Exploration at its three Tanzanian uranium projects, Mtonya, Ruvuma and Ruhuhu is on-going and aimed at ascertaining their economic potential.

Southern Tanzanian Geology

A large part of the southern Tanzania geology comprises Karoo rocks, a 6,000 metre thick succession of terrigenous sediments that accumulated in NNE-NE striking intracratonic basins during the Late Paleozoic-Early Mesozoic. The Ruhuhu Basin in southwest Tanzania is a typical east-African Karoo depositional sequence. The basal series comprises glacial deposits, which in turn are overlain by fluvial-deltaic coal-bearing sediments succeeded by arkoses and continental red beds. Transitional carbonaceous shales with coals gradually develop into thick lacustrine series which are topped by Late Permian bone-bearing beds. The Triassic is characterised by a very thick fluvio-deltaic succession of siliciclastics resting with regional unconformity on the Permian. This Early Triassic sequence exhibits well-developed repetitive depositional cycles. The depositional evolution of the Ruhuhu Basin was controlled by both tectonic and climatic factors. During the basin's evolution, important energy resources were deposited such as considerable resources of coal and source rocks of moderate potential for hydrocarbon generation. Uranium enrichment is observed in the Triassic arenaceous series with diagenetic alteration and subsequent cementation.