辉石, also known as "pyroxene," is a group of important rock-forming minerals found in many igneous and metamorphic rocks. These minerals are typically characterized by their dark colors and are composed mainly of silicate materials. They play a crucial role in the Earth's geology, influencing the formation and characteristics of various types of rocks. There are several types of 辉石, including 单斜辉石 (monoclinic pyroxene) and 斜方辉石 (orthorhombic pyroxene), each with distinct crystal structures and chemical compositions. These minerals are often studied in geology and petrology to understand the processes that shape the Earth's crust and mantle.