Mineralization and gossans in the Wadi Wassat-Wadi Qatan region, Kingdom of Saudi Arabia

Very large bodies of stratabound iron sulfides in volcanic rocks of the Wadi Wassat-Wadi Qatan region of Saudi Arabia are capped at surface by numerous iron oxide-rich gossan outcrops. The gossan at Hadbah overlies a low-grade nickel-bearing sulfide body, but most of the sulfide lenses are almost devoid of base metals. Supergene alteration of pyrrhotite-pentlandite has given rise, in profile, to a narrow (