Dec 10, 2009 · [size=24][left]Commodity: Gypsum Locality: North of Port Sudan Coordinate: Lats. 20° 09′ 20° 11′ N Longs. 37° 07′ 37° 09′ E Introduction: Gypsum forms a 25 km NorthSouth trending discontinuous belts loed 5 to 9 km inland from the Red Sea Shore north of Port Sudan (Fig, 1).Three gypsiferous localities within the belts have received much attention and have .