Mineralization occurs either as structurally controlled veins and breccias discordant to the stratigraphy and less commonly as stratabound mineralization either in extrusive rocks or permeable sedimentary facies . Mineralization may be primary, that is magmatic-related or as secondary mineralization due to leaching, remobilization and re-precipitation. The principal uranium mineral in volcanic deposits is pitchblende, which is usually associated with molybdenite and minor amounts of lead , tin and tungsten mineralization. 
Extract Resources had earlier rejected overtures from Rössing Uranium for joint development, using the Rössing treatment plant, though in February 2011 Extract confirmed that it was holding discussions with Rio Tinto about combining its Husab Uranium Project with Rio's adjacent Rössing Uranium mine (% owned), "with a view to capturing the significant potential synergies that could be generated from a joint development of the two projects". These discussions were inconclusive. Rio Tinto had direct equity in Extract of %, and % of Kalahari (formerly 19% overall in Husab) but sold both holdings to Taurus.