Characterization and stable isotopic fingerprinting of mine seepage in hyperarid environments: An example of the Namib Lead & Zinc mine, Namibia
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60460709%3A41210%2F24%3A98431" target="_blank" >RIV/60460709:41210/24:98431 - isvavai.cz</a>
Alternative codes found
RIV/00025798:_____/24:10169210 RIV/00216208:11310/24:10487032 RIV/61989592:15310/24:73627134
Result on the web
<a href="https://www.sciencedirect.com/science/article/abs/pii/S0375674224001705" target="_blank" >https://www.sciencedirect.com/science/article/abs/pii/S0375674224001705</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.gexplo.2024.107554" target="_blank" >10.1016/j.gexplo.2024.107554</a>
Alternative languages
Result language
angličtina
Original language name
Characterization and stable isotopic fingerprinting of mine seepage in hyperarid environments: An example of the Namib Lead & Zinc mine, Namibia
Original language description
Mine drainage at the Namib Lead & Zinc mine in the hyperarid environment of the Namib Desert close to Swakopmund, Namibia, has been investigated using mineralogical, hydrochemical, and isotopic methods. The principal ore minerals are galena and sphalerite. Mine drainage is neutral due to the reactions with the marble gangue rock. Mine water seepage is of the Na-Ca-Cl-SO4 type and sources of dissolved ions are likely halite and gypsum in the unsaturated zone above the mine. Concentrations of dissolved metals are relatively low, and the principal attenuation mechanism of metals is probably their adsorption on ferric minerals because equilibrium of the seepage water with secondary minerals that host the metals is not attained. Based on strongly enriched ?2H (up to 13.27 ‰) and ?18O (up to 4.5 ‰) values, seepage water originates from advective fog and is strongly evaporated after the fog deposition. The high ?13C(DIC) values indicate equilibrium with carbonates and CO2 de-gassing. The ?34S(SO4) values are enriched in shallower depths, probably because of pedogenic gypsum dissolution and then the ?34S values decrease with depth, probably due to the increasing input of sulfur from sulfides. Mine drainage at the Namib Lead & Zinc mine does not represent any risk for the environment due to its neutral character and relatively low seepage water volumes caused by high degree of aridity.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
40104 - Soil science
Result continuities
Project
<a href="/en/project/GA23-05051S" target="_blank" >GA23-05051S: Metals and their isotopes in active and abandoned mining areas of sub-Saharan Africa – towards understanding of their geochemistry and impacts</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2024
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Journal of Geochemical Exploration
ISSN
0375-6742
e-ISSN
0375-6742
Volume of the periodical
265
Issue of the periodical within the volume
OCT 2024
Country of publishing house
NL - THE KINGDOM OF THE NETHERLANDS
Number of pages
9
Pages from-to
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UT code for WoS article
001285339900001
EID of the result in the Scopus database
2-s2.0-85199907516