Why are many hydrothermal veins located near intrusive igneous rocks?

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mineral deposit The relationship between hot springs and epithermal veins.

Many hydrothermal veins are located near intrusive igneous rocks because these rock bodies act as essential heat sources. This heat drives convective circulation within hydrothermal solutions, which are responsible for transporting and depositing minerals.1

As these solutions flow through fissures, the minerals precipitate due to cooling, boiling, or chemical reactions between the fluid and the surrounding rock. Additionally, intrusive systems often remain at elevated temperatures for extended periods, facilitating the presence of volatile-rich fluids that further aid in the leaching, transport, and concentration of mineral constituents derived from the original magma.12