The Lufilian Arc (or Lufilian Belt) is part of a system of orogenic belts in southern Africa formed during the Pan-African orogeny, a stage in the formation of the Gondwana supercontinent.It extends across eastern Angola, the Katanga Province of the southern Democratic Republic of the Congo and the northwest of Zambia.The arc is about 800 kilometres (500 mi) long. It has global economic importance owing to its rich deposits of copper and cobalt.