Web: https://gacmac-quebec2019.ca/
Includes the following sessions:
SS-RE14 Recent advances on ore-forming processes related to magmatic Ni-Cu-PGE, Cr-PGE, and Fe-Ti-V deposits and their implications for mineral exploration
Convenors: Michel Houle (michel.houle@canada.ca), Jennifer Smith (jennifer.smith6@canada.ca), Anne-Aurelie Sappin (anne-aurelie.sappin@canada.ca)
Magmatic ore deposits of Ni-Cu-PGE, Cr-PGE, and Fe-Ti-V represent an important class of mineral deposits, forming the foundation to a number of established and emerging mining camps across Canada. These commodities are recovered from many different mineral deposit types that are primarily of magmatic origin, and associated with mafic to ultramafic rocks that are commonly altered to some degree by secondary processes. Canada is endowed with a wide range of magmatic environments favourable for economic concentrations of Ni-Cu-PGE, Cr-PGE, and Fe-Ti-V mineralization that are neither temporally nor geographically restricted. World-class deposits are increasingly difficult to find and exploit, and consequently a global perspective is required to understand such factors as geological setting, plumbing system architecture, country rocks interaction, transport and deposition of ore-forming minerals, and the causes of subsequent modification (e.g., late-stage magmatic-hydrothermal alteration and deformation).
This special session is seeking to address key ingredients for the genesis of economic Ni-Cu-PGE, Cr-PGE, and Fe-Ti-V mineralization within established and emerging mining camps in Canada and elsewhere around the world.
SS-RE1 The cratonic mantle, its carbonate-rich melts, kimberlites and carbonatites
Convenors: Maya Kopylova (mkopylov@eos.ubc.ca), Anton Chakhmouradian (Anton.Chakhmouradian@ad.umanitoba.ca)
Canada is a geologic heaven for those who want to study cratons and their volumetrically insignificant, but economically important carbonate-rich mantle melts. We invite contributions on the composition, architecture and petrology of the cratonic mantle, the birthplace of kimberlites, carbonatites and other related mantle melts. Is metasomatism central to the generation of these melts, and if so, what kind of metasomatism? Why are kimberlites and carbonatites commonly separated in space or time? A significant part of the session will be devoted to mineralogical, petrological and volcanological characterization of kimberlite and carbonatite bodies. The complex mineralogy of these rocks is rooted in complex textures controlled by fragmentation and interaction with the wall rocks. We hope the session will bring together kimberlite and carbonatite scholars and their synergy will enable new insights into the composition and emplacement of primary carbonate-rich melts from the subcratonic mantle.