Effects of acid-sulfate weathering and cyanide-containing gold tailings on the transport and fate of mercury and other metals in Gossan Creek: Murray Brook mine, New Brunswick, Canada

Gossan Creek, a headwater stream in the SE Upsalquitch River watershed in New Brunswick, Canada, contains elevated concentrations of total Hg (Hg T up to 60 μg/L). Aqueous geochemical investigations of the shallow groundwater at the headwaters of the creek confirm that the source of Hg is a contamin...

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Bibliographic Details
Published in:Applied geochemistry 2006-11, Vol.21 (11), p.1969-1985
Main Authors: Al, Tom A., Leybourne, Matthew I., Maprani, Antu C., MacQuarrie, Kerry T., Dalziel, John A., Fox, Don, Yeats, Phillip A.
Format: Article
Language:English
Subjects:
Freshwater
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Summary:Gossan Creek, a headwater stream in the SE Upsalquitch River watershed in New Brunswick, Canada, contains elevated concentrations of total Hg (Hg T up to 60 μg/L). Aqueous geochemical investigations of the shallow groundwater at the headwaters of the creek confirm that the source of Hg is a contaminated groundwater plume (neutral pH with Hg and Cl concentrations up to 150 μg/L and 20 mg/L, respectively), originating from the Murray Brook mine tailings, that discharges at the headwaters of the creek. The discharge area of the contaminant plume was partially delineated based on elevated pH and Cl concentrations in the groundwater. The local groundwater outside of the plume contains much lower concentrations of Hg and Cl (
ISSN:0883-2927
1872-9134
DOI:10.1016/j.apgeochem.2006.08.013