In the talk Ian …………….Outlined recent exploration of Paleoproterozoic cobaltiferous pyritic deposits near Broken Hill.Suggested modern analogues.Commented on the formation of Proterozoic sedimentary basin deposits.Discussed an end-member syngenetic model for these deposits.Commented on the formation of other cobalt deposit types including; laterite Ni/Co, African Copperbelt Cu/Co and Mn/Co sea floor nodules and crusts.And finished, to loud applause from a full house, with some interesting trends in recent Co use.