The first kind of rock that we will cover is igneous.
An igneous rock is formed when melted rocks or minerals, which is called magma, cools off to form a new rock that is called igneous. This can happen in two ways. The first way is extrusive Which is when the magma cools off above the surface. The second way is intrusive where the magma cools off beneath the surface.
An igneous rock has different types of compositions such as feldspar, quartz, magnesium, and iron. Igneous rocks also have different and unique textures like phaneritic, aphanitic, glassy and vesicular.