Abstract
The Srebrenica area in Eastern Bosnia (Republika Srpska) is characterized by numerous Pb-Zn sulfide ore bodies and several iron-sulfate mineral water springs. The spring Ljepotica appears in the central part of the area and has similar water composition and spring sediment "limonite" mass like nearby the famous medical iron-arsenic water spring Crni Guber. The sequential chemical analysis of iron and XRD-studies of the relative shortly aged spring sediment showed that it is composed by ferrihydrite, jarosite and some goethite. The ratio Fedit/Fetot of 0.76 indicates that jarosite appears as a main constituent, in contrast to the Crni Guber spring sediment in which occurs irregularly and in traces. Trace elements pattern is characterized by appearance of As, Pb, Sb, and Sr as the most abundant (>5000 and up to 1450, 780, and 210 ppm, respectively), small contents of Cr, Cu, Ti, V, and Zn (up to 60 ppm), and traces of Mn, Ni and Sc (below 10 ppm). Chemical analysis of the sediment indicates that jarosite is of the jarosite-hydronium jarosite type.
Highlights
The broader area of the town of Srebrenica, in Republika Srpska, in the eastern Bosnia, is a well known mining area, having a mining history longer than two thousand years
It was found that the Ljepotica spring sediment is characterized by the high total iron content, as high as 30.68%, and relative lower contents of the oxalate‡ and dithionate soluble iron (Table 1)
The Feox/Fetot and Fedit/Fetot ratios indicate the follows: ferrihydrite appears to be a main constituent of the sediment, goethite is present in the small amount, and an other phase which may be jarosite is significantly abundant
Summary
The broader area of the town of Srebrenica, in Republika Srpska, in the eastern Bosnia, is a well known mining area, having a mining history longer than two thousand years. It is situated at the boundary with Serbia and belongs to the Tertiary Serbo‡ ‡Macedonian eruptive and Pb‡Zn metallogenic province. In the Roman time, as having been an important producer of silver and lead, the Srebrenica area was the center of the large mining province Dalmatia. In the Medieval, it was an important mining and lead and silver producing area. The modern mining started about 40 years ago and the ore is using as a source of lead, silver zinc and cadmium. D= dacit, Dpy= piritisan dacit (andezit), KM= kontaktno‡metamorfne stene, Pz= paleozojski {kriqci; 1‡5 rudneice: 1. kvarc‡piritsko‡pirotinske, 2. kvarc‡pirit‡Pb‡Zn, 3. kvarc‡siderit‡Pb‡Zn, 4. kvarc‡ Sb‡(Zn, Pb), 5. kvarc‡piritske
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