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Упит dcterms_subject_txt:žični serpentinski minerali

479 items

  • Geološke karakteristike nalazišta juvelirskih mineralnih sirovina Šumadijskog mineragenetskog rejona

    Lidja Marčeta (2005)
    Geološke karakteristike, juvelirski minerali, Šumadija

  • Efikasnost različitih tipova glina Srbije za adsorpciju metilen plavog

    Maja Milošević D. (2016)
    minerali glina, metilen plavo, difuzna refleksija, adsorpcija, flokulacija

  • An update on the mineral-like Sr-containing transition metal arsenates

    Tamara Đorđević, Ljiljana Karanović (2021)
    We report on the crystal structures of three novel synthetic SrM-arsenates (M = Ni and Fe3+), isostructural or structurally related to the minerals from tsumcorite, carminite and brackebuschite groups. They were synthesised under mild hydrothermal conditions and further characterised using single-crystal X-ray diffraction (SXRD), scanning electron microscopy with energy dispersive spectroscopy (SEMEDS) and Raman spectroscopy. SXRD and SEM-EDS yielded formulae: (I) SrNi2(AsO4)2·2H2O, (II) Sr1.4Fe3+ 1.6(AsO4)2(OH)1.6 and (III) SrFe3+(AsO4)(AsO3OH). All three structures are built up of slightly distorted MO6 octahedra ...
    арсенати метала, кристална структура, дифракција рендгенских зрака на монокристалима, хидротермална синтеза, Раманова спектроскопија, релевантна једињења у животној средини, арсенeochemistry and Petrology

  • Mineralno-sirovinska baza SAP Kosovo kao faktor privrednog razvoja i njena kompleksna geološko-ekonomska ocena

    Petar Radičević (1975)
    Minerali, SAP Kosovo

  • Crystallography and Surface Oxidation of Stoichiometric Arsenopyrite from Šumadija-Kopaonik Pb-Zn/Polymetallic Ore District (Serbia)

    Ivana Jelić, Aleksandar Pačevski, Aleksandar Kremenović, Aleš Šoster, Andreja Šestan, Janez Zavašnik (2023)
    The behaviour and stability of arsenopyrite largely depend on its crystal structure, but studies of crystallography and structural defects are scarce. For clarification, we investigated a series of natural arsenopyrite crystals from the polymetallic Pb-Zn-(±Cu,Ag,Au,Sb,Bi,W) Šumadija-Kopaonik ore district (Serbia) by powder X-ray diffraction (XRPD). Among them, samples from the Drenjak gold mineralisation showed near-stoichiometric FeAsS composition and were further investigated by conventional and high-resolution transmission electron microscopy methods. TEM revealed abundant planar crystallographic defects and epitaxial surface oxide layer ...
    Inorganic Chemistry, Condensed Matter Physics,General Materials Science, General Chemical Engineering, crystal structure, FeAsS, oxidation, TEM, XRPD
    ... Air. Mineral. Petrol. 1998, 62, 123-144. [CrossReft] Crystals 2023, 13, 278 l1of1l 24. 25. 26. 27. 28. Schaufuss, A.G.; Nesbitt, H.W.; Scaini, M.J.; Hoechst, H.; Bancroft, M.G.; Szargan, R. Reactivity of Surface Sites on Fractured Arsenopyrite (FeAsS) toward Oxygen. Am. Mineral. 2000 ...
    ... FeAsS; crystal structure; oxidation; XRPD; TEM 1. Introduction Arsenopyrite (FeAsS) is worldwide abundant natural sulphide, common in various mineral deposit types [1]. Arsenopyrite can incorporate significant amounts of metal ions, such as gold, cobalt, and nickel, either accommodated in the crystal ...
    ... so- lution or as micro-inclusions [2,3]. In particular, the ability of the Au incorporation renders arsenopyrite an economically relevant ore mineral and is the main reason for the extensive industry-driven research. Subjected to exploration and mining activities, arsenopyrite is also one of ...

  • Lamprofiri Kolaričke reke (Boranja)

    Luka Jović (2024)
    Lamprofiri su grupa egzotičnih ultrakalijskih stena poznatih po sadrţaju nekompatibilnih elemenata i elemenata retkih zemalja. U našem delu sveta pojavljuju se u okviru ultrakalijskih provincija u Španiji, Italiji, Srbiji, Makedoniji i Turskoj. U Srbiji su zastupljeni ponajviše u zapadnim delovima zemlje, oko opština Ljubovija i Mali Zvornik, ali i u široj okolini Rudnika, Kopaonika i u istočnoj Srbiji. Mnoga ispitivanja sprovedena su u rudnom polju Veliki Majdan u zapadnoj Srbiji sa čije jugoistočne strane protiče Kolarička reka. Ovaj lokalitet ...
    geohemija, lamprofiri, ultrakalijski magmatizam, elementi retkih zemalja, mešanje magmi, mineta, kersantit, flogopit
    ... Granodiorit Boranje mineraloški se sastoji od kvarca, plagioklasa, kalijskih feldspata, biotita i amfibola. Akcesorni minerali su sfen, apatit, alanit, cirkon, epidot i metalični minerali. Struktura Je neravnomerno zrnasta. Ovi granodioriti, naravno, izvršili su kontaktni metamorfizam na ostale stene ...
    ... alotriomorfnom osnovnom masom, i podređeno augit. Feldspati u Osnovnoj masi su izmenjeni. Takođe se zapažaju diseminacije metaličnog minerala. Od akcesornih minerala zapaženi su apatit ı magnetit, a od sekundarnih kalcit i hlorit. 2.2.9 Kvartar U sevemom i severoistočnom delu lista u kvartaru ...
    ... je od flogopita, biotita ı plagioklasa, sa sekundarnim kalcitom, hloritom, amfibolom i hidroksidima gvožđa. Akcesorni minerali su predstavljeni kvarcem i metaličnim mineralima. Struktura stene je hipokristalasto-porfirska i afirska, sa elementima serijalne i sa sitastom strukturom. U osnovnoj ...

  • Lokacijsko-alokacijski model optimalnog planiranja rudarkih proizvodnih objekata na makro nivou u industriji nemetaličnih mineralnih sirovina

    Aleksandar Simić (1998)
    Optimalno planiranje, rudarski proizvodni objekti, nemetalični minerali

  • Mineralni i hemijski sastav čestica u atmosferi zone Kolubarskog basena i uticaj na životnu sredinu

    Željko Cvetković (2013)
    Mineral, čestica, aerosediment, Kolubara, leteći pepeo.

  • Replica of the “Great Triangle Gold Nugget” Belonging to Belgrade University Collection, Gilded or Not?

    Alena Zdravković, Maja Milošević, Ivana Jelić (2021)
    ... the “Great Triangle Gold Nugget” Belonging to Belgrade University Collection, Gilded or Not? | Alena Zdravković, Maja Milošević, Ivana Jelić | 8th Mineral Sciences in the Carpathians Conference, Acta Mineralogica-Petrographica, Miskolc, Hungary | 2021 | | http://dr.rgf.bg.ac.rs/s/repo/item/0005499 Дигитални ...
    ... publications. - The Repository is available at: www.dr.rgf.bg.ac.rs Acta Mineralogica-Petrographica, Abstract Series, Szeged, Vol. 11, 2021 55 8th Mineral Sciences in the Carpathians Conference, May 13–14, 2021, Miskolc, Hungary REPLICA OF THE “GREAT TRIANGLE GOLD NUGGET” BELONGING TO BELGRADE UNIVERSITY ...
    ... in Moscow, Russia, Kremlin. The gold nugget replica, which is kept today in the Collection of Rocks and Minerals, is part of old and numerous mineral collection which numbered 1525 samples donated by the St. Petersburg’s State Mining Institute of the empress Catherine II (precursor of Saint ...

  • Possible problems in mining industry of Serbia

    Jelenković Rade (2012)

  • Uticaj geološke neizvesnosti u razvoju rudarskih projekata

    Petar Marković, Dejan Stevanović, Mirjana Banković (2023)
    Rudarstvo je industrija koja se nosi sa različitim vrstama neizvesnosti i rizika zbog svoje prirode i specifičnosti. Neizvesnost u rudarstvu može poticati iz različitih izvora i uticati na različite aspekte rudarskih projekata. Kao jedan od dominantnih faktora, ističe se geološka neizvesnost. Geološka neizvesnost igra ključnu ulogu u rudarstvu i može značajno uticati na procenu resursa i rezervi, planiranje eksploatacije, ekonomsku isplativost i upravljanje rizicima. Ova neizvesnost se ne može eliminisati, ali se uz primenu adekvatnih standarda i zakona može ...
    ... sisteme izveštavanja: JORC Code, NI 43-101, PERC Code i dr.), [11 (CIM Definition Standards For Mineral Resources and Mineral Reserves, 2014) (Australasian Code for Reporting of Exploration Results, Mineral Resources and Ore Reserves (The JORC Code), 2012)|. Na žalost, predmetni Zakon ove pojmove nije ...
    ... Integrating joint multi-element geological uncertainty. Journal of Mining Science , 49, 68-81. [4] (2014). CIM Definition Standards For Mineral Resources and Mineral Reserves. Canadian Institute of Mining, Metallurgy and Petroleum. [5] Dimitrakopoulos R. (2018). Advances in Applied Strategic Mine ...
    ... Metallurgy , 3, 82-88. [7] Edwards A.C. (2001). Mineral resource and ore reserve estimation : the AusiIMM guide to good practice. Australasian Institute of Mining and Metallurgy. [8] Emery X., Ortiz J., Rodriguez J. (2006). Quantifying Uncertainty in Mineral Resources by Use of Classification Schemes ...

  • Determination mechanical properties of cement stone for permanent tightness cemented annulus

    Bošković Zvonimir, Čebašek Vladimir, Nuhanović Sanel, Crnogorac Jovana (2014)

  • Deformation and permeability of cement stone of diferent composition in hard formations

    Bošković Zvonimir, Čebašek Vladimir, Nuhanović Sanel, Crnogorac Jovana (2014)

  • Deformation and permeability of cement stone of diferent composition in soft to medium hard formations

    Bošković Zvonimir, Čebašek Vladimir, Nuhanović Sanel, Crnogorac Jovana (2014)

  • Landslide Susceptibility Zonation in The Kolubara River Basin (Western Serbia) – Analisys of Input Data

    Dragićević Slavoljub, Carević Ivana, Kostadinov Stanimir, Novković van., Abolmasov Biljana, Milojković Branko, Simić Dušan (2012)

  • Hidrogeohemija prirodnih radioaktivnih elemenata u podzemnim vodama Srbije

    Marina D. Ćuk (2018-02-23)
    Osnovni cilj doktorske disertacije predstavljao je definisanje prirodnih koncentracija (engl. background values) U, Th, i K u podzemnim vodama, i definisanje hidrogeohemijskih uslova koji utiču na distribuciju navedenih elemenata u podzemnim vodama...
    prirodni radioaktivni elementi, podzemna voda, geohemijske sredine, hidrogeohemijski uslovi, neparametarska statistička analiza, logistički model, hidrohemijsko modeliranje
    ... 3.). Tabela 6.3. Izračunate vrednosti indeksa zasićenja za odabrane minerale MINERALI Indeks zasićenja (SI) KARBONATNI MINERALI Min Max Kalcit CaCO3 -1.7 1.3 Dolomit CaMg(CO3)2 -3.1 3.8 SILIKATNI MINERALI Plagioklas Albit NaAlSi3O8 -3.9 3.18 Feldspati K-Feldspat KAlSi3O8 ...
    ... i drugi silikatni minerali se odlikuju velikom otpornošću, međutim ovi minerali ipak podležu procesima raspadanja, što dovodi do migracije kalijuma u podzemne vode. Kalijumova jedinjenja se rastvaraju u vodama u širokom opsegu pH i Eh vrednosti, međutim sorpcija na mineralima glina znatno smanjuje ...
    ... Izdvajaju se tri ključna perioda u formiranju ove mineralizacije: formiranje primarnih uranovih minerala u magmatskim stenama, alteracija i mobilizacija formiranih minerala, i formiranje sekundarnih minerala urana u sedimentim stenama donje jure koji leže transgresivno i diskordantno preko granitoida ...

  • Distribution of major and trace elements in the Kovin lignite (Serbia)

    Dragana Životić, Olga Cvetković, Predrag Vulić, Ivan Gržetić, Vladimir Simić, Konstantin Ilijević, Biljana Dojčinović, Suzana Erić, Bogdan Radić, Sanja Stojadinović, Snežana Trifunović (2019)
    geochemical and mineralogical study was performed on lignite samples from the Upper Miocene Kovin deposit, hosting three coal seams. The Kovin lignite is characterized by high moisture content, medium to high ash yield, medium to high sulphur content and a relatively low gross and net calorific value. The mineralogical composition, and major and trace element contents were determined by X-ray diffraction, scanning electron microscopy with energy dispersive Xray spectroscopy (SEM-EDS) analyses, and inductively coupled plasma optical emission spectrometry (ICP-OES). ...
    General Earth and Planetary Sciences, General Environmental Science
    ... 89% in all samples. 4.3. Mineralogy The Kovin lignite is characterized by medium (10–30%) to very high (>50%) mineral matter contents. XRD analyses of lignite ashes show that mineral matter in the coal seam I (Table 3; Figs. 2, 3; Table S­II of the Supplementary material; Figs. S1, S2 of the S ...
    ... parameters for individual samples are given in Table S-III of the Supplementary material to this paper. Table 4. Mineral composition of the Kovin lignite, based on data from SEM-EDS. Mineral phases Content I seam II seam III seam Sulphides Pyrite Sphalerite Galena m m m m m Sulphate Gypsum/Anhydrite ...
    ... m m M M m m m M m m M m M m M m Carbonates Calcite Siderite Dolomite Ankerite M M m m m M Phosphate Monazite m m M–major mineral (>1 vol.%); m–minor mineral (<1 vol.%) G eo lo g ia C ro a ti ca Geologia Croatica 72/158 Figure 4. SEM backscatter images with EDS data of minerals; a) ...

  • Mineral Resources of Serbia: Environmental, Societal and Economic Challenges

    Vladimir Simić, Rade Jelenković, Dragana Životić (2019)
    ... In Serbia, all mineral resources (including: coal, mineral water, therapeutic muds and geothermal resources) and hydrocarbon resources are property of the state. Consequently, legislation for the mineral industry is predominantly defined on the state level. Keywords: mineral resources, development ...
    ... during the Miocene. MINERAL RESOURCES OF SERBIA There are more then 5000 mineral deposits and mineral occurrences in the territory of Serbia (Jankovic et al. 2003; Jelenković et al. 2008; Jelenković & Mijatović, 2014; WEB GIS Mining and Geology; Figure 2). Metallic Mineral Resources: Commodities ...
    ... territory of Serbia, exploration level regarding mineral deposits, available measured and indicated mineral resources and ore reserves, quality and grade of mineral commodities etc.; • „Mining-technical parameters of exploitation and processing of mineral commodities in existing and newly discovered ...

  • Navigacija budućnosti: poslovni rizici i prilike u rudarskoj industriji

    Petar Marković, Dejan Stevanović, Mirjana Banković, Vuk Lazić (2024)
    Sektor rudarstva i metalurgije se globalno suočava sa brzo evoluirajućim okruženjem u 2024. godini, koje karakteriše jedinstvena međusobna zavisnost rizika i prilika. Sektor je u središtu globalne energetske tranzicije, uz rastuću potražnju za kritičnim mineralnim sirovinama poput litijuma, nikla i bakra, koji su od suštinskog značaja za tehnologije obnovljive energije i električna vozila. Međutim, ova sve veća odgovornost donosi brojne izazove, uključujući pojačanu pažnju na ekološke, društvene i upravljačke (ESG) faktore, fizičke i tranzicione rizike uzrokovane klimatskim promenama, i ...

  • Sepiolite – a by-product of exploitation as a potential raw material in Serbian industry

    Radmila Gaćina, Katarina Urošević, Jelena Zakonović (2019)
    This paper gives a brief overview of the sepiolite deposits, the basic properties, and the possibilities of using this mineral. Particular attention is paid to sepiolites from domestic production, especially the use of sepiolites suitable for the development of small businesses and technologies, with a focus on environmental protection. Aim of this paper is to point out importance of this mineral and to draw attention to the use of domestic raw materials. With appropriate mechanical and chemical pretreatments, sepiolite is ...
    sepiolite, by-product, small-scale mine, marginal costs,