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| 02671nam 2200301za 4500 |
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| 001 | 9.844244 |
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| 003 | CaOODSP |
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| 005 | 20221107152713 |
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| 007 | cr ||||||||||| |
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| 008 | 170921s2005 onc #o f000 0 eng d |
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| 040 | |aCaOODSP|beng |
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| 043 | |an-cn-mb |
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| 086 | 1 |aEn13-5/05-161E-PDF|zEn13-5/5-161E-PDF |
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| 245 | 00|aEvaluation of long-term sulfide oxidation processes within pyrrhotite-rich tailings, Lynn Lake, Manitoba |h[electronic resource] / |cM. Gunsinger, ... [et al.]. |
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| 260 | |a[Burlington, Ont.] : |bEnvironment Canada, National Water Institute, |c[2005] |
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| 300 | |a[8] p. |
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| 490 | 1 |aNWRI contribution ; |vno. 05-161 |
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| 500 | |aDigitized edition from print [produced by Environment and Climate Change Canada]. |
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| 500 | |aCover title. |
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| 500 | |aOriginally published in the Journal of contaminant hydrology, 83 (2006). |
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| 520 | 3 |a"Oxidation reactions have depleted sulfide minerals in the shallow tailings and have generated sulfate and metal-rich pore water throughout the East Tailings Management Area (EFMA) at Lynn Lake, Manitoba, Canada. Information concerning the tailings geochemistry and mineralogy suggest the sulfide oxidation processes have reached an advanced stage in the area proximal to the point of tailings discharge. In contrast, the distal tailings, or slimes area, have a higher moisture content close to the impoundment surface, thereby impeding the ingress of oxygen and limiting sulfide oxidation. Numerical modelling of sulfide oxidation indicates the maximum rate of release for sulfate, Fe, and Ni occurred shortly after tailings deposition ceased. Although. the sulfide minerals have been depleted in the very shallow tailings, the modelling suggests that sulfide oxidation will continue for hundreds‘ and possibly thousands of years. The combination of sulfide minerals, principally pyrrhotite, that is susceptible to weathering processes and the relatively dry, coarse-grained nature of the tailings have resulted in the formation of a massive-hardpan layer in the proximal area of the ETMA. Because extensive accumulations of secondary oxyhydroxides of ferric iron are already present, remediation strategies for the EFMA should focus on mitigating the release of sulfide oxidation products rather than on preventing further oxidation"--p. [1]. |
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| 692 | 07|2gccst|aMinerals |
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| 700 | 1 |aGunsinger, M.R. |
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| 710 | 1 |aCanada. |bEnvironment Canada. |
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| 710 | 2 |aNational Water Research Institute (Canada) |
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| 830 | #0|aNWRI contribution ;|vno. 05-161|w(CaOODSP)9.844121 |
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| 856 | 40|qPDF|s965 KB|uhttps://publications.gc.ca/collections/collection_2017/eccc/En13-5-5-161-eng.pdf |
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