Periclase
Periclase is a mineral composed primarily of magnesium oxide (MgO). It typically forms in high-temperature environments, such as in metamorphic rocks or as a result of volcanic activity. Periclase is known for its high melting point and is often used in refractory materials, which are designed to withstand extreme heat.
This mineral usually appears as colorless or white crystals, but it can also be found in shades of green or brown due to impurities. Periclase is important in various industrial applications, including the production of steel and cement, where it helps improve the durability and heat resistance of materials.