Претрага
399 items
-
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... calculated from XRPD data according to [14]. Impurities were determined as an averagjee of 15 SEM-EDS analyses. Location/ k i k o i3 at.% As Impurities [at.%] Sample a[A] biA] c[A] |: 0| VIA*] duui (XRPD) (SEM-EDS) Rudnik Rud05/1 5.748(2) 5.680(2) 5.778(2) 112.09(1) 174.8(1) 1.63207(6) 33.346(1) / 39 ...
... in which arsenopyrite is one of the most abundant sulphide phases. 2.1. Scanning Electron Microscopy and Energy Dispersive X-ray Spectroscopy (SEM-EDS) The arsenopyrite samples from the polymetallic Šumadija-Kopaonik ore district were first analysed by scanning, electron microscope (SEM, JSM-6610LV ...
... operating, at 20 kV to determine their homogeneity and mineral association; their composition was analysed by energy-dispersive X-ray spectrometry (EDS, X-Max, Oxford Instruments PLC, Abingdon, UK), using internal standards with detection limit ~0.1 wt.%. Simultaneously, the homogeneity and possible ...Ivana Jelić, Aleksandar Pačevski, Aleksandar Kremenović, Aleš Šoster, Andreja Šestan, Janez Zavašnik. "Crystallography and Surface Oxidation of Stoichiometric Arsenopyrite from Šumadija-Kopaonik Pb-Zn/Polymetallic Ore District (Serbia)" in Crystals, MDPI AG (2023). https://doi.org/10.3390/cryst13020278
-
Understanding the effect of synthesis and sintering temperature on the functional properties of barium titanate/cobalt ferrite composites
Marija Šuljagić, Aleksandar Kremenović, Ivan Petronijević, Adis Džunuzović, Miljana Mirković, Vladimir Pavlović, Ljubica Anđelković (2023)To investigate the effect of synthesis procedure and sintering temperature on the functional properties of perovskite/spinel ceramics, BaTiO3/CoFe2O4 composites were prepared by thermal decomposition, coprecipitation, and microemulsion method, and sintered at 1150°C and 1300°C. The phase composition and morphology of as-prepared powders as well as sintered ceramics were thoroughly examined by X-ray powder diffraction (XRPD) and scanning electron microscopy (SEM) coupled with electron dispersive spectroscopy (EDS). The dielectric and ferroelectric measurements were performed in detail. Generally, the ...Marija Šuljagić, Aleksandar Kremenović, Ivan Petronijević, Adis Džunuzović, Miljana Mirković, Vladimir Pavlović, Ljubica Anđelković. "Understanding the effect of synthesis and sintering temperature on the functional properties of barium titanate/cobalt ferrite composites" in Science of Sintering (2023). https://doi.org/10.2298/SOS220512013S
-
Uticajni činioci na otvranje i obezbeđenje vertikalnih okana sa kritičkim osvrtom na naučna dostignuća u ovoj oblasti
Milorad Jovanović (1972)Milorad Jovanović. Uticajni činioci na otvranje i obezbeđenje vertikalnih okana sa kritičkim osvrtom na naučna dostignuća u ovoj oblasti, Beograd:Rudarsko-geološki fakultet, 1972
-
Porfirska rudišta bakra u reonu Dumitri potok – Valja Strž
Milorad Jovanović (1974)Milorad Jovanović. Porfirska rudišta bakra u reonu Dumitri potok – Valja Strž, 1974
-
Petrološke i teohemijske karakteristike bazaltoidnih stena Rudnika i Kopaonika
Milivoje Jovanović (1995)Milivoje Jovanović. Petrološke i teohemijske karakteristike bazaltoidnih stena Rudnika i Kopaonika, Beograd:Rudarsko-geološki fakultet, 1995
-
Uticaj geološke sredine na izbor i primenu tehnologije iskopa podzemnih objekata
Božidar Jovanović (1988)Božidar Jovanović. Uticaj geološke sredine na izbor i primenu tehnologije iskopa podzemnih objekata, Beograd:Rudarsko-geološki fakultet, 1988
-
Korelacija uslova peletizacije i kvaliteta peleta flotacijskog koncentrata fluorita
Vladimir Jovanović (2000)Vladimir Jovanović. Korelacija uslova peletizacije i kvaliteta peleta flotacijskog koncentrata fluorita, Beograd:Rudarsko-geološki fakultet, 2000
-
Karakteristike sedimenata upletenih reka formacije klastiti Kladnice
Radmilo Jovanović (1993)Radmilo Jovanović. Karakteristike sedimenata upletenih reka formacije klastiti Kladnice, Beograd:Rudarsko-geološki fakultet, 1993
-
Stratigrafske i paleoekološke karakteristike badenske faune okoline Golupca
Gordana Jovanović (1994)Gordana Jovanović. Stratigrafske i paleoekološke karakteristike badenske faune okoline Golupca, Beograd:Rudarsko-geološki fakultet, 1994
-
Sinteza Portland-cementnog klinkera sa elektrofilterskim pepelom termoelektrane Nikola Tesla" kao sirovinskom komponentom"
Nataša Jovanović (2008)Nataša Jovanović. Sinteza Portland-cementnog klinkera sa elektrofilterskim pepelom termoelektrane Nikola Tesla" kao sirovinskom komponentom", Beograd:Rudarsko-geološki fakultet, 2008
-
Model strateškog odlučivanja o nivou proizvodnje u podzemnom rudniku olova i cinka
Saša Jovanović (2008)Saša Jovanović. Model strateškog odlučivanja o nivou proizvodnje u podzemnom rudniku olova i cinka, Beograd:Rudarsko-geološki fakultet, 2008
-
Prilog proučvanju fizičko-mehaničkih osobina domaćih ugljeva i njihovoj tehničkoj klasifikaciji
Petar Jovanović (1964)Petar Jovanović. Prilog proučvanju fizičko-mehaničkih osobina domaćih ugljeva i njihovoj tehničkoj klasifikaciji, Beograd:Rudarsko Geološki Fakultet, 1964
-
Savremeni principi inženjerskogeološke klasifikacije stena
Vojislav Jovanović (1974)Vojislav Jovanović. Savremeni principi inženjerskogeološke klasifikacije stena, Beograd:Rudarsko Geološki Fakultet, 1974
-
Facijalna obeležja vulkanogeno-sedimentnih tvorevina gornje krede u Metohiji - Kosmet
Žarko Jovanović (1965)Žarko Jovanović. Facijalna obeležja vulkanogeno-sedimentnih tvorevina gornje krede u Metohiji - Kosmet, Beograd:Rudarsko Geološki Fakultet, 1965
-
Geneza pretortonskih miocenskih sedimenata na prostoru severne Bosne između Une i Drine
Časlav Jovanović (1979)Časlav Jovanović. Geneza pretortonskih miocenskih sedimenata na prostoru severne Bosne između Une i Drine, Beograd:Rudarsko Geološki Fakultet, 1979
-
Sedimentološke karakteristike i rekonstrukcija depozicionih sredina paleozojskih tvorevina u zapadnom delu Jadarske oblasti
Divna Jovanović (1992)Divna Jovanović. Sedimentološke karakteristike i rekonstrukcija depozicionih sredina paleozojskih tvorevina u zapadnom delu Jadarske oblasti, Beograd:Rudarsko Geološki Fakultet, 1992
-
Petrologija mezozojskih vulkanita planine Bobije kod Ljubovije
Velimir Jovanović (1994)Velimir Jovanović. Petrologija mezozojskih vulkanita planine Bobije kod Ljubovije, Beograd:Rudarsko Geološki Fakultet, 1994
-
Kontinentalni donjotrijaski crveni slojevi zapadne Srbije
Radmilo Jovanović (1995)Radmilo Jovanović. Kontinentalni donjotrijaski crveni slojevi zapadne Srbije, Beograd:Rudarsko Geološki Fakultet, 1995
-
Single and multi-phase inclusions in garnets from the Lešnica alluvion in the Internal Dinarides, Serbia
Maja Milošević, Bojan Kostić (2021)... wereexamined optically by petrographic methods followed by SEM-EDS method, applied for thechemical analyses of the individual inclusion, and LA-ICP-MS applied to determine distribution andcontent of trace elements in the host garnet. Results from SEM-EDS method show that garnets are of the spessartine-almandine ...Maja Milošević, Bojan Kostić. "Single and multi-phase inclusions in garnets from the Lešnica alluvion in the Internal Dinarides, Serbia" in EGU Assembly 2021, Copernicus GmbH (2021). https://doi.org/10.5194/egusphere-egu21-2423
-
Refinement of waste phosphogypsum from Prahovo, Serbia: characterization and assessment of application in civil engineering
Josip Išek, Lazar Kaluđerović, Nikola Vuković, Maja Milošević, Ivana Vukašinović, Zorica Tomić (2020)... was subjected only to chem- ical characterization using scanning electron microscopy with energy-dispersive spectrometry (SEM-EDS). Scanning electron microscopy SEM-EDS analysis was performed using a JEOL JSM-11300 SEM coupled with an Oxford Instruments XMax 50 mm? silicon drift detector ener ...
... analysis, in accordance with the low levels of impurities obtained using SEM-EDS and ICP-OES elemental ana- lyses. Specifically, in the PGIP sample, Al, Si and P calculated as oxides by stoichiometry amount to 1.02 wt.% in SEM-EDS ana- lysis. In addition, 10 trace elements in ICP-OES 5analysis (Table ...
... Na, Mg, Al, K, Ti, Fe, Sr and Ba in raw phosphogypsum (total 0.24 wt.% as oxides). The SEM-EDS, Josip |. Išek et al. Table 2. Chemical compositions (wt.%) of the samples investigated, obtained by SEM-EDS analysis. Elements PG1 PG2 PGIR PG1P o 47.07 46.99 51.65 46.69 F BDL BDL 0.56 BDL Na ...Josip Išek, Lazar Kaluđerović, Nikola Vuković, Maja Milošević, Ivana Vukašinović, Zorica Tomić. "Refinement of waste phosphogypsum from Prahovo, Serbia: characterization and assessment of application in civil engineering" in Clay Minerals, Cambridge University press (2020). https://doi.org/10.1180/clm.2020.11