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TitleSagar Property, Romanet Horst, Labrador Trough, Quebec, Canada : Potential for Iron-Oxide-Copper-Gold-type (IOCG) deposits?
AuthorRufiange, E; Nadeau, O; Corriveau, LORCID logo; Montreuil, J F
SourceGeological Association of Canada, Program and Abstracts vol. 39, 2016 p. 80 Open Access logo Open Access
LinksOnline - En ligne
Alt SeriesEarth Sciences Sector, Contribution Series 20150428
PublisherGeological Association of Canada
MeetingGAC-MAC 2016; Whitehorse, Yukon; CA; June 1-3, 2016
File formatpdf
Subjectseconomic geology; general geology; geochemistry; base metals; silver; gold; copper; hydrothermal alteration; iron oxides; mineral exploration; hematite; magnetite; trace element analyses; Labrador Trough; Romanet Horst; Sagar Property
ProgramTargeted Geoscience Initiative (TGI-4), Uranium Ore Systems
AbstractThe Labrador Trough has been explored for natural resources since over a century and the 40 x 12 km Romanet Horst is one of twelve lithotectonic zones of the Trough which has been explored for precious and base metals such as gold, silver and copper for over 50 years. Recent geological work pursued on the Sagar property by Honey Badger Exploration Inc., Energizer Resources Inc., the Geological Survey of Canada and a research group from the University of Ottawa has shed light on the variety of hydrothermal alteration types and their metal associations, strongly suggesting the existence of iron oxide copper gold-type (IOCG-type) mineralization. Could geochemical characterization of iron alteration fingerprints the mineralization types to vector exploration? What is the source of the fluids and metals? To answer these questions, hematite and magnetite from a diversity of lithologies are being characterized using field relations, petrographic observations and chemical analyses. Iron oxides are analyzed for major, minor and trace elements using electron microprobe and laser ablation ICP-MS techniques. These results, combined with existing data and compared to that of other IOCG-type deposits, should help improved the understanding of the realm of mineralization types within the Horst. Longer term research may confirm (or infirm) that alteration and mineralization occurred between 1870 and 1820 Ma, and that ore fluid originated from the subduction zone associated to the De Pas Batholith.
Summary(Plain Language Summary, not published)
The Labrador Trough has been explored for natural resources since over a century and one of its most promising target is the 40 x 12 km Romanet Horst. Collaborative research initially undertaken through a GEM2 task-sharing agreement with Honey Badger Exploration Inc. and Energizer Resources Inc. is now being pursued by the University of Ottawa under a collection-sharing agreement with NRCan for TGI5 to shed light on the variety of iron oxide alteration-related deposit types that can potentially formed across carbonate-rich sedimentary basins (i.e., the Horst) including IOCG type deposits. This abstract sets the stage for on-going research on iron oxide composition as a vector to ore whereas longer term research aims to understand the source of fluids and metals for the uranium bearing polymetallic mineralization such as those of the Horst.

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