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The objective of our study was to examine the mineralogy and chemical composition of ochreous sediments accumulated in the area of four abandoned Sb deposits from Slovakia. Each of them is from different geological settings and there are also differences between types of mineralization and mine processing. Samples were collected mainly from mine drainages and fraction under 0.063 mm was analyzed using conventional methods, including X-ray diffraction, IR spectroscopy, transmission electron microscopy and sequentia...