| Titre | Overview of Ni-Cu-(PGE), Cr-(PGE), and Fe-Ti-V magmatic mineralization in the Superior Province: insights on metallotects and metal endowment |
| Télécharger | Téléchargements |
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| Licence | Veuillez noter que la Licence du gouvernement
ouvert - Canada remplace toutes les licences antérieures. |
| Auteur | Houlé, M G; Lesher, C M; Sappin, A -A ; Bédard, M -P; Goutier, J; Yang, X -M |
| Source | Targeted Geoscience Initiative 5: Advances in the understanding of Canadian Ni-Cu-PGE and Cr ore systems - Examples from the Midcontinent Rift, the Circum-Superior Belt, the Archean Superior Province, and
Cordilleran Alaskan-type intrusions; par Bleeker, W (éd.);
Houlé, M G (éd.); Commission géologique du Canada, Dossier public 8722, 2020 p. 117-139, https://doi.org/10.4095/326890  Accès ouvert |
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| Année | 2020 |
| Éditeur | Ressources naturelles Canada |
| Document | dossier public |
| Lang. | anglais |
| DOI | https://doi.org/10.4095/326890 |
| Media | en ligne; numérique |
| Référence reliée | Cette publication est contenue dans Targeted
Geoscience Initiative 5: Advances in the understanding of Canadian Ni-Cu-PGE and Cr ore systems - Examples from the Midcontinent Rift, the Circum-Superior Belt, the Archean Superior Province, and Cordilleran Alaskan-type intrusions |
| Formats | pdf |
| Province | Manitoba; Terre-Neuve-et-Labrador; Ontario; Québec |
| SNRC | 21E; 21L; 21M; 22E; 22L; 22M; 22D; 23D; 23E; 23L; 31; 32; 33; 41; 42; 43; 52; 53; 62I; 62J; 63A; 63B; 63G; 63H; 63I; 63J; 62O; 62P |
| Région | Labrador |
| Lat/Long OENS | -100.0000 -70.0000 55.0000 45.0000 |
| Sujets | gisements minéraux; métaux; métaux de base; métaux précieux; nickel; cuivre; chrome; fer; titane; vanadium; gîtes magmatiques; gîtes sulfureux; genèse des minerais; minéralisation; contrôles des minerais;
établissement de modèles; métallotectes; métallogénie; géologie du substratum rocheux; lithologie; roches ignées; roches mafiques; roches ultramafiques; roches volcaniques; basaltes; roches intrusives; komatiites; cadre tectonique; antécédents
tectoniques; ceintures de roche verte; magmatisme; volcanisme; intrusions; mise en place; regimes d'écoulement; manteau terrestre; érosion; déformation; dynamique des fluides; soufre; oxydes; Archéen; Province de Superior ; Ceinture d'Abitibi
Greenstone ; éléments du groupe de platine; géologie économique; tectonique; Sciences et technologie; Nature et environnement; Précambrien |
| Illustrations | cartes de localisation; histogrammes; graphiques; tableaux |
| Programme | Initiative géoscientifique ciblée (IGC-5) Systèmes de nickel-cuivre-EGP-chrome |
| Diffusé | 2020 09 08; 2023 03 17 |
| Résumé | (disponible en anglais seulement)
The Archean Superior Province is well known for its metal endowment. Ultramafic and mafic intrusions/flows are ubiquitous in greenstone belts across the
Superior Province and are prospective hosts for magmatic Ni-Cu-(PGE), Cr-(PGE), and Fe-Ti-V deposits, although their abundance and endowment vary widely among the terranes/domains. For example, the Abitibi-Wawa terrane contains numerous but generally
small Ni-Cu-(PGE) deposits, a few large Fe-Ti-V deposits, and only rare Cr mineralization. The Bird River-Uchi-Oxford-Stull-La Grande Riviere-Eastmain (BUOGE “superdomain”) domains are characterized by several moderate to very large chromite
deposits, a few moderate to small Ni-Cu-(PGE) deposits, and a few potentially large Fe-Ti-V deposits that are characterized as prospects due to the lack of definition drilling. The other terranes/domains in the Superior Province, including the Au and
Cu-Zn-Aurich Abitibi belt, contain some magmatic Ni-Cu-(PGE) and Fe-Ti-V mineralization, but no significant Cr- (PGE) mineralization. Many factors are responsible for the variable metal endowment, but some critical features appear to be particularly
important and may define prospective Ni-Cu-(PGE), Cr-(PGE), and/or Fe-Ti- V metallotects. These include the presence of (1) abundant primitive mantle-derived magmas that were generated by large magmatic events over short durations; (2) magma
compositions that favoured the generation of Ni-Cu-(PGE) (high-Mg komatiitic), Cr (low-Mg komatiitic), and Cu-Ni-PGE and Fe-Ti-V (basaltic) mineralization; (3) transcrustal discontinuities that focussed magma flow through the lower crust; (4) shallow
structures and densities that favoured emplacement of channelized lava/magma conduits at relatively high levels, (5) high magma fluxes to promote thermomechanical erosion of crustal rocks; (6) high-level crustal rocks containing sulphur (e.g.
sulphide-facies iron formation) and oxide (e.g. oxide-facies iron formation) reservoirs for generating and upgrading sulphide xenomelts and oxide xenocrysts; and (7) favourable deformation and erosion to preserve and expose prospective units for
exploration. Targeting base and precious metals is challenging, even in well endowed but partially exposed greenstone belts. However, understanding these fundamental controls will help in the discover of additional resources in other frontier areas
within the Superior Province and throughout the Canadian Shield. |
| Sommaire | (Résumé en langage clair et simple, non publié)
Les principaux objectifs de la phase 5 (2015-2020) du programme de l'Initiative géoscientifique ciblée (IGC) de Ressources naturelles Canada et
de la Commission géologique du Canada étaient de générer de nouvelles connaissances, méthodologies et modèles afin d'améliorer la capacité de l'industrie de l'exploration à détecter les gisements de minerai enfouis et les extensions des systèmes de
minerai existants, et de fournir des modèles pour cibler de nouvelles zones de gisement. Ce volume synthèse contient neuf articles individuels qui traitent des principales caractéristiques des gisements magmatiques, de l'échelle du dépôt à celui du
système magmatique, à partir de divers exemples canadiens reliés au projet Ni-Cu-PGE-Cr de l'IGC-5. |
| GEOSCAN ID | 326890 |
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