Felsic rocks are a type of igneous rock that are rich in silica and contain a high percentage of light-colored minerals, such as quartz and feldspar. These rocks typically form from the slow cooling of magma beneath the Earth's surface, resulting in a coarse-grained texture. Common examples of felsic rocks include granite and rhyolite. Due to their composition, felsic rocks are generally less dense than mafic rocks, which are darker and richer in iron and magnesium. Felsic rocks are often found in continental crust and are associated with volcanic activity, contributing to the formation of mountains and volcanoes.