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
Tags
mineral replacement
pyrite
chalcopyrite
volume expansion
reaction-induced fractures
interactions
geochemistry
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