片岩, or "schist," is a type of metamorphic rock characterized by its layered texture and the presence of visible mineral grains. It forms under high pressure and temperature conditions, often from the alteration of slate or granite. The minerals commonly found in schist include mica, quartz, and feldspar, which contribute to its shiny appearance. This rock is typically used in construction and landscaping due to its durability and aesthetic appeal. Schist can be easily split into thin sheets, making it suitable for various applications, including flooring, roofing, and decorative stonework. Its unique patterns and colors also make it popular in interior design.