The basal sediments of the Karoo Super Group host the uranium mineralisation within the Letlhakane prospecting license. These Permian to Jurassic aged sediments were deposited in a shallow, broad, westerly dipping basin, generated during rifting of the African continent. The source area for the sediments was the extensively weathered, uranium-bearing, metamorphic rocks of the Achaean Zimbabwe Craton which outcrop in the eastern portion of the license.