The gold mineralization of the Red Sea Hills area occurs within Niferdeib greenstone belts trending roughly north-east. They are from north to south: the Onib-Hamissana-Sol Hamed belt (Onib and Eight gold mines), the Serakoit-Gebeit-Fodikwan belt (Serakoit and Gebeit gold mines), the Ariab-Oshib-Arbaat belt, the Derudeb-Sinkat belt and the Karora belt.
In the Ariab area, 10 gold-bearing volcanogenic massive sulphide (VMS) deposits have been identified and investigated.
- La Mancha Resources Inc owns a 40% interest in the Hassaï mine, located in the north-eastern part of Sudan. The Hassaï property is the only mine in operation in Sudan and La Mancha is acting as the operator. The remaining ownership of the mine is held by Sudanese government agencies and by French private entities, respectively comprising of a 56% and 4% ownership share. Hassaï mine produced 34,760 oz of gold attributable to La Mancha in 2007. Preliminary exploration work is being done in the Mt. Nuba area.
- Gebeit is an ancient gold mine, which was worked intermittently between 1904 and1989. Reserves in 1986 were estimated to be 375 000 t at a grade of 15 g/t Au.
- Arab Mining, a joint venture between the government (60%) and La Source, started production at the Hadal Auatib Gold Mine in 1991.
- Compagnie Miniere Or operates the Ariab Mbabane (Inguessana Hills) mine which reportedly produces 5 t of gold per year.
- The VMS deposits of the Ariab area are Habdul Auteb, Oderuk, Hassai, Talaideruk, Baderuk, Hassai North, Komoeb, H Veins and Ganeit. The combined gold content has been estimated at 32,8 t.
- New Kush Exploration and Mining Company has shown interest in mining gold from Kapoeta East County of Eastern Equatoria state. New Kush Exploration and Mining Company are a merger of two companies-British and South African.