Geochemistry and potential environmental impact of the mine tailings at Rosh Pinah, southern Namibia

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11310%2F15%3A10306921" target="_blank" >RIV/00216208:11310/15:10306921 - isvavai.cz</a>
Alternative codes found
RIV/60460709:41210/15:67440 RIV/61989592:15310/15:33153656 RIV/00025798:_____/15:00000186 RIV/00216224:14310/15:00111296
Result on the web
<a href="http://dx.doi.org/10.1016/j.jafrearsci.2015.02.005" target="_blank" >http://dx.doi.org/10.1016/j.jafrearsci.2015.02.005</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.jafrearsci.2015.02.005" target="_blank" >10.1016/j.jafrearsci.2015.02.005</a>

Result language
angličtina
Original language name
Geochemistry and potential environmental impact of the mine tailings at Rosh Pinah, southern Namibia
Original language description
Mine tailings at Rosh Pinah located in semiarid southern Namibia were investigated by the combination of mineralogical methods and leaching using water and simulated gastric solution. They are well-neutralized with leachate pH > 7 and neutralization potential ratios (NPR) up to 4. Neutralization is mainly due to abundant Mn-rich dolomite in the matrix. Concentrations of released contaminants in water leachate follow the order Zn > Pb > Cu > As. Relatively high leached concentrations of Zn and partly also of Pb are caused by their link to relatively soluble carbonates and Mn-oxyhydroxides. In contrast, As is almost immobile by binding into Fe-oxyhydroxides, which are resistant to dissolution. Barium is released by the dissolution of Ba-carbonate (norsethite) and precipitates in sulfate-rich pore water as barite. Dissolved concentrations in neutral mine drainage water collected in the southern pond are low, but when total concentrations including colloidal fraction are taken into account
Czech name
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Czech description
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Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
DD - Geochemistry
OECD FORD branch
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Project
<a href="/en/project/GAP210%2F12%2F1413" target="_blank" >GAP210/12/1413: Impact of ore mining and processing on the environment in Namibia: Modelling pollutants migration in soils, plants and groundwaters</a><br>
Continuities
Z - Vyzkumny zamer (s odkazem do CEZ)<br>I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year
2015
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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