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TitleInvestigation of ultramafic to mafic komatiitic units within the Raglan Block within the Cape Smith Belt, Nunavik, northern Quebec
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LicencePlease note the adoption of the Open Government Licence - Canada supersedes any previous licences.
AuthorMcKevitt, D J; Houlé, M G; Lesher, C M
SourceTargeted Geoscience Initiative: 2017 report of activities, volume 1; by Rogers, N (ed.); Geological Survey of Canada, Open File 8358, 2018 p. 169-172, 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
NTS35G/09; 35H/11; 35H/12
Lat/Long WENS -74.5000 -73.0000 61.7500 61.5000
Subjectseconomic geology; tectonics; structural geology; mineral deposits; mineral exploration; mineral potential; nickel; chromium; ore mineral genesis; mineralization; ore controls; bedrock geology; lithology; igneous rocks; volcanic rocks; komatiites; basalts; ultramafic rocks; lavas; sheet flows; volcaniclastics; intrusive rocks; gabbros; peridotites; metamorphic rocks; quartzites; metasedimentary rocks; semipelites; sedimentary rocks; ironstone; structural features; faults; faults, thrust; volcanology; intrusions; sills; Cape Smith Belt; Raglan Block; Circum-Superior Large Igneous Province; Superior Province; Povungnituk Group; Chukotat Group; Raglan Formation; Phanerozoic; Paleozoic; Precambrian; Proterozoic
Illustrationsgeoscientific sketch maps
ProgramTargeted Geoscience Initiative (TGI-5) Knowledge Management Coordination
ProgramTargeted Geoscience Initiative (TGI-5) Nickel-copper-PGE-chromium systems
Released2018 01 19
AbstractThe Circum-Superior large igneous province that extends for over than 2500 km along the margin of the Superior Province hosts two of Canada's most important magmatic Ni-Cu-PGE districts: the Thompson (northern Manitoba) and the Raglan (Nunavik, northern Quebec) nickel belts. The vast majority of the Ni-Cu-(PGE) mineralization in the Raglan belt occurs within a series of thick (50-200 m) lava channels and channelized sheet flows facies along the contact between the early Proterozoic Povungnituk and younger Chukotat groups. This geological contact appears to be repeated in the 'Northern Permits' area located north of active mining area, however, although it contains lithologically similar ultramafic-mafic units, it lacks significant mineralization. The overall metal endowment of these two panels is disparate; this research seeks to understand why the metal endowment is significantly different between these two areas.
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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