; Volcanic rocks; West Qinling; Zinc; Zinc isotopes; Zn isotopes; Zn-66

Kamafugites are strongly silica-undersaturated melts that are difficult to produce by partial melting of volatile-free peridotites but can be produced experimentally in the presence of CO2. Nevertheless, there is not yet direct evidence for a CO2-rich mantle source and the possible presence of recyc...