Targeted Geoscience Initiative 5 : contributions to the understanding and exploration of porphyry deposits / edited by A. Plouffe and E. Schetselaar. : M42-616E-PDF

"Porphyry deposits are high-volume, low-grade orebodies consisting of disseminated sulfide minerals genetically related to felsic to intermediate intrusions. Previous compilations have shown that they represent the world's largest source of copper, approximately half the source of the world's molybdenum, and contain significant quantities of gold, silver, tungsten, and tin. In Canada, porphyry deposits are dominantly present within the Cordillera of British Columbia and Yukon, and notable porphyry-style deposits occur in the southern Superior Craton and the Appalachian Orogen. … This Geological Survey of Canada (GSC) Bulletin contains 10 papers dedicated to advancing knowledge of the tectono-magmatic settings of porphyry-style mineralization and the development of new methods for their exploration. The research was conducted by the GSC and partner organizations under the auspices of the Government of Canada's Targeted Geoscience Initiative 5 (TGI-5) program, which aimed to develop new geoscience knowledge and techniques to facilitate the discovery of deep mineral deposits"--Summary, pages 1, 2.

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