https://js.ugd.edu.mk/index.php/GEOLMAC/issue/feed Geologica Macedonica 2020-12-21T13:01:02+00:00 Prof. Todor Serafimovski, Ph.D. todor.serafimovski@ugd.edu.mk Open Journal Systems <p>The Geologica Macedonica is an&nbsp;international, open access, peer reviewed, both&nbsp;online and printed&nbsp;journal.</p> <p>The journal focuses on the following&nbsp;areas of publication: Mineralogy, Petrology, Geochemistry, Ore deposits, Environmental geochemistry, Hydrogeology, Engineering geology, Geophysics, and other branches of the Earth Sciences.</p> <p>&nbsp;</p> https://js.ugd.edu.mk/index.php/GEOLMAC/article/view/3826 Introduction 2020-12-11T13:54:53+00:00 Todor Serafimovski todor.serafimovski@ugd.edu.mk 2020-12-11T13:24:23+00:00 Copyright (c) 2020 Geologica Macedonica https://js.ugd.edu.mk/index.php/GEOLMAC/article/view/3827 Geochemical properties of lead-zinc slag landfill from MHK Zletovo in Veles, North Macedonia 2020-12-21T12:56:47+00:00 Robert Šajn Robert.Sajn@geo-zs.si Trajče Stafilov Robert.Sajn@geo-zs.si Blažo Boev blazo.boev@ugd.edu.mk Todor Serafimovski todor.serafimovski@ugd.edu.mk Goran Tasev goran.tasev@ugd.edu.mk Zlatko Ilijoski Robert.Sajn@geo-zs.si Ivan Boev ivan.boev@ugd.edu.mk <p>"Regional innovation scheme for zero waste extraction of critical raw materials" (RIS-RECOVER)<br>project, was implemented within the framework of the European Institute of Innovation and Technology (EIT) to evaluate and select the most promising technologies for mineral and metallurgical extraction of elements from metallurgical<br>slag in the Republic of North Macedonia. This project focused on metallurgical slag from the former Pb-Zn smelting<br>plant "MHK Zletovo", which was disposed of in the vicinity of Veles. Samples of waste material were obtained out by<br>drilling through the slag deposit at eight locations and collecting samples at 2 m intervals. Using inductively coupled<br>plasma – mass spectrometry (ICP-MS) 60 chemical elements were analyzed. It was found that the slag deposit is<br>heterogeneous. The most abundant metals of interest for further extraction were Zn and Pb, followed by Cd, Ag, Au<br>and In. However, the following metals were also present in economical quantities: As, Be, Bi, Cu, Fe, Mn, Nb, Pd, Sb,<br>Se, Sn, Te and Tl, along with rare earth elements. The average Zn content was 9.6% (between 5.6 and 14%), and the<br>total amount of about 120,000 t indicates a viable economic benefit in the recovery of metals from this landfill</p> 2020-12-11T13:35:05+00:00 Copyright (c) 2020 Geologica Macedonica https://js.ugd.edu.mk/index.php/GEOLMAC/article/view/3828 Heavy metals, uranium and thorium in agricultural soils and plants from the Buhovo region, Bulgaria 2020-12-21T12:57:55+00:00 Tanja Stoilkova tstoilkova@gea.uni-sofia.bg Vasilka Mladenova tstoilkova@gea.uni-sofia.bg Dimitrina Dimitrova tstoilkova@gea.uni-sofia.bg <p>Ten soil and five plant samples from private gardens in Buhovo town and from the agricultural<br>area between Buhovo town and Yana village, Bulgaria, were investigated. Inductively coupled plasma mass spectrometry was used for the determination of Cu, Pb, Zn, Cd, Hg, Ni, As, Cr, U and Th concentrations. The results showed<br>higher concentrations of Pb and As in soil samples. The highest contents of U and Th were determined in soils collected<br>from private gardens in Buhovo town and sample collected from the Manastirska riverside. Among the plant samples,<br>the highest uptake of Pb, As, Cr and Cu were established for the sunflower and wheat stems. The comparison of soil<br>and plant samples U/Th ratios clearly indicate uranium enrichment of the sunflower and thorium enrichment of the<br>wheat samples. In the wild briar, hawthorn and reed fruits the contents of U and Th were below the detection limit.</p> 2020-12-11T13:39:42+00:00 Copyright (c) 2020 Geologica Macedonica https://js.ugd.edu.mk/index.php/GEOLMAC/article/view/3829 Seismic explorations on the Bela Voda locality near Berovo 2020-12-21T12:58:43+00:00 Blagica Doneva blagica.doneva@ugd.edu.mk Marjan Delipetrev blagica.doneva@ugd.edu.mk Gorgi Dimov blagica.doneva@ugd.edu.mk <p>This paper presents the results from the explorations conducted on the locality Bela Voda, village<br>Dvorište near Berovo. The purpose of the site survey is to determine the potential of the water supplying with underground water according to the represented structural-tectonic and hydrogeological structure, locate and prognostically<br>design exploratory wells for water supply according to the indicated potential, conditions and opportunities for ground<br>water capture. For the needs of the geophysical measurements, field hydrogeological reconnaissance of the terrain has<br>been performed previously. Hydrogeological research and geophysical measurements have been conducted on the locations where hydrogeological characteristics of the terrain and the presence of the types of water bearing environments<br>within the research area have been defined and explained. The investigations are performed by means of reflective<br>seismic scanning of the structural-tectonic assemblage on the terrain by representative investigative profiles and analysis of the known geological data. 10 investigative profiles (RL) with the total length of 1.5 km were made, of which<br>2 in the longitudinal direction of the Bela Voda river and 8 in the transverse or normal profiles of the river itself. The<br>field scanning along the investigative profiles was performed with a seismic wave excitation step and a 5 m distance<br>of geophones and an offset of 10 m. The obtained results from the performed geophysical investigations have confirmed<br>that there is a small zone of Upper Jurassic granite in which a fissure type of aquifer with fissure porosity is formed.<br>For the construction of well exploration (exploitation boreholes) there is a limited potential area, and four potential<br>locations are proposed.</p> 2020-12-11T13:43:09+00:00 Copyright (c) 2020 Geologica Macedonica https://js.ugd.edu.mk/index.php/GEOLMAC/article/view/3830 Characterization of the particle size fractions of bentonite clay from Ginovci, Republic of North Macedonia 2020-12-21T12:59:41+00:00 Boško Boškovski bboskovski@tmf.ukim.edu.mk Slobodan Bogoevski bboskovski@tmf.ukim.edu.mk <p>The examined bentonite clay contains montmorillonite as a basic mass. As an admixtures it<br>containes quartz, illite and other minerals. The admixtures are inhomogeneously distributed in various particle size<br>fractions. The subject of this research is concentration and separation of existing admixtures from bentonite clay<br>(–0.063 mm), a commercial product of Bentomak. Wet sieve analysis and elutriation were applied as separation<br>methods. In order to define the efficiency of the methods, a complex examination for characterization of the fractions<br>was realized. Simultaneous review of the results of XRD, microscopic examinations and chemical analysis indicates<br>that in the finest fraction (–0.032 mm) the concentration of the admixures is smaller for 80% than in the other fractions.</p> 2020-12-11T13:45:53+00:00 Copyright (c) 2020 Geologica Macedonica https://js.ugd.edu.mk/index.php/GEOLMAC/article/view/3831 Preparation of GIS landslide inventory for the Polog Region 2020-12-21T13:00:25+00:00 Nataša Nedelkovska n_nedelkovska@hotmail.com Igor Peševski n_nedelkovska@hotmail.com Milorad Jovanovski n_nedelkovska@hotmail.com Jovan Papić n_nedelkovska@hotmail.com Svemir Gorin n_nedelkovska@hotmail.com Ivan Radevski n_nedelkovska@hotmail.com <p>This paper deals with preparation of Geographic Information Systems (GIS) landslide inventory<br>for the Polog region. A number of activities were undertaken for this purpose, such as: analysis of own data on landslides, visits of the sites noted in the surveys filled by municipalities, digitizing of landslides from old geological maps<br>in scale 1:25000, analysis and digitizing of landslides from the archive of the Geological Survey of Macedonia, interviews with employees and retired colleagues from geotechnical companies, analysis of landslides along the channels<br>of the “Mavrovo” system, visit to the National University in Tetovo and joint site visit, and visits to several geotechnical<br>companies in Macedonia. Since this is the first attempt to create a regional landslide inventory in N. Macedonia, the<br>adopted structure of the inventory is presented in the paper. Moreover, to see what benefits can be gained from the<br>availability of such inventory some of the most important findings regarding the landslides are presented further. Currently the inventory consists of 136 occurrences, and in time it should be appropriately updated. The main findings<br>related to the distribution and characteristics of the landslides show that future analyses should include preparation of<br>landslide susceptibility/hazard models both for shallow and deep landslides, as well as for flow-like type of slides. In<br>the following stages of investigation, it is planned to analyze a LIDAR (LIght Detection and Ranging) survey that is<br>being prepared for the region and incorporate more landslides in the inventory. Also, findings of the InSAR (Interferometric Synthetic Aperture Radar) analysis will be combined with the inventory, which will lead to conclusions on the<br>movement rates of detected sites. The latter two approaches will be presented in future papers.</p> 2020-12-11T13:50:35+00:00 Copyright (c) 2020 Geologica Macedonica https://js.ugd.edu.mk/index.php/GEOLMAC/article/view/3832 Mining waste in circular economy – legislative aspect 2020-12-21T13:01:02+00:00 Senko Pličanič senko.plicanic@pf.uni-lj.si Ana Mladenović senko.plicanic@pf.uni-lj.si Alenka Mauko Pranjić senko.plicanic@pf.uni-lj.si Petra Vrhovnik senko.plicanic@pf.uni-lj.si <p>One of the common European commitments is a transition towards a green circular economy in<br>which waste is not discarded and considered to be just an environmental problem, but should be recognized as an<br>important potential source of raw materials for industry. In a priority order in waste management activities, introduced<br>by the Waste Directive in 2012, recycling is set just behind the waste prevention and reuse. Many types of waste can<br>be recycled, the most perspective being construction, industrial and mining wastes. The latter are produced and disposed<br>of at mine sites during the excavation and processing of ore and are extremely perspective due to large quantities and<br>remaining of different metals, however still underutilized, with low recycling rate. Many mining wastes are inert and<br>do not releases contaminants into environment, however, some of them are problematic and even require monitoring.<br>Reprocessing of these wastes, which include beneficiation and sequential extraction of valuable metals in the first phase<br>and recycling of residues in both structural and civil engineering in the second phase establishes a zero waste model<br>with several benefits for economy, environment and society. Out of the South-East European countries, North Macedonia has great potential to establish this model. As a consequence of long mining tradition and abundant ore resources,<br>there are many mining and metallurgical tailings, on the other hand vivid economy and numerous sinks for use of<br>recycled materials in construction sector can accommodate these quantities. However, there are open questions in terms<br>of administrative procedures and legislation. What are those obstacles that accompany the smooth establishment of the<br>proposed model from a legislative point of view? This paper deals with the situation in North Macedonia, in terms of<br>opportunities, legislative options and the need to adopt new legislation, taking also into account the current problems<br>in this field in Europe.</p> 2020-12-11T13:54:32+00:00 Copyright (c) 2020 Geologica Macedonica