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TitreGeoenvironmental characteristics of gold and critical metal deposits / Caractéristiques géo-environnementales de l'activité aurifère et des dépôts de métaux critiques
TéléchargerTéléchargement (publication entière)
AuteurParsons, M
SourcePublic presentations of May 21st, 2019: Environmental Geoscience Program, current status of research projects (phase 2014-2019); par Jacob, N; Parsons, M; Rivard, C; Savard, M M; Larmagnat, S; Outridge, P M; White, D; Kao, H; Lintern, G; Commission géologique du Canada, Présentation scientifique 104, 2019 p. 5-18, https://doi.org/10.4095/314918 (Accès ouvert)
Année2019
ÉditeurRessources naturelles Canada
Documentpublication en série
Lang.anglais; français
DOIhttps://doi.org/10.4095/314918
Mediaen ligne; numérique
Référence reliéeCette publication est contenue dans Jacob, N; Parsons, M; Rivard, C; Savard, M M; Larmagnat, S; Outridge, P M; White, D; Kao, H; Lintern, G; (2019). Public presentations of May 21st, 2019: Environmental Geoscience Program, current status of research projects (phase 2014-2019), Commission géologique du Canada, Présentation scientifique no. 104
Formatspdf (Adobe® Reader®)
ProvinceQuébec; Territoires du Nord-Ouest
SNRC31G/08; 75L; 75M; 76D; 85I; 85J; 85O; 85P; 86A; 86B
Lat/Long OENS -74.5000 -74.0000 45.5000 45.2500
Lat/Long OENS-116.0000 -110.0000 65.0000 62.0000
Sujetsetudes de l'environnement; effets sur l'environnement; exploitation minière; résidus miniers; résidus; scorie; gisements minéraux; métaux; or; niobium; carbonatites; limnologie; géochimie des éléments en trace; radionucléïdes; micropaléontologie; climat; mécanismes de transport; substances polluantes; géochimie de l'arsenic; géochimie des sediments lacustres; eaux de surface; géochimie de l'eau; géochimie du carbone; pergélisol; glace fossile; terres humides; géochimie du thorium; géochimie de l'uranium; établissement de modèles; évaluation environnementale; eaux usées; prise de décision; réglementation; Autochtones; culture autochtone; études de base environnementale; effets cumulatifs; changement climatique; géologie de l'environnement; géochimie; minéralogie; paléontologie; géologie des dépôts meubles/géomorphologie; géologie économique; Nature et environnement; Sciences et technologie; Gouvernement et vie politique; Économie et industrie
Illustrationsphotographs; satellite images; profiles; plots; location maps; geoscientific sketch maps; schematic representations; photomicrographs
ProgrammeGéosciences environnementales, Gestion du programme
Diffusé2019 10 10
Résumé(disponible en anglais seulement)
The Critical Metals Activity used detailed geochemical, mineralogical, and limnological methods to characterize processes controlling the mobility of trace elements and radionuclides in mine wastes and waters at the abandoned St. Lawrence Columbium (SLC) Mine in Oka, Quebec. This mine operated from 1961 to 1976 and at the time was one of the largest niobium (Nb) producers in the world. Geologically, the SLC Mine is very similar to several other carbonatite-hosted mineral deposits across Canada that are being considered for mining of elements used in green energy and high-tech applications, including Nb and rare earth elements (REE). These studies have generated new geoscience knowledge on the potential environmental impacts of mining critical metals and have been used by the Québec Ministère de l'Energie et des Ressources Naturelles (MERN) to help guide remediation decisions for the SLC Mine site. The results will also help industry and regulators to improve environmental predictions for future Nb- and REE-mining projects and to support the development of new environmental guidelines.
The Northern Baselines (Geoscience Tools for Environmental Assessment of Metal Mining) Activity used a multidisciplinary geochemical, paleolimnological, micropaleontological, and traditional knowledge approach to produce new geoscience knowledge on baseline geochemistry and cumulative impacts of geogenic and anthropogenic processes, particularly climate variability, on the transport and fate of metal(loid)s in mineralized regions of northern Canada. New geoscience knowledge on the role of climate variability on speciation of arsenic in porewater and sediments, and the seasonal cycling of metalloids between surface waters and sediments has implications for Environmental Assessment, remediation of contaminated sites, including Crown lands, and new development. The activity also generated new knowledge on the impacts of 21st century climate change on long-term carbon dynamics in permafrost wetlands, important for understanding feedback mechanisms and global carbon cycling.
GEOSCAN ID314918