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TitreDataset of geochemical data from iron oxide alkali-altered mineralising systems of the Great Bear magmatic zone, Northwest Territories
TéléchargerTéléchargements
AuteurCorriveau, L; Lauzière, K; Montreuil, J -F; Potter, E G; Hanes, R; Prémont, S
SourceCommission géologique du Canada, Dossier public 7643, 2015, 24 pages, https://doi.org/10.4095/296301
Année2015
ÉditeurRessources naturelles Canada
Documentdossier public
Lang.anglais
DOIhttps://doi.org/10.4095/296301
Medianumérique; en ligne
Liensreadme
Formatspdf; xlsx; rtf
ProvinceTerritoires du Nord-Ouest
SNRC85M; 85N; 85O; 86A; 86B; 86C; 86D; 86E; 86F; 86G; 86J; 86K; 86L
Lat/Long OENS-120.0000 -116.0000 67.0000 63.0000
Sujetsgîtes minéralogiques; gisements minéraux; oxydes de fer; cuivre; or; uranium; minéralisation; uraninite; interprétations géochimiques; analyses géochimiques; méthodes analytiques; analyses des roches totales; géochimie des roches totales; Zone de Great Bear Magmatic ; Craton de Slave ; géologie économique; géochimie; Phanérozoïque
Illustrationslocation maps; tables; plots
ProgrammeGestion de programme du corridor de Mackenzie, GEM2 : La géocartographie de l'énergie et des minéraux
Diffusé2015 06 18
Résumé(disponible en anglais seulement)
The Great Bear magmatic zone is a Paleoproterozoic calc-alkaline to shoshonitic volcano-plutonic belt in the Northwest Territories of Canada. The region hosts regional-scale iron oxide and alkali-alteration mineral systems with polymetallic iron oxide copper-gold (IOCG) deposits and prospects as well as iron oxide±apatite, skarn and albitite-hosted uranium mineralisation. In the course of phase-three Targeted Geoscience Mapping program and phase-one Geo-mapping for Energy and Minerals program as well as in 1973 for the Bear Province lithogeochemical survey project, a total of 1720 samples were collected across these iron oxide alkali alteration systems between 2005 and 2012 and their chemical composition analysed by complementary methods. In this Open File, we report over 3500 lithogeochemical analyses (including analyses from distinct laboratories, duplicates and standards). In these samples, metals above the NORMIN cut-off grades for mineral showings include base, precious, strategic and specialised metals including rare-earth elements as well as uranium and thorium. The format chosen for the data set is tailored for geographic information systems (GIS); all samples are georeferenced and as such the data set locates all the anomalous metal concentrations encountered during the aforementioned projects. Metadata is being provided on the sampling protocols, the analytical methods, and the quality control results. This complete data set of analyses is also being published to serve as an electronic supplement to current and future scientific publications associated with these projects as well as a support for a subsequent open file where the best results per elements will be compiled. As such, this dataset provides the documentation for the commonalities observed in the chemical fingerprints of each hydrothermal alteration facies across the varied systems and anchor the refined lithogeochemical exploration methods developed for IOCG and affiliated deposits. In addition, the dataset can be used as baseline knowledge for the natural geological environment of the belt that guides the natural metal distribution in glacial sediments, soils, water and biomass.
Résumé(Résumé en langage clair et simple, non publié)
Cet ensemble de données géochimiques constituent une compilation de nouveaux résultats géochimiques provenant de divers laboratoires dont ACME, ALS laboratoires, Becquerel et les laboratoires INRS. La géochimie a été effectuée pour caractériser la minéralisation de type cuivre-or de l'oxyde de fer (IOCG) et les multiples minéralisations avec divers type de métaux associés dans des zones sélectionnées de la zone magmatique de Great Bear, Territoires du Nord-Ouest. La zone se situe en grande partie dans la région administrative de Wek'eezhii, atteignant la région des Sahtu et la limite des terres privées Tliçho. La compilation de cette base de données a été réalisée dans le cadre du projet IOCG Grande Ourse de la géocartographie de l'énergie et des minéraux (GEM).
GEOSCAN ID296301