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Weathering of sulphide-mineralized till at Liikavaara, northern Sweden, and consequences for surface waters in the area
Luleå tekniska universitet.
2003 (English)Licentiate thesis, comprehensive summary (Other academic)
Abstract [en]

The Aitik open-pit mine in northern Sweden is the largest Cu-mine in Europe. Another, smaller ore body, Liikavaara Östra Cu-sulphide deposit, located 4 km east of Aitik, will probably be mined in the near future. The till east of the Liikavaara Östra deposit is in some parts rich in Cu and other sulphide-associated metals. Groundwater flowing in this till has higher concentrations of Cu than groundwater in a reference area where the till has low concentrations of Cu and other metals. To explain the metal enrichment in the groundwater, a detailed study of the till where the highest metal concentrations occur was performed. The importance of local diffusion of Cu-bearing airborne dust from the adjacent Aitik mine tailings impoundment was quantified and solid speciation of metals in airborne material was performed by sequential extraction. The results from Liikavaara were compared to results from the reference area. Glacial ice picked up sulphide-rich material from the Liikavaara Östra Cu ore during its flow. This material was deposited in the till east of the ore body when the ice melted. The sulphides have been dissolved in the

Place, publisher, year, edition, pages
Luleå: Luleå tekniska universitet, 2003. , 15 p.
Licentiate thesis / Luleå University of Technology, ISSN 1402-1757 ; 2003:29
Research subject
Applied Geology
URN: urn:nbn:se:ltu:diva-16917Local ID: 0a9c30c0-bdff-11db-9be7-000ea68e967bOAI: diva2:989906

Godkänd; 2003; 20070216 (ysko)

Available from: 2016-09-29 Created: 2016-09-29 Last updated: 2016-10-19Bibliographically approved

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