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TitleStructural and lithologic controls on the nature and distribution of gold in the BIF-associated 1150 and 1250 lode series at Tiriganiaq, Meliadine district, Rankin Inlet greenstone belt, Nunavut
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AuthorSt. Pierre, B; Mercier-Langevin, P; Simard, M; Côté-Mantha, O; Malo, M; Servelle, G
SourceTargeted Geoscience Initiative: 2017 report of activities, volume 1; by Rogers, N (ed.); Geological Survey of Canada, Open File 8358, 2018 p. 157-161, (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; Rankin Inlet
Lat/Long WENS-104.0000 -86.0000 68.5000 60.0000
Subjectseconomic geology; tectonics; structural geology; mineral deposits; mineral exploration; mineral potential; gold; replacement deposits; strata-bound deposits; ore mineral genesis; mineralization; ore controls; structural controls; bedrock geology; lithology; sedimentary rocks; iron formations; igneous rocks; volcanic rocks; volcaniclastics; intrusive rocks; gabbros; tonalites; granites; greenstone belts; metamorphic rocks; quartzites; structural features; faults; folds; shear zones; structural analyses; trend surface analysis; tectonic evolution; tectonic setting; metamorphism; deformation; foliation; intrusions; veins; quartz; carbonate; geometric analyses; kinematic analysis; modelling; metallogeny; cataclasites; lithostratigraphy; Archean; Canadian Shield; Western Churchill Province; Hearne Domain; Rae Domain; Meliadine gold project; Tiriganiaq Deposit; Lower Fault; Pyke Fault; Upper Oxide Formation; Normeg Deposit; Wesmeg Deposit; Tiriganiaq Formation; Sam Formation; Wesmeg Formation; Paleoproterozoic; ore systems approach; banded iron-formation-hosted gold deposits; Precambrian; Proterozoic
Illustrationslocation maps; geoscientific sketch maps; schematic cross-sections; photographs; schematic representations
ProgramTargeted Geoscience Initiative (TGI-5), Knowledge Management Coordination
ProgramTargeted Geoscience Initiative (TGI-5), Gold systems
Released2018 01 19
AbstractThe Meliadine gold project is located within the Rankin Inlet greenstone belt, Nunavut; one of Canada's largest emerging gold districts. A large part of the 1000 and 1100 ore zones or 'lodes' at the Tiriganiaq mine are closely associated with the moderately to steeply north-dipping Lower fault and are characterized by decimetre to metre wide laminated, fault-fill veins and associated deformed extensional veins. Other ore zones such as the 1150 and 1250 lodes, north of the 1000 and 1100 lodes, appear to have a more complex geometry. Preliminary research indicates that the main controls on gold distribution within the 1150 lode series are Lower fault parallel, narrow north-dipping reverse shears that overprint the slightly steeper, north-dipping main foliation and associated axial planar tight folds. Shallowly south-dipping extension veins associated with the shear zones and related fault-fill veins are preferentially developed in tightly folded decimetre to metre thick BIF layers around the moderately north-dipping reverse shears.