Exploration and discovery of base and precious-metal deposits in the circum-Pacific region during the last 25 years

This report describes the exploration and discovery histories of 54 major base- and precious-metal deposits around the Pacific rim over the last 25 years (1970-95). The discoveries are considered to be representative and to include all those of world-class deposits. Each case history places the discovery in a historical context and summarizes the geological, geochemical and geophysical work undertaken prior to discovery, followed by that completed through to production. The time frames and organizational aspects of the exploration programmes are emphiasized along with any special "twists". Each case history is prefaced by the background geology, including tonnage and grade data, and concludes with a brief summary.