Volcanic activities can generate economically valuable mineral deposits

Typically, most of the magmas hold 4-6% of water. Magmas containing 6-8% water are considered super-wet magmas, and the Department of Earth and Planetary Sciences, ETH Zürich suggests that such hydrous volcanoes can economically valuable mineral resources, especially Copper deposits. While the super-wet magmas are abundant at greater depths and not expected to persist at shallow depths, researchers think that are far more common than previously thought.