orthoclase (feldspar)

Orthoclase is a common type of mineral found in many rocks, especially granite. It belongs to the feldspar family, which are tectosilicate minerals rich in potassium. Orthoclase has a crystalline structure that forms in a range of colors, including pink, white, or tan. It’s known for its hardness and can break with a characteristic cleavage, meaning it splits smoothly along specific planes. This mineral plays a vital role in the Earth's crust, contributing to the formation of rocks and providing insight into geological processes. Its appearance and composition make it important for both geology and mineral collecting.