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TitleAlteration facies of IOA, IOCG and affiliated deposits: understanding the similarities, recognising the diversity in these ore systems
AuthorCorriveau, LORCID logo; Potter, E GORCID logo; Montreuil, J -F; Blein, O; Ehrig, K; Fabris, A J
SourceGSSA IOCG (Iron Oxide - Copper-Gold Mineral Systems) 2019 Workshop, presentations; 2019 p. 1-77
LinksOnline - En ligne
Alt SeriesNatural Resources Canada, Contribution Series 20190591
PublisherGeological Survey of South Australia
MeetingGSSA Iron Oxide - Copper-Gold Mineral Systems 2019 Workshop; Tonsley, SA; AU; December 2-3, 2019
DocumentWeb site
Mediaon-line; digital
ProvinceNorthwest Territories
NTS86E/16; 86F/13; 86K/04; 86L/01
AreaContact Lake; Balachey Lake; Rainy Lake; Port Radium
Lat/Long WENS-118.5000 -117.5000 66.2500 65.7500
Subjectseconomic geology; Science and Technology; iron formations; iron oxides; iron ores; rare earths; alteration; mineral deposits; chemical analyses; orogenesis; Great Bear Magmatic Zone
Illustrationsphotographs; graphs; plots
ProgramTargeted Geoscience Initiative (TGI-5) Uranium ore systems - deep metasomatic processes
Released2019 12 02
Summary(Plain Language Summary, not published)
This presentation for the 2019 Geological Survey of South Australia IOCG workshop illustrates the evolution of alteration facies within mineral systems that host iron oxide copper-gold (Co-Ag-Bi-REE-U) (IOCG) and affiliated deposits followed by examples of the spectrum of deposit types formed and the commodities (base, precious and critical metals, iron, uranium, thorium, etc.) precipitated as a function of the metasomatic growth of the system, ingress of syn-metasomatic fluids and magmas, and tectonic activity. Iron oxide and alkali-calcic alteration (IOAA) facies are also shown to be metal pathways to ore and to serve as mappable criteria for mineral potential assessment. The case examples used include the Canadian Great Bear magmatic zone, Central Mineral Belt and Romanet Horst in Canada as well as the Cloncurry district and the Olympic Copper-Gold Province in Australia. The research was conducted under the Uranium project of the Targeted Geoscience Initiative program of NRCan.

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