A. Hamid Mumin

Distinguished Lecturer 2010-11

For his ground-breaking work in the identification and discovery of Iron Oxide Copper-Gold deposits.

Hamid Mumin graduated in geo-engineering from the University of Toronto in 1985, where he also completed a M.A.Sc. in economic geology. He completed a doctorate degree and a postdoctoral fellowship at the University of Western Ontario in 1994. In his capacity as a mine, exploration and research geologist, and as a project manager in Canada, Africa and South America, Mumin has participated in a number of resource discoveries and developments. He joined Brandon University in 1995 where he currently teaches economic geology. Hamid has published numerous papers and technical reports on economic geology, and is co-editor of “Ore Mineral Atlas” and “Exploration for Iron Oxide Copper-Gold Deposits: Canada and World Analogues.”

As the 2007-2008 president of Geoscientists Canada, Hamid tackled the problems geoscientist encounter with mobility and registration. He remains dedicated to mineral exploration, responsible development and the geology of mineral deposits.

As Distinguished Lecturer A. Hamid Mumin will present:
Iron Oxide Copper-Gold Deposits in Genetic Context

Hydrothermal iron oxide copper-gold (IOCG) deposits inspire controversy and debate over their classification, origin and, in particular, their relationship to a variety of disparate deposit groups. The IOCG deposit-type proper is comprised of a recognizable group of hydrothermal, primarily igneous-associated deposits with: i) greater than 15 to 20% hydrothermal magnetite and/or hematite genetically associated with economic mineralization; ii) economic accumulation of one or more of Fe, Cu, Au, U, Ag, Co, Bi, Mo ± a variety of other metals in minor or localized concentrations; and iii) spatially extensive and diagnostic hydrothermal systems characterized by a core zone of higher temperature alkali-iron (Na-K-Fe) alteration, and distal lower temperature K-Fe-Ca-Si alteration.

A genetic and spatial association of IOCG systems to porphyry copper, iron oxide apatite, iron oxide copper-gold, skarn and epithermal deposit types is well manifested in the 1.9 to 1.8 Ga Great Bear Magmatic Zone (GBMZ) in the Northwest Territories, where superb preservation and bedrock exposure provide a measure of much needed clarity. Felsic to intermediate stratovolcano complexes are preserved intermittently along the GBMZ. Their subvolcanic intrusions generated giant IOCG fertile systems, which in some areas spatially exceed 100 square kilometres in exposed extent. Within the same hydrothermal systems are found a continuum of porphyry, IOCG and epithermal deposit styles that, in isolation and out of context, can be mistaken for disparate and unrelated events.

In modelling the IOCG deposits of the GBMZ, a pattern of alteration, mineralization and geotectonic setting emerges that is both distinctly different, yet clearly resembles some classic porphyry systems. Some of the underlying reasons for these similarities and differences are illustrated and discussed. Most importantly, placing IOCG systems in their global genetic context provides very attractive and robust models for exploration of igneous-hydrothermal systems.

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