Ore systems with IOA, IOCG, albitite-hosted U and affiliated deposits





Ore systems with IOA, IOCG, albitite-hosted U and affiliated deposits

Louise Corriveau (Commission géologique du Canada)

Leaders and affiliations : L. Corriveau (CGC-Québec), E. Potter (CGC-Ottawa), D. Harlov (GFZ), X.-F. Zhao (China University of Geosciences)

Description : Iron oxide and alkali-calcic alteration systems hosting skarn, iron oxide-apatite±REE (IOA), iron oxide copper-gold (IOCG, and Co, Bi or Mo variants), and albitite-hosted U and Au-Co-U deposits are characterised by unique fluids, melts and fluid-rock reactions that generate metasomatites and polymetallic ores. The course provides an overview of the geological, mineralogical, structural, and geochemical attributes of these ore systems and their magmatic and tectonic contexts using global reference settings (e.g., the Great Bear magmatic zone, the Olympic Cu-Au province and the Andes). Observations on the space-time relationships among deposits and alteration facies will be reconciled with current understanding of the behavior of fluids, melts (including iron oxide and salt melts) and metasomatic reactions to further knowledge on mineralization paths from depth to surface. System attributes are then linked to their geophysical expressions at a variety of scales (deposit, district, upper crustal and lithospheric) with important implications for exploration globally. The mineral potential of significantly under-explored North American and Chinese settings, such as those of the Great Bear magmatic zone, Central Mineral belt, Grenville Province, Kangdian district, and Middle-Lower Yangtze River metallogenic belt, is then addressed through comparison with the Australian and Andean examples. Finally the course reviews the footprint of Grenvillian case examples metamorphosed to amphibolite and granulite facies grade to optimise exploration of Precambrian terranes in Canada and globally.

Number of participants (Min/Max) : 10/70

Language : course offered in english only

Duration : 2 days

Date : Pre-congress

Associated special session / Field trip : to be determined