Uranium-copper ores occur along the south flank of a domal structure composed of metamorphosed Precambrian strata and a granitic core in the Rum Jungle area south of Darwin, Australia. The deposits were formed by selective replacement along bedding planes in carbonaceous slates, the most favorable host rock, and along cleavage planes in contorted graphitic schist. They appear to have been localized near the intersection of cross faults with a shear zone developed along the axial plane of a major drag fold. The evidence favors a combined uranium-copper mineralization. Both copper-rich and copper-poor types of ore are present.

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