VOLUME 54 (1)/April 2025

Geological Institute, Bulgarian Academy of Sciences, 1113 Sofia, Bulgaria
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National Institute of Geophysics, Geodesy and Geography, Bulgarian Academy of Sciences, 1113 Sofia, Bulgaria
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Geological Institute, Bulgarian Academy of Sciences, 1113 Sofia, Bulgaria
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Geological Institute, Bulgarian Academy of Sciences, 1113 Sofia, Bulgaria
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National Institute of Geophysics, Geodesy and Geography, Bulgarian Academy of Sciences, 1113 Sofia, Bulgaria
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Sofia University “St. Kliment Ohridski”, Faculty of Geology and Geography, 1504 Sofia, Bulgaria
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Geological Institute, Bulgarian Academy of Sciences, 1113 Sofia, Bulgaria
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Geological Institute, Bulgarian Academy of Sciences, 1113 Sofia, Bulgaria
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Geological Institute, Bulgarian Academy of Sciences, 1113 Sofia, Bulgaria
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Geological Institute, Bulgarian Academy of Sciences, 1113 Sofia, Bulgaria

Institute of Mineralogy and Crystallography, Bulgarian Academy of Sciences, Acad. G. Bonchev Street, Block 107, Sofia 1113, Bulgaria
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Institute of Mineralogy and Crystallography, Bulgarian Academy of Sciences, Acad. G. Bonchev Street, Block 107, Sofia 1113, Bulgaria
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Institute of Mineralogy and Crystallography, Bulgarian Academy of Sciences, Acad. G. Bonchev Street, Block 107, Sofia 1113, Bulgaria
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Institute of Mineralogy and Crystallography, Bulgarian Academy of Sciences, Acad. G. Bonchev Street, Block 107, Sofia 1113, Bulgaria
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Geological Institute, Bulgarian Academy of Sciences, Acad. G. Bonchev Street, Block 24, Sofia 1113, Bulgaria
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Geological Institute, Bulgarian Academy of Sciences, Acad. G. Bonchev Street, Block 24, Sofia 1113, Bulgaria

Department of Environmental Sciences, Basel University, 4056 Basel, Switzerland
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Geological Institute, ETH-Zentrum, CH-8092 Zürich, Switzerland
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Department of Environmental Sciences, Basel University, 4056 Basel, Switzerland; Geological Institute, ETH-Zentrum, CH-8092 Zürich, Switzerland
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School of Geography, Environment and Earth Sciences, Victoria University, Wellington, New Zealand
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Zlatna Reka Resources, 11167 Belgrade, Serbia