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TitleGeoenvironmental characteristics of Canadian critical metal deposits / Caractéristiques géoenvironnementales de gisements métalliques critiques au Canada
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AuthorParsons, M
SourcePublic presentations of May 8th, 2018: Environmental Geoscience Program, current status of research projects, May 2018; by Jacob, N; Kao, H; Galloway, J; Parsons, M; White, D; Larmagnat, S; Rivard, C; Gammon, P; Savard, M M; Geological Survey of Canada, Scientific Presentation 88, 2018 p. 35-58, https://doi.org/10.4095/308296 (Open Access)
Year2018
PublisherNatural Resources Canada
Documentserial
Lang.English
Mediaon-line; digital
RelatedThis publication is contained in Jacob, N; Kao, H; Galloway, J; Parsons, M; White, D; Larmagnat, S; Rivard, C; Gammon, P; Savard, M M; (2018). Public presentations of May 8th, 2018: Environmental Geoscience Program, current status of research projects, May 2018, Geological Survey of Canada, Scientific Presentation no. 88
File formatpdf
ProvinceQuebec
NTS31G/08
AreaOka
Lat/Long WENS -74.5000 -74.0000 45.5000 45.2500
Subjectsenvironmental geology; economic geology; geochemistry; mineralogy; hydrogeology; environmental studies; environmental impacts; mineral deposits; metals; pyrochlore; antimony; cobalt; indium; lithium; niobium; rare earths; mining; tailings; mine waste products; smelting; trace element geochemistry; fluorides; radionuclides; uranium; thorium; groundwater; surface waters; water quality; water quality analyses; radon; bedrock geology; lithology; carbonatites; drainage systems; weathering; precipitates; sovites; apatite; carbonates; leaching; pore water samples; slag; limnology; geophysical logging; temperature; conductivity; oxygen; St. Lawrence Columbium Mine; rare earth elements (REE); element mobility; environmental risks; environmental hazards; health hazards; environmental management; decision making; mineralogical signatures; mine pit lakes; pH; element concentrations
Illustrationsphotographs; aerial photographs; photomicrographs; spectra; profiles; graphs
ProgramManagement, Environmental Geoscience
Released2018 06 27; 2018 07 04
AbstractIn recent years, there has been a rapid increase in the global demand for many elements used in green energy and high-tech applications, including antimony (Sb), cobalt (Co), indium (In), lithium (Li), niobium (Nb) and the rare earth elements (REE). Canada has abundant resources of these critical elements, however, we know very little about the potential environmental impacts of mining these resources. The primary objective of this study is 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 Nb producers in the world.
In FY 17-18, GSC scientists continued sampling mine wastes, groundwater and surface waters at the SLC Mine and initiated collaborative projects with the University of Ottawa (slag leaching) and Queen's University (waste rock weathering). Results to-date show that most REEs, uranium (U) and thorium (Th) occur in relatively insoluble minerals, but that the slag is reactive and a potential radiological hazard. Radionuclide levels in mine waters are very low, but elevated levels of fluoride are present in seepage from the tailings. GSC data on slag, groundwater, and pit lake chemistry were shared with the Quebec Ministry of Energy and Natural Resources to help inform ongoing environmental management decisions for the SLC Mine. Results were also shared in a plain language fact sheet, and in both national and international conference presentations.
GEOSCAN ID308296