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Secondary copper enrichment in tailings at the Laver mine, northern Sweden
Luleå tekniska universitet.
Luleå tekniska universitet.
Analytica AB.
Luleå tekniska universitet, Institutionen för samhällsbyggnad och naturresurser, Geovetenskap och miljöteknik.
1999 (engelsk)Inngår i: Environmental Geology, ISSN 0943-0105, E-ISSN 1432-0495, Vol. 38, nr 4, s. 327-342Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

Field and laboratory studies of the sulphide-bearing tailings at Laver, northern Sweden, show that the present release of metals from the tailings is low, especially with regard to Cu. A large part of the Cu released by sulphide oxidation is enriched in a distinct zone just below the oxidation front. The enrichment zone occurs almost all over the tailings area except in areas with a shallow groundwater table. The Cu enrichment is caused by formation of covellite and adsorption onto mineral surfaces. The transport of Zn, Co, Cd, Ni and S seems to be controlled mainly by adsorption. No secondary zone or secondary minerals containing these metals have been found. Just below the groundwater table, metals are released into solution when the enrichment zone reaches the groundwater due to the low pH. An increased release of metals, especially Cu, can be expected in the future, since the enrichment zone is moving towards the groundwater table.

sted, utgiver, år, opplag, sider
1999. Vol. 38, nr 4, s. 327-342
HSV kategori
Forskningsprogram
Tillämpad geologi
Identifikatorer
URN: urn:nbn:se:ltu:diva-9749DOI: 10.1007/s002540050430Lokal ID: 86b64140-a16d-11db-8975-000ea68e967bOAI: oai:DiVA.org:ltu-9749DiVA, id: diva2:982687
Merknad
Godkänd; 1999; 20070111 (bajo)Tilgjengelig fra: 2016-09-29 Laget: 2016-09-29 Sist oppdatert: 2017-11-24bibliografisk kontrollert

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