Quartz in silicon-poor carbonatite

Fluoride-driven growth

Formed via fluoride mediation, distinct from conventional magmatic-hydrothermal quartz.

Huang, Yongshu · Liu, Qi · Feixiang, Liu · Li, Xiaochun · Liu, Yu · Tang, Guoqiang · Fan, Hongrui · Li, Xianhua · Li, Qiuli

Geology 2023

Advantages

δ30Si values range from -4.55‰ to 1.71‰

Large Si isotope fractionation due to Si-O and Si-F bond formation and breakdown

Presence of silicon fluoride species in the fluid