👉 Geyserite is a type of igneous rock that forms from the eruption of hot, molten lava at the surface of a volcano. It is composed mainly of silica sand and is highly reactive to water, which causes it to form geyseric eruptions. Geyserites are often found in the Earth's crust or underlain rocks, and they can be found in various environments such as the ocean floor, deep underground, or even on the surface of mountains and other high