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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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LicencePlease note the adoption of the Open Government Licence - Canada supersedes any previous licences.
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 logo Open Access
PublisherNatural Resources Canada
Documentopen file
Mediaon-line; digital
RelatedThis publication is contained in Targeted Geoscience Initiative: 2017 report of activities, volume 1
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; 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.
Summary(Plain Language Summary, not published)
The Targeted Geoscience Initiative (TGI) is directed towards providing next generation knowledge and methods to facilitate more effective targeting of buried mineral deposits. The program aims to enhance the effectiveness of exploration for Canada¿s major mineral systems by resolving foundational geoscience problems that constrain the geological processes responsible for the liberation metals from their source region, transportation of these ore metals and control their eventual deposition. TGI supports projects on gold, Ni-Cr-PGE, porphyry-style mineralization, uranium and volcanic- and sedimentary-hosted base metal mineralization ore systems, with each project divided into subprojects focused on resolving specific knowledge gaps by integrating data and studies from multiple sites across Canada. Herein, we present interim results and interpretations from a selection of the research activities currently being conducted under the auspices of TGI.

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