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TitleUsing hydrogeochemical data to improve remediation of historical gold mine tailings in Nova Scotia
AuthorDeSisto, S L; Parsons, M B; Jamieson, H E
SourceMine Water & Innovative Thinking, International Mine Water Association Symposium; by Wolkersdorfer, C (ed.); Freund, A (ed.); 2010 p. 575-578
LinksOnline - En ligne
Alt SeriesEarth Sciences Sector, Contribution Series 20100206
PublisherCBU Press
MeetingInternational Mine Water Association 2010 Symposium; Sydney, NS; CA; September 5-9, 2010
ProvinceNova Scotia
NTS11E/01; 11D/12
AreaMontague; Goldenville
Lat/Long WENS -62.5000 -62.0000 45.2500 45.0000
Lat/Long WENS -63.5000 -63.5000 44.7500 44.5000
Subjectsenvironmental geology; hydrogeology; geochemistry; tailings; tailings disposal; tailings geochemistry; tailings analyses; scorodite; arsenic; heavy metals contamination; environmental analysis; environmental studies; environmental impacts
Illustrationslocation maps; photomicrographs; tables
ProgramEnvironmental Geoscience, Program management and Transition Activities
AbstractBetween the 1860s and 1940s historical gold mining operations generated over 3,000,000 tonnes of tailings at 64 districts throughout mainland Nova scotia. this study focuses on hydrogeochemical processes controlling the mobility and attenuation of arsenic (As) and lead (Pb) at the Montague and Goldenville districts. results from a previous sampling program at Montague investigating the role of hardpans on As cycling show precipitation and dissolution of scorodite (FeAsO4·2H2O) and amorphous iron (Fe) arsenate dominantly control vadose zone water chemistry. the present study investigates stability of As- and Pb-bearing phases, from the tailings surface to a depth of approximately 2 m.