Hydrogeochemical characteristics of mine water in the Harz Mountains,Germany |
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| Institution: | 1. TU Clausthal, Institut für Endlagerforschung, A.-Römer-Str. 2A, 38678 Clausthal-Zellerfeld, Germany;2. Universität Göttingen, Angewandte Geologie, Goldschmidtstr. 3, 37077 Göttingen, Germany;1. Department of Pediatrics, Indiana University School of Medicine, Indianapolis, IN 46202, USA;2. Department of Biochemistry and Molecular Biology, Indiana University School of Medicine, Indianapolis, IN 46202, USA;3. Department of Pharmacology and Toxicology, Indiana University School of Medicine, Indianapolis, IN 46202, USA;4. The Simon Cancer Center and The Wells Center for Pediatrics Research, Indiana University School of Medicine, Indianapolis, IN 46202, USA;1. Graduate School of Fisheries and Environmental Sciences, Nagasaki University, Nagasaki 852-8521, Japan;2. Graduate School of Science and Technology, Nagasaki University, Nagasaki 852-8521, Japan;3. Division of Biochemistry, Faculty of Fisheries, Nagasaki University, Nagasaki 852-8521, Japan;1. State Key Laboratory of Geological Processes and Mineral Resources, China University of Geosciences, Beijing 100083, China;2. Tianjin Institute of Geology and Mineral Resources, Tianjin 300170, China;3. Department of Geology and Geological Engineering, Colorado School of Mines, Golden, CO 80401, USA;4. Key Laboratory of Western Mineral Resources and Geological Engineering of Ministry of Education, Chang’an University, Xi’an 710054, China;1. Department of Environmental Science & Analytical Chemistry (ACES), Stockholm University, Stockholm SE-106 91, Sweden;2. Department of Land and Water Resources Engineering, KTH (Royal Institute of Technology), Stockholm SE-100 44, Sweden;1. Sinotech Engineering Consultant Inc., Taipei 110, Taiwan;2. Department of Geology, National Taiwan University, Taipei 106, Taiwan;3. Taiwan Power Company, Taipei 100, Taiwan |
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| Abstract: | Water samples (springs, creeks, mine adits) from different former mining districts of the Harz Mountains and the nearby Kupferschiefer (copper shale) basin of Sangerhausen were analysed for major ions and trace metals. Due to more intensive water rock interactions including the ore minerals, the mine water concentrations of main components and trace metals are generally higher compared to non mining affected surface waters of the mountain range. Furthermore, the content of major ions in mine water is enriched by mixing processes with saline waters from Permian layers in the Kupferschiefer district and at the deeper levels of the mines in the Upper Harz Mountains. The waters of the different mining districts can be distinguished by trace metal occurrences and concentrations derived from the different ore bodies. Water from the Kupferschiefer mines shows the highest Na, Cl, Cu, Mo and U concentrations, whereas a combination of elevated As and Se concentrations is typical for most of the samples from the mines around St. Andreasberg. However, there are exceptions, and some water samples of all the investigated mining districts do not follow these general trends. Despite the influence of mining activities and ore mineralisation, hydrochemical effects due to rain water dilution can be seen in most of the waters. According to the elevation of the mountain range, higher precipitation rates decrease the ion concentrations in the waters of springs, creeks and mine adits. |
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| Keywords: | Harz Mountains Hydrogeochemistry Kupferschiefer Mine water Trace metals Water rock interaction |
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