The main mineral component of granite is quartz, along with feldspar and mica. Granite is an igneous rock formed from the slow crystallization of magma beneath the Earth's surface, leading to its coarse-grained texture. Quartz, which is a hard and resistant mineral, typically makes up about 20-60% of the granite composition, providing durability and strength. Feldspar is another significant mineral in granite, contributing to its lighter color and texture. This combination of minerals results in granite’s characteristic appearance and makes it a popular material in construction and decorative applications.