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Упит dcterms_subject_txt:clay mineralogy

139 items

  • Atmospheric exposure vs burying: influences on damage intensity of built-in kersantite in the monument of the Small Staircase (Belgrade, Serbia)

    Nevenka Novaković, Predrag Dabić, Vesna Matović (2023)
    Proučavan je efekat „zatrpanog kamena“ na intenzitet procesa degradacije prisutnih na kersantitu koji je ugrađen u spomenik Malo stepenište. Istraživanja su vršena na uzorcima stene iz kamenoloma i na oštećenim kamenim blokovima ugrađenim u spomenik. Dok su neki delovi stepeništa bili pod zemljom 90 godina, većina kamenih elemenata je bila izložena različitim uslovima sredine i antropogenim uticajima. Urađeno je detaljno mapiranje trenutnog stanja spomenika kako bi se istražio uticaj “zatrpavanja” i kompleksne geometrije spomenika na tip propadanja i variranje ...
    Raspadanje, Indeks oštećenja, Zatrpavanje, Fizička svojstva, Kersantit

  • Tectonic evolution of the Circum-Moesian orocline of the Carpatho-Balkanides: Paleomagnetic constraints

    Emő Márton, Vesna Cvetkov, Miodrag Banješević, Gábor Imre, Aleksandar Pačevski (2024)
    Apuseni-Banat-Timok-Srednogorie belt, danubicum, paleomagnetism, oroclinal bending

  • Aлтерације перидотита контролисане карактером флуида на примеру харцбургита Рудника - Серпентинизација или талкизација?

    Стефан Петровић, Наталија Батоћанин (2020)
    У раду су приказани резултати испитивања серпентинисаних харцбургита Брђана (43°58'45.1" СГШ, 20°25'12.6" ИГД) и талкизираних харцбургита откривених у интервалу 429-559.8 m у истражној бушотини 330А/18 (44°07'33.2" СГШ, 20°30'28.5" ИГД) на Руднику. Узорци оба локалитета показују карактеристике резидуалних харцбургита из омотача, односно тектонита; лепидобластичне, бластозрнасте, или порфирокластичне структуре и масивне текстуре. Серпентинисани харцбургити и серпентинити Брђана су изграђени од серпентина, ретких реликата оливина и ортопироксена, акцесорног спинела, и веома ретког секундарног магнезита и магнетита. Најдоминантнији састојак (местимично гради и преко ...
    Рудник, Брђани, харцбургити, серпентинити, талк
    ... dedicated Rigaku PDXL 2.0 software (with implemented ICCD PDF-2 2016 database). 24 All investigations were performed at the Department of Mineralogy, Crystallography, Petrology and Geochemistry at the Faculty of Mining and Geology, University of Belgrade. RESULTS Harzburgites from the ...

  • Geochemical study of U, Th and REE mineralizations in Jurassic sediments and hydrochemical characterization of groundwaters in Eastern Serbia – Case study: Plavna area

    Jovan Kovačević, Maja Todorović, Marina Ćuk, Petar Papić (2016)
    jurski sedimenti, uran, torijum, elementi retkih zemalja, podzemna voda, istočna Srbija

  • Prostorni položaj ofiolita istočne Vardarske zone: geofizičko-geološki model i njegove geodinamičke implikacije

    Dragana D. Petrović (2015-12-29)
    Centralni deo Balkanskog poluostrva je geotektonski veoma složen. Tetis je zatvorentokom gornjeg mezozoika, a ofioliti na zapadu i ofioliti Vardarske zone predstavljajuostatke nekadašnjih okeanskih prostora. Najistočniji deo Vardarske zone razlikuje se odsvih ostalih ofiolita na Balkanskom poluostrvu i karakteriše se najizraženijim suprasubdukcijskimafinitetom. Istočna vardarska zona locirana je u centralom delu Srbije.Na severu se prostire do Apusena u Rumuniji, a na jugu obuhvata cetralni deoMakedonije i Peonias zonu u severnoj Grčkoj. Istočna vardarska zona se nalazi istočnood geotektonske jedinice Kopaonik ...
    Istočna vardarska zona; ofioliti; 2D i pseudo 3D geofizičko-geološkimodel; geodinamička evolucija
    ... Greece, 43 (4), 1919- 1929. Christofides, G., Soldatos, T., Koroneos, A., 1990. Geochemistry and evolution of the Fanos granite, N. Greece. Mineralogy and Petrology, 43, 49-63, doi: 10.1007/BF01164221. Coleman, R., G., 1977. Ophiolites-Ancient oceanic litosphere?: Minerals and rocks, Berlin ...
    ... of Mt. Bukulja (central Serbia): evidence for Pannonian extension-related granitoid magmatsism in the northern Dinarides, European Journal of Mineralogy 19, 4, 513-532, http://dx.doi.org/10.1127/0935-1221/2007/0019-1736. Cvetković, V., Šarić, K., Prelević, D., Genser, J., Neubauer, F., Höck, V ...
    ... 2014.05.026 Foley, S. F., Andronikov, A.V., Jacob, D. E., Melzer, S., 2006. Evidence from Antarctic mantle peridotite xenoliths for changes in mineralogy, geochemistry and geothermal gradients beneath a developing rift, Geochim. Cosmochim. Acta 70, 3096–3120, doi: http://doi.org/10.1016/j.gca.2006 ...

  • Properties of fly ash and slag from the power plants

    Miloš Šešlija, Aleksandra Rosić, Nebojša Radović, Milinko Vasić, Mitar Đogo, Milovan Jotić (2016)
    This paper describes the physical, chemical and mineral properties of ash and slag, which were taken from thermal power plants Nikola Tesla A, Nikola Tesla B, Kostolac A and Kostolac B. The knowledge of the mineralogical material composition is important because the type of minerals directly determines the properties of the fly ash and slag and their possible application. Laboratory tests showed that ash and slag samples consist of the following minerals: amorphous materials, quartz, feldspar, mullite, melilite, cristobalite, ...
    fly ash, slag, physical composition, chemical composition, mineral composition, X-ray diffraction method
    ... based on their origin, composition, properties, and behavior.– Fuel, 86, 1490–1512. WARD, C. & FRENCH, D. (2005): Relation between Coal and Fly Ash Mineralogy, Based on Quantitative X-Ray Diffraction Methodos. 2005 World of Coal Ash, In- ternational Symposium, April 11–15, 2005, 1–14. ŽIVOTIĆ, D., BECHTEL ...
    ... (2012): Geohemijska analiza tragova metala Riblje gline s lokaliteta Kirkevig (Stevns Klint, Danska) [Geochemical analysis of trace metals of Fish Clay from locality Kirkevig (Stevns Klint, Denmark) – in Serbian, with an English Abstract].– Unpubl. PhD Thesis, Faculty of Sciences, University of Niš ...

  • BEYOND 2020 - Geology explorations and open pit activities affectation in reclamation designing in Kolubara Coal Mines (KCM) Serbia, new considerations

    Bojan Dimitrijević, Bogoljub Vučković, Radmila Gaćina (2023)
    Geology explorations in KCM runs from 1936. year up to these days and still ongoing. Results in >7,200 drill holes with ≈600,000 m of core drilling and gave lignite ore resources of > 4,1Bt, which 1,15Bt are excavated since 1986. of XIX up to early years of XXI century. For further mining operations in open pits stay 1,5Bt of lignite. Under waste heaps are ≈80 km2, additional 85 km2 should be filled. All of that masses/areas were, are ...

  • Exhumation history of the Juhor Mts. in central Serbia, the Northern Serbo–Macedonian Subunit

    Uros Stojadinovic, Hannah Pomella, Nemanja Krstekanić, Bojan Kostić, Maja Maleš, Nikola Randjelovic, Miloš Radonjić (2024)
    Northern Serbo–Macedonian Subunit, low-t thermochronology, kinematic analyses, extensional deformations

  • Late and post-collisional tectonic evolution of the Adria-Europe suture in the Vardar Zone

    Emő Márton, Marinko Toljić, Vesna Cvetkov (2022)
    The Vardar Zone is a product of the Triassic-Jurassic opening of the Neotethys, Jurassic obduction, Late Cretaceous/Paleogene consumption of the oceanic crust and continental collision. During the last process, the Eastern Vardar Zone was thrust over the Central and eventually both onto the Western Vardar Zone. The present paleomagnetic and structural study provided new results from the first two zones in the Belgrade area. The younger set of data, together with published ones from the third zone, provide firm ...
    Adria–Europe suture, Vardar Zone, Paleomagnetism, Thrusting, Vertical axis rotation

  • Tectonic evolution of the Vršac Mts. (NE Serbia): Inferences from field kinematic and microstructural investigations

    Uroš Stojadinović, Nemanja Krstekanić, Bojan Kostić, Marija Ružić, Aleksa Luković (2021)
    The Vršac Mts. in NE Serbia represent the key area to investigate structural relations between the Northern Serbo-Macedonian Subunit and Supragetic Unit of the Dacia Mega-Unit. The geodynamic events during the Variscan orogeny in the Late Paleozoic colligated the two units and led to their metamorphic differentiation. The Late Cretaceous extension exhumed the medium-grade Serbo-Macedonian metamorphic rocks and structurally juxtaposed them against the low-grade metamorphosed basement of the Supragetic Unit along an E-dipping shear zone, which outcrops in the ...
    severna srpsko-makedonska subjedinica, supragetikum, kinematska analiza, multifazna ekstenzionalna deformacija
    ... Valley Corridor a cluster of gneiss domes made up by the medium- grade Serbo-Macedonian metamorphic rocks emerges from Table 1: Sampling and mineralogy information about the analysed thin sections. Sample Latitude Longitude Foliation dip-direction/dip Stretching lineation trend/plunge Mineral ...

  • Mesozoic carbonate rocks in Serbia used as dimension stone

    Vesna Matović, Tijana Vojnović Ćalić (2016)
    The building industry in Serbia uses, to a great extent, imported natural stone for architectural purposes. The significance of local deposits, particularly limestones, is not adequately perceived despite the country’s abundance of these valuable resources. Therefore, this study focuses on Serbia’s Mesozoic carbonate rocks, specifically on the deposits of four selected quarries: Klisura, Skrzut, Struganik, and Tisnica. The quality and prospects of the application of these limestones has not yet been the subject of a detailed, comprehensive investigation. Therefore, ...
    Ukrasni kamen, Mezozoik, Krečnjak, Srbija, Petrografija, Fizičko-mehanička svojstva
    ... properties with the technical requirements neces- sary for a suitable reference of natural stone products. The V. Matović (b+) Department of Mineralogy, Crystallography, Petrology and Geochemistry, Faculty of Mining and Geology, University of Belgrade, Djusina 7, Belgrade, Serbia e-mail: vesna ...
    ... biomicrite (mudstone and wackestone microfacies) —— primarily composed of microcrystalline calcite, whereas non-carbonaceous compounds include clay minerals, organic matter, and subordinated silty material. According to the CaCOxa content, micrite lime- stone refers to pure limestone, clayey ...
    ... examined rocks are predomi- nantly pure limestones (dolomitization is not observed). These limestones consist small amounts of isoluble residue (clay minerals and Fe-oxide/hydroxide). In general, the local appearance of clayey limestone, marly limestone, and marlstone in the form of very thin ...

  • Компарација метода XRF i ICP-MS на узорцима угља и продуктима сагоревања

    Бранко Костић, Ксенија Ераковић, Дејан Прелевић, Сабина Ковач, Драгана Животић (2023)
    геохемија, угаљ, продукти сагоревања, XRF, ICP-MS

  • Споменица 1991. – 2015. година: 135 година геологије и 70 година рударства на Универзитету у Београду

    главни и одговорни уредник Душан Поломчић (2016)
    Рударско-геолошки факултет
    ... , JOVIĆ V., ĐURIĆ S. 1997: Geology and Mineralogy of Ceramic Clay Deposits in Western Serbia. Geologica Carpathica, Series Clays, 6, 1, Bratislava, 57–60. SIMIĆ V., UHLIK P., 2006: Crystallite size distribution of clay minerals from select- ed Serbian clay deposits. Annales géologiques de la Péninsule ...
    ... полуос- трва, LIX/1, 313–325. MAKSIMOVIĆ Z., ĐURIĆ S., POHARC-LOGAR V., 1997: Takovite and a new nickel clay-like mineral from carstic deposits in Yugoslavia and Greece. Romanian Journal of Mineralogy, Vol. 78, 50–51. ПОХАРЦ-ЛОГАР В., ЛОГАР М., 1998: Минералошке карактеристике и порекло боје опала из ...
    ... Ag-Tl-Bi-Sb-S sy- stem. Mineralogy and Petrpology, 53, 251–263. CVETKOVIĆ LJ., BORONIKHIN V.A., PAVIĆEVIĆ M.K., KRAJNOVIĆ D., GRŽETIĆ I., LIBO- WITZKY E., GIESTER G., TILLMANNS E., 1995: Jankovićite, Tl5Sb9(As,Sb)4S22, a new Tl-sulfosalt from Allchsr, Macedonia. Mineralogy and Petrpology, 53, 125–131 ...

  • Damage quantification of built stone on Dark Gate (Belgrade, Serbia): sample of damage index application for decay rate evaluation

    Maja Franković, Nevenka Novaković, Vesna Matović (2015)
    The Dark Gate is the monument of culture, part of the cultural and historical complex of the Belgrade Fortress. It is constructed of limestone blocks that after 270 years of exposure to environmental conditions and different anthropogenic influences show wide ranges of decay forms. During 2007, detail registration of all built limestone microfacies and weathering forms was done using tools of monument mapping. A correlation scheme ‘‘intensity– damage category’’ was made according to the type, intensity, and distribution of ...
    Krečnjak, mapiranje, Indeks raspadanja, brzina raspadanja, progresija
    ... Institute of Belgrade, BelgradeKalemegdan 14, Serbia e-mail: nevenkan_'gmail.com V. Matović Faculty of Mining and Geology, Department of Mineralogy, Petrology, Crystallography and Geochemistry, University of Belgrade, Djusina 7, Belgrade, Serbia e-mail: vesna.matovic('rgf.bg.ac.rs in ...

  • Хидротермалне промене у издвојеним стратиграфским јединицама у бушотини јужно од Бора

    Павле Јовичић (2024)
    Анализом уступљених узорака из истражне бушотине јужно од Бора, од стране компаније Serbia Zijin Mining, утврђене су хидротермалне промене (алтерације) које прате стратиграфске чланове набушене самом бушотином. Установљене алтерације директно осликавају класично развиће порфирског Cu система, при чему је указано на њихову повезаност са минерализацијом, као и на потенцијалност самог истражног простора којем изабрана бушотина припада.
    Бор, хидротермалне промене, порфир

  • Evidence of Variscan and Alpine tectonics in the structural and thermochronological record of the central Serbo-Macedonian Massif (south-eastern Serbia)

    Milorad D. Antić, Alexandre Kounov, Branislav Trivić, Richard Spikings, Andreas Wetzel (2016)
    General Earth and Planetary Sciences
    ... in SW Bulgaria. Geol Balc 23:46 Macheva L, Titorenkova R, Zidarov N (2005) Kyanite-staurolite-gar- net orthoschists. Central Laboratory of Mineralogy and Crystal- lography “Acad. Ivan Kostov, Sofia Malešević M, Vukanović M, Obradinović Z et al (1980) Tumač za list Kuršumlija. Savezni Geološki ...
    ... terranes of Bulgaria. J Czech Geol Soc 48:94-95 Nenova P, Zidarov N (2008) Eclogites from Maleshevska Mountain, SW Bulgaria. Central Laboratory of Mineralogy and Crystal- lography “Acad. Ivan Kostov”, Sofia Neubauer F (2002) Evolution of late Neoproterozoic to early Paleo- zoic tectonic elements ...

  • Генеза хидротермалног Cu-Au система Чукару Пеки (Источна Србија)

    Милош Велојић (2021)
    Главни циљ испитивања хидротермалног система Чукару Пеки је разумевање процеса који су довели до његовог настанка, а посебно еволуције рудоносних флуида из којих је настала рудна минерализација. Утврђено је да је овај систем настао у периоду пре 86,78 - 85,19 Ma из магматског интрузива који је био богат водом и имао висок оксидативни потенцијал. Током хлађења, из овог магматског интрузива су издвојени веома врели флуиди, који су имали температуре изнад 600°С и висок салинитет. У ...
    Борска металогенетска зона, Тимочки магматски комплекс, порфирска лежишта, високосулфидациона лежишта, флуидне инклузије, рудне парагенезе, геохронологија, хидротермалне алтерације, LA-ICP-MS
    ... porphyry copper deposits of northern Chile. Contributions to Mineralogy and Petrology, 144:347-364. 6. Bakker, R.J., 2012. Package FLUIDS. Part 4: Thermodynamic modelling and purely empirical equations for H2O-NaCl-KCl solutions. Mineralogy and petrology, 105(1-2), 1-29. 7. Bakker, R.J., 2018. AqSo_NaCl: ...
    ... texture and chemical composition as a guide to magmatic processes and mixing in a granitic environment and coeval volcanic system. Contributions to Mineralogy and Petrology, 159(4), 579-596. 43. Gallhofer, D., Quadt, A. V., Peytcheva, I., Schmid, S. M., & Heinrich, C. A., 2015. Tectonic, magmatic, and ...
    ... A., 2016. Manganese mineralization in andesites of Brestovačka Banja, Serbia: evidence of sea- floor exhalations in the Timok Magmatic Complex. Mineralogy and Petrology, 110(4), 491. ГЕНЕЗА ХИДРОТЕРМАЛНОГ Cu-Au СИСТЕМА ЧУКАРУ ПЕКИ (ИСТОЧНА СРБИЈА) 104 108. Paton, C., Hellstrom, J ...

  • Development of a petrographic classification system for organic particles affected by self-heating in coal waste. (An ICCP Classification System, Self-heating Working Group – Commission III)

    M. Misz-Kennan, J. Kus, D. Flores, C. Avila, Z. Büçkün, N. Choudhury, K. Christanis, J.P. Joubert, S. Kalaitzidis, A.I. Karayigit, M. Malecha, M. Marques, P. Martizzi, J.M.K. O'Keefe, W. Pickel, G. Predeanu, S. Pusz, J. Ribeiro, S. Rodrigues, A.K. Singh, I. Suárez-Ruiz, I. Sýkorová, N.J. Wagner, D. Životić (2020)
    Self-heating of coal waste is a major problem in the leading coal-producing and consuming countries, independent of the recent or past coal exploitation history. The phenomenon of self-heating is dependent on many factors such as the properties of organic matter (maceral composition and rank), moisture and pyrite content, climate effects, and storage conditions (shape of the dump or compaction of the coal waste). Once deposited, coal waste undergoes oxidation, which can lead to self- heating with the overall temperatures ...
    Stratigraphy,Economic Geology,Geology,Fuel Technology

  • Sinteza i karakterizacija vanadata alkalnih metala sa elementima retkih zemalja

    Anđela Jovanović (2024)
    Predmet i cilj pisanja ovog rada su sinteza i karakterizacija vanadata alkalnih metala sa elementima retkih zemalja. Prilikom ovih istraživanja, ispitivan je sistem REE2O3–V2O5–KF, gde REE predstavlja trovalentni katjon izabranih elemenata retkih zemalja (Y, Sm, Eu, Gd, Er, Yb). Ovo istraživanje bazirano je na sintezi kristala, nakon čega su dobijeni kristali posmatrani pod binokularnom lupom, analizirani metodom rendgenske difrakcije na polikristalnom materijalu (XRPD) i metodom skenirajuće elektronske mikroskopije sa energetsko-disperzivnom spektroskopijom (SEM-EDS), kako bi se utvrdile karakteristike dobijenih kristala. ...
    elementi retkih zemalja, sinteza kristala metodom fluksa, vanadati alkalnih metala, rendgenska difrakcija, SEM-EDS metoda

  • Mineragenetske karakteristike i potencijalnostjuvelirskih mineralnih resursa leckog vulkanskog kompleksa

    Zoran Ž. Miladinović (2012-12-11)
    Jedan od najznačajnijih regiona u Srbiji, sa stanovišta potencijalnosti juvelirskih mneralnih resursa, predstavlja lecki vulkanski kompleks, tercijarne starosti i dominantno andezitskog sastava. Ovaj vulkanski kompleks površine preko 700km2 nalazi se u južnojSrbiji na prostoru imeđu Kuršumlije, Lebana i Medveđe.Prvi su pažnju na juvelirske mineralne sirovine ovog prostora obratili graditeljiJustinijane Prima-e (VI vek). Najintenzivnija istraživanja izvršena su u periodu 1980–1982. ali samo na malom prostoru krajnjeg jugoistočnog dela vulkanskog kompleksa.U Leckom vulkanskom kompleksu dominiraju andezitske stene i njihovi piroklastiti.Smatra se ...
    vulkanski kompleks, mineragenetske karakteristike, juvelirski mineralni resursi, nalazišta, potencijalnost, kvarc, ametist, ahat, kalcedon, jaspis, prognoza
    ... 325-336. Flörke, O.W., Köhler-Herbertz, B., Langer, K. and Tönges, I. Water in microcrystalline quartz of volcanic origin: Agates. Contributions to Mineralogy and Petrology, 80, (1982) p. 324- 333. Flörke O.W., Graetsch H., Martin B., Röller K., Wirth R., Nomenclature of micro- and non- crystalline ...
    ... Occurrence and distribution of “moganite” in agate/chalcedony: a combined micro-Raman, Rietveld, and cathodoluminescence study, Contribution to Mineralogy and Petrology 133, 1998, p. 96-105. Götze J., Tichomirowa M., Fuchs H., Pilot J. Sharp D.Z., Geochemistry of agates: a trace element and stable ...
    ... Chemical Geology 175, pp. 523–541, 2001. Graetsch H., Structural characteristics of opaline and microcrystalline silica minerals, Reviews in Mineralogy and Geochemistry, Vol. 29, Washington, 1994, p. 209-232. Graetsch H. A., Grünberg J. M., Microstructure of flint and other chert raw materials ...