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TitreA synthesis of the TGI-4 Canadian nickel-copper-platinum group elements-chromium ore systems project -- revised and new genetic models and exploration tools for Ni-Cu-PGE, Cr-(PGE), Fe-Ti-V-(P), and PGE-Cu deposits
TéléchargerTéléchargement (publication entière)
AuteurAmes, D E; Houlé, M G
SourceTargeted Geoscience Initiative 4: Canadian nickel-copper-platinum group elements-chromium ore systems -- fertility, pathfinders, new and revised models; par Ames, D E (éd.); Houlé, M G (éd.); Commission géologique du Canada, Dossier public 7856, 2015 p. 1-15, https://doi.org/10.4095/296675
Année2015
ÉditeurRessources naturelles Canada
Documentdossier public
Lang.anglais
DOIhttps://doi.org/10.4095/296675
Mediaen ligne; numérique
Référence reliéeCette publication est contenue dans Ames, D E; Houlé, M G; (2015). Targeted Geoscience Initiative 4: Canadian nickel-copper-platinum group elements-chromium ore systems -- fertility, pathfinders, new and revised models, Commission géologique du Canada, Dossier public 7856
Formatspdf
ProvinceColombie-Britannique; Manitoba; Ontario; Québec; Terre-Neuve-et-Labrador
SNRC14C; 14D; 23; 33; 32; 41I; 42; 52; 43C; 92H; 104I
Lat/Long OENS -96.0000 -60.0000 58.0000 46.0000
Lat/Long OENS-122.0000 -120.0000 50.0000 49.0000
Lat/Long OENS-130.0000 -128.0000 59.0000 58.0000
Sujetsétablissement de modèles; nickel; platine; chrome; genèse des minerais; métallogénie; Ceinture de Bird River Greenstone ; Ceinture d'Abitibi Greenstone ; Province de Nain ; Province de Superior ; Complexe de Sudbury Igneous ; minéraux métalliques; pétrologie ignée et métamorphique
ProgrammeÉtude des gîtes magmatiques de Ni-Cu-EPG, Initiative géoscientifique ciblée (IGC-4)
Diffusé2015 06 22
Résumé(disponible en anglais seulement)
The Canadian Ni-Cu-PGE-Cr ore systems project, under the fourth phase of the Targeted Geoscience Initiative (TGI-4), spanned a breadth of ore deposit types, tectonic environments (crustal boundaries, suprasubduction zones, astrobleme, intracratonic rift), and processes of formation (magmatic to hydrothermal). This report summarizes key project activities for six mineral districts completed by a collaborative group of more than fifty contributors from the GSC, four provincial geological surveys, academia, and industry to develop and refine genetic models and exploration techniques to determine fertility and pathfinders.
Sixty-six new age determinations provide important geochronological constraints to build and refine models for many Cr-(PGE), Ni-Cu-PGE, Cu-PGE, and Fe-Ti-V-(P) prospective and fertile regions. These include Ni-Cu-PGE in convergent-margin settings, Cr in the Bird River and McFaulds Lake ("Ring of Fire") greenstone belts, Cr in La Grande Rivière-Eastmain domains, Cu-PGE in Midcontinent Rift, and Ni-Cu-PGE in the enormous Sudbury mining district.
New exploration techniques to detect fertility using advanced mineral chemical microanalytical techniques and discriminant diagrams were developed for oxide phases (chromite, magnetite) in barren and fertile intrusions through examination of Canada's districts (Sudbury Igneous Complex, Ontario; Voisey's Bay, Labrador and Newfoundland) and Archean komatiite (Alexo, Abitibi). The first in situ determination of actual ore-metal concentrations from an early trapped melt hosting a major mining district was completed. Various new indicator minerals and assemblages, such as apatite, biotite, and epidote-amphibole-titanite assemblages, were identified with distinctive chemistry to aid in vectoring towards buried Ni-Cu-PGE and Cu-PGE mineralization.
GEOSCAN ID296675