M-type asteroids are a category of asteroids primarily composed of metallic materials, such as nickel and iron. They are found mainly in the Asteroid Belt between the orbits of Mars and Jupiter. These asteroids are believed to be remnants of the early solar system, representing the building blocks of terrestrial planets. Unlike other types of asteroids, M-type asteroids have a higher density and reflectivity due to their metallic content. They are of great interest for potential mining, as they may contain valuable resources like platinum and other metals. Their unique composition provides insights into the formation and evolution of the solar system.