Earth Sciences

Two-stage fluid pathways generated by volume expansion reactions: insights from the replacement of pyrite by chalcopyrite

Y. Zhang, Y. Cai, et al.

Discover the fascinating world of mineral replacement reactions! This research reveals how volume expansion can both accelerate and inhibit transformations, as seen in the conversion from pyrite to chalcopyrite, conducted by the experts Yang Zhang, Yuanfeng Cai, Yang Qu, Qin Wang, Lixin Gu, and Gaojun Li.

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Playback language: English

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Abstract

Volume expansion reactions during mineral replacement, like pyrite to chalcopyrite, involve competing processes. Initially, reaction-induced fractures enhance the reaction. However, these fractures fill with compacted products, hindering further interaction between fluids and the pyrite surface. This two-stage process shows that volume expansion both accelerates and inhibits mineral replacement.

Publisher

Scientific Reports

Published On

Nov 17, 2020

Authors

Yang Zhang, Yuanfeng Cai, Yang Qu, Qin Wang, Lixin Gu, Gaojun Li

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