EPITHERMAL Au-Ag and PORPHYRY Cu-Au EXPLORATION
by Greg Corbett
Two days of powerpoint lectures focus upon mineral exploration for epithermal and porphyry ore deposits derived from Dr Corbett’s 35 years field experience, and draws on earlier short courses provided with the late Terry Leach from the early 1990’s. Exploration and mining examples from over 40 countries are used to delineate the characteristics of different epithermal and porphyry ore types, and controls to mineralisation, using tools such as alteration, structure and breccias. The exploration implications are considered throughout and a final section considers geological features recognised in exploration marginal to ore bodies.
The new colour 350 page course manual in preparation with over 1000 rock photos represents a significant update since Corbett and Leach, 1998, Economic Geology Special publication 6, 237 p. An exploration exercise is provided at the beginning and a possible solution at the end.