Igneous rocks are a type of rock that is formed when molten rock or materials or magma solidifies. There are two kinds of igneous rocks that differ in terms of the place where the molten rock materials solidify and cool down. The two kinds are plutonic or intrusive igneous rocks, which are magma that does not erupt and solidifies underneath Earth’s surface and volcanic or extrusive igneous rocks, which are magma that solidifies on the Earth’s surface.
There are several examples of these rocks such as diorite, granite, pegmatite, gabbro and peridotite, which are considered as intrusive rocks . Basalt, pumice, andesite, rhyolite, scoria and basalt are considered as extrusive rocks. These types of igneous rocks have different colors and qualities such as dark colored, dark grey colored and light colored rocks.
