Canyon Diablo meteorites come from the most famous impact crater in the world; Meteor Crater, Arizona. These iron meteorites are classified as IA, coarse octahedrite. Many contain inclusions of graphite. When a graphite inclusion pops out of the host meteorite it is called a graphite nodule. Another interesting fact about Canyon Diablo is the occurrence of carbonados or black diamonds formed by impact on earth or in space. These meteorites are typically characterized by classic meteorite features like sharp ridges, holes and bowls.