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TitleLithological, hydrothermal, structural and metamorphic controls on the style, geometry and distribution of the auriferous zones at Amaruq, Churchill Province, Nunavut
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AuthorValette, M; De Souza, S; Mercier-Langevin, P; McNicoll, V J; Grondin-LeBlanc, P; Côté-Mantha, O; Simard, M; Malo, M
SourceTargeted Geoscience Initiative: 2017 report of activities, volume 1; by Rogers, N (ed.); Geological Survey of Canada, Open File 8358, 2018 p. 153-156, (Open Access)
PublisherNatural Resources Canada
Documentopen file
Mediaon-line; digital
RelatedThis publication is contained in Rogers, N; (2018). Targeted Geoscience Initiative: 2017 report of activities, volume 1, Geological Survey of Canada, Open File 8358
File formatpdf
NTS45M; 46D; 46E; 46L; 46M; 47D; 55; 56; 57A; 57B; 65; 66A; 66B; 66C; 66F; 66G; 66H; 66I; 66J; 66K; 66N; 66O; 66P; 67A
AreaMeliadine District
Lat/Long WENS-104.0000 -86.0000 68.5000 60.0000
Subjectseconomic geology; tectonics; structural geology; geochemistry; mineral deposits; mineral exploration; mineral potential; gold; ore mineral genesis; mineralization; ore controls; structural controls; replacement deposits; strata-bound deposits; geometric analyses; tectonic setting; hydrothermal systems; metamorphism; deformation; cleavage; schistosity; crenulations; alteration; intrusions; veins; bedrock geology; structural features; shear zones; structural traps; faults; folds; lithology; igneous rocks; intrusive rocks; carbonates; quartz; volcanic rocks; volcano-sedimentary strata; sedimentary rocks; iron formations; cherts; silicates; ultramafic rocks; mafic rocks; pyrrhotite; arsenopyrite; loellingite; x-ray fluorescence analyses; Archean; Canadian Shield; Churchill Province; Amaruq Deposit; Woodburn Lake Group; Woodburn Lake Greenstone Belt; Rae Domain; Hearne Domain; Paleoproterozoic; ore systems approach; banded iron-formation-hosted gold deposits; geochemical traps; geochemical signatures; silica flooding; Precambrian; Proterozoic
Illustrationsgeoscientific sketch maps; photographs
ProgramKnowledge Management Coordination, Targeted Geoscience Initiative (TGI-5)
ProgramGold systems, Targeted Geoscience Initiative (TGI-5)
Released2018 01 19
AbstractThe Amaruq gold project is part of the Woodburn Lake group of the Rae Domain, in the western Churchill Province. Exploration for BIF-hosted gold deposits in this region has led to an emerging gold district, which comprises the Meliadine, Meadowbank and Amaruq deposits. In the Amaruq area, the Woodburn Lake group comprises a 250 m thick Neoarchean volcano-sedimentary sequence intercalated with chert and silicate facies iron formations. The two main ore zones (i.e. Whale Tail and IVR) exhibit different ore and alterations styles related to distinct geochemical and structural traps. The Whale Tail zone is primarily characterized by stratabound pyrrhotite-arsenopyrite-loellingite-gold replacement type mineralization in chert and iron formation. The ore zones at IVR consist of gold-bearing quartz-carbonate veins developed at, or near contacts between favourable units or reverse fold fault zones. In both ore zones, the geometry and style of the ore are controlled by at least the two Paleoproterozoic phases of deformation, and crosscutting relationships between folded sedimentary rocks and quartz-carbonate veins indicate protracted hydrothermal activity.