👉 Vitreous basalt is a type of volcanic rock that is formed from lava and is characterized by its soft, porous texture. It is typically found in areas where there has been high pressure or temperature for long periods of time, such as on the surface of Earth's mantle or under the Earth's crust. Vitrified basalt is a type of volcanic rock that has undergone metamorphism and has formed from the solidification of lava.