Natural heavy-metal release by sulphide oxidation in the High Arctic
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Natural heavy-metal release by sulphide oxidation in the High Arctic. / Elberling, Bo; Langdahl, Bjarne Riis.
In: Canadian Geotechnical Journal, Vol. 35, No. 5, 1998, p. 895-901.Research output: Contribution to journal › Journal article › Research › peer-review
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TY - JOUR
T1 - Natural heavy-metal release by sulphide oxidation in the High Arctic
AU - Elberling, Bo
AU - Langdahl, Bjarne Riis
PY - 1998
Y1 - 1998
N2 - An assessment of the environmental impact of the weathering of sulphide-rich rocks at Citronen Fjord, North Greenland, provided information on sulphide oxidation rates and metal release from outcrops of sediment-hosted, stratiform ore that may be mined for its zinc content. In situ oxygen uptake rates were measured at the surface of partly weathered sulphide-rich outcrops and compared with metal contents in streams and soil water. The oxygen uptake rates measured during August 1996 were of the same order of magnitude as those reported from mine tailings at lower latitudes. The variation in metal concentrations and pH of the drainage waters reflects the spatial variation in sulphide oxidation and carbonate buffering. High weathering rates of sulphide minerals occur in the High Arctic during the summer, and release of heavy metals must be considered a potential environmental issue if mining is initiated.
AB - An assessment of the environmental impact of the weathering of sulphide-rich rocks at Citronen Fjord, North Greenland, provided information on sulphide oxidation rates and metal release from outcrops of sediment-hosted, stratiform ore that may be mined for its zinc content. In situ oxygen uptake rates were measured at the surface of partly weathered sulphide-rich outcrops and compared with metal contents in streams and soil water. The oxygen uptake rates measured during August 1996 were of the same order of magnitude as those reported from mine tailings at lower latitudes. The variation in metal concentrations and pH of the drainage waters reflects the spatial variation in sulphide oxidation and carbonate buffering. High weathering rates of sulphide minerals occur in the High Arctic during the summer, and release of heavy metals must be considered a potential environmental issue if mining is initiated.
KW - High arctic
KW - Oxygen
KW - Pyrite
KW - Sphalerite
KW - Sulphide oxidation
KW - Zinc
UR - http://www.scopus.com/inward/record.url?scp=0032194449&partnerID=8YFLogxK
U2 - 10.1139/t98-047
DO - 10.1139/t98-047
M3 - Journal article
AN - SCOPUS:0032194449
VL - 35
SP - 895
EP - 901
JO - Canadian Geotechnical Journal
JF - Canadian Geotechnical Journal
SN - 0008-3674
IS - 5
ER -
ID: 346057378