Academic Journal of Environment & Earth Science, 2025, 7(5); doi: 10.25236/AJEE.2025.070510.
Muhammad Talha1,2
1School of Mining Engineering, Jiangxi University of Science and Technology, Ganzhou, Jiangxi, 341000, China
2Graduate School, Jiangxi University of Science and Technology, Ganzhou, Jiangxi, 341000, China
Myrmekite, a quartz-plagioclase symplecticite commonly developed in granitic and metamorphic rocks, is widely recognized as a key indicator of sub-solidus reactions and metasomatic processes. Despite extensive research, its origin remains debated, particularly in complex magmatic-hydrothermal systems associated with rare-metal mineralization. Myrmekite in the Lingshan granitic pluton provides a clear record of fluid-rock interaction during the late magmatic to hydrothermal transition associated with rare-metal mineralization. Petrography shows two distinct types: (1) fine-grained myrmekite formed by early Na-Ca metasomatism along K-feldspar-plagioclase contacts, and (2) coarser myrmekite produced by partial replacement of matrix quartz by plagioclase. Both types were subsequently modified by K-rich fluids that generated wart, ghost, and other types of myrmekite textures. These features collectively demonstrate that myrmekite formation reflects sequential pulses of magmatic fluids, first Na-Ca rich, then K-rich released during cooling of the Lingshan intrusion.
Myrmekite; Magmatic fluids; Metasomatism
Muhammad Talha. Review on Myrmekite Structure: A Case Study in Lingshan Granite, China. Academic Journal of Environment & Earth Science (2025), Vol. 7, Issue 5: 77-85. https://doi.org/10.25236/AJEE.2025.070510.
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