Phyllite is a metamorphic rock that is typically composed of mica and quartz. It is a fine-grained rock that exhibits a laminated appearance due to the parallel alignment of the mica flakes. Phyllite is also referred to as phyllitic schist due to its schistose texture. Other synonyms for phyllite include slatey shale, micaschist, and argillite. Phyllite is commonly found in regions that have undergone regional metamorphism, such as along the edges of mountain ranges. Its unique appearance makes it a valuable building material for construction and decorative purposes, and it is often used for flooring, veneer, and countertops.