| Title | Minéralisations chromifères et nickélifères associées à la Suite mafique-ultramafique de Caumont dans le secteur de Nemiscau, Eeyou Istchee Baie-James, Québec, Canada |
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| Licence | Please note the adoption of the Open Government Licence - Canada
supersedes any previous licences. |
| Author | Houlé, M G; Bandyayera, D; Bécu, V; Bédard, M -P |
| Source | Geological Survey of Canada, Scientific Presentation 117, 2020, 1 sheet, https://doi.org/10.4095/326939  Open Access |
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| Year | 2020 |
| Publisher | Natural Resources Canada |
| Document | serial |
| Lang. | French |
| Media | on-line; digital |
| File format | pdf |
| Province | Quebec |
| NTS | 32N/08; 32N/09; 32O/05; 32O/11; 32O/12; 32O/13; 32O/14 |
| Area | Eeyou-Istchee Baie-James |
| Lat/Long WENS | -76.4178 -75.2717 51.8133 51.4181 |
| Subjects | economic geology; mineralogy; Science and Technology; Nature and Environment; mineral potential; mineral exploration; mineral deposits; nickel; chromium; chromite; magmatic deposits; stratiform
deposits; sulphide deposits; ore mineral genesis; mineralization; ore controls; bedrock geology; lithology; igneous rocks; ultramafic rocks; volcanic rocks; mafic volcanic rocks; volcano-sedimentary strata; intrusive rocks; peridotites; dunites;
pyroxenites; gabbros; tectonic setting; host rocks; intrusions; x-ray diffraction analyses; Archean; Suite Intrusive de Caumont; Superior Province; Sous-Province Nemiscau; Sous-Province La Grande; Intrusion du Lac des Montagnes; Groupe du Lac des
Montagnes; Intrusion de Caumont; Intrusion de Levack; Gisement de Mountain Lake; Gisement de Nisk; platinum group elements; Precambrian |
| Illustrations | location maps; geoscientific sketch maps; lithologic sections; photographs; tables |
| Program | Targeted Geoscience Initiative (TGI-5) Nickel-copper-PGE-chromium systems |
| Released | 2020 09 18 |
| Summary | (Plain Language Summary, not published)
Mafic and ultramafic rocks are ubiquitous in the Eeyou Istchee James Bay territory, although their abundance is extremely variable from one area to
another. These are relatively common in the Nemiscau area and are interpreted as part of Caumont's mafic and ultramafic intrusive suite. These units in this suite consist of a series of mafic and ultramafic intrusions oriented ENE-WSW within the
volcano-sedimentary sequence of the Lac des Montagnes Group along the contact between the Nemiscau subprovince, to the south, and the La Grande, to the north, of the Superior Province. Ongoing work aims to better characterize the ultramafic to mafic
intrusions of the Caumont Suite in order to constrain their petrological and geochemical affinities as well as the association between chromiferous and nickeliferous mineralizations observed in many of these intrusions. This new geological
information will be critical in a comparative study of the Caumont suite with other intrusions in the Superior Province such as those present in the Ring of Fire area in northern Ontario. |
| GEOSCAN ID | 326939 |
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