Fig. 6From: Natural analogues: studies of geological processes relevant to radioactive waste disposal in deep geological repositoriesSchematic cross section through the world’s richest uranium deposit at Cigar Lake in Canada. This shows the extent of the primary ore body, major lithological types, the extent of a hydrothermal halo which induced some secondary uranium mobilisation and groundwater flow pathways (after Cramer and Smellie 1994)Back to article page