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Wyszukujesz frazę "rare elements" wg kryterium: Temat


Wyświetlanie 1-14 z 14
Tytuł:
Lithologically-related rare earth element variations the Mio-Pliocene Poznań Formation (Poland)
Autorzy:
Retka, J.
Powiązania:
https://bibliotekanauki.pl/articles/2059369.pdf
Data publikacji:
2018
Wydawca:
Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:
Poznań Formation
rare earth elements
clay lithotypes
Opis:
Concentrations of rare earth elements (REEs) were determined in 129 clay samples collected from the Mio-Pliocene Poznań Formation in Poland. The REEs occur in a relatively wide range from 58.2 to 1,709 mg/kg. Low North American Shale Composite (NASC)-normalized total REE contents with heavy rare earth element (HREE) depletion were noted in most of the samples analysed. Small variations were detected in the REE contents in the lithologies distinguished. Red clays are characterised by slightly lower REE concentrations relative to green and grey clays. All the Poznań Formation clays exhibit a negative Eu anomaly when normalized to the average of chondrites. Values increase according to the following sequence: grey clays < red clays < green clays. The NASC-normalized REE concentration curves show a positive Eu anomaly. The LaNASC/YbNASC ratio indicates HREE depletion. A small variation in this ratio was observed in the sequence green clays > grey clays > red clays. The variability of the REE contents of the Poznań Formation decreased from west to east.
Źródło:
Geological Quarterly; 2018, 62, 1; 146--154
1641-7291
Pojawia się w:
Geological Quarterly
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Controls on the distribution of rare earth elements in the Kupferschiefer series of SW Poland
Autorzy:
Oszczepalski, S.
Chmielewski, A.
Mikulski, S.
Powiązania:
https://bibliotekanauki.pl/articles/2060523.pdf
Data publikacji:
2016
Wydawca:
Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:
rare earth elements (REE)
redistribution
Kupferschiefer
Zechstein
SW Poland
Opis:
This study deals with the spatial distribution and the PAAS-normalized patterns of rare earth elements (REE) studied by ICP-MS in the Kupferschiefer series of SW Poland. The most characteristic feature is a progressive enrichment in REE content (including Y and Sc) outward from the rocks with pyritic and Pb-Zn mineralisation, across the rocks with copper mineralisation, towards the oxidized (Rote Fäule) areas. The same trend can also be observed with respect to LREE, MREE and HREE. Whereas REE distribution diagrams for shales with pyrite and Pb-Zn mineralisation are almost flat, diagrams for shales with hematite and copper mineralisation are convex-upward and the strongest convexity is attributed to the transition from hematitic alteration to copper-rich rocks. REE distribution diagrams normalized to PAAS show strong MREE enrichment relative to LREE and HREE, which is typically the highest in the hematite zone, lower in shale with copper mineralisation, and the lowest in shales with Pb-Zn and pyrite mineralisation. The systematic increase in the concentration of REE towards the Rote Fäule, and the strong enrichment in MREE in the transition zone are indicative of variable intensity of leaching and formation of the REE enrichments (including MREE) by MREE>HREE>LREE fluids, as evidenced by the MREE-enriched signatures. Overprinting of secondary enrichments over the original REE pattern due to redistribution along the pathways of expanding fluids are postulated to account for the apparent differences in the distribution and concentration of REE (including the MREE-enriched trend) between the oxidized rocks, copper-bearing rocks, and reduced lithologies barren in copper.
Źródło:
Geological Quarterly; 2016, 60, 4; 811--826
1641-7291
Pojawia się w:
Geological Quarterly
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The stability of xenotime in high Ca and Ca-Na systems, under experimental conditions of 250–350°C and 200–400 MPa : the implications for fluid-mediated low-temperature processes in granitic rocks
Autorzy:
Budzyń, B.
Kozub-Budzyń, G. A.
Powiązania:
https://bibliotekanauki.pl/articles/2060298.pdf
Data publikacji:
2015
Wydawca:
Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:
xenotime
yttrium fluorapatite
yttrium silicate
rare earth elements (REE)
experimental petrology
Opis:
he stability of xenotime was tested by experiments in the presence of a silicate mineral assemblage and two different fluids, 2M Ca(OH)2 or Na2Si2O5 + H2O, under P-T conditions of 200-400 MPa and 250-350°C. The xenotime was stable in runs with 2M Ca(OH)2, replicating the low-temperature metasomatic alterations of granitic rocks, except in experiment at 350°C and 400 MPa, where some (Y,REE)-rich fluorapatite formed. Experiments with Na2Si2O5 + H2O resulted in significant xenotime alteration and partial replacement by an unknown (Y,HREE)-rich silicate, and in the formation of minor amounts of (Y,REE)-rich fluorapatite. The latter indicate preferential partitioning of Y and REE into silicates over phosphates during low-temperature, metasomatic processes in a high Na-Ca system, similar to peralkaline granitic rocks.
Źródło:
Geological Quarterly; 2015, 59, 2; 316-324
1641-7291
Pojawia się w:
Geological Quarterly
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Geochemiczno-mineralogiczne badania koncentracji pierwiastków rzadkich i towarzyszących w obrębie mineralizacji kasyterytowo-siarczkowej w paśmie łupkowym Starej Kamienicy w Sudetach Zachodnich – wyniki wstępne
Geochemical-mineralogical research of the rare and associated element concentrations within cassiterite-sulphide mineralization in the Stara Kamienica schist belt in the Western Sudetes - preliminary results
Autorzy:
Małek, Rafał
Mikulski, Stanisław, Z.
Powiązania:
https://bibliotekanauki.pl/articles/2075983.pdf
Data publikacji:
2019
Wydawca:
Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:
pierwiastki rzadkie
kasyteryt
siarczki
mineralizacja rudy
zasoby rudy
Sudety
rare elements
cassiterite
sulfides
ore mineralization
ore deposit
Sudetes
Opis:
Abstract. The main task of research was to quantitatively and qualitatively identify rare and associated elements that occur within a cassiterite-sulphide mineralization zone hosted Precambrian - Lower Paleozoic metamorphic rochi in the Stara Kamienica schist belt making up the part of the Izera-Karhonosze Massif. Over 70 samples from archive boreholes and abandoned Sn-ore mines were examined using modern methods like portable pXRF, geochemical analysis (ICP-MS, WD-XRF, GF-AAS), polarizing microscopy, electron microprobe analysis (EMPA) and scaning electron microscopy with EDS system (SEM-EDS). Preliminary results show interesting concentrations of associated elements such as Zn (max 0.56%), Pb (max 0.7%), Cu (max 0.33%), As (max 0.55%), and some rare elements like In, Re, Nb, Co, Bi, Pt, V, La and Ce.
Źródło:
Przegląd Geologiczny; 2019, 67; 179--182
0033-2151
Pojawia się w:
Przegląd Geologiczny
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Chemical and morphological characterization of polymetallic (Mn-Fe) nodules from the Clarion-Clipperton Zone in the Pacific Ocean
Autorzy:
Kozłowska-Roman, Agata
Mikulski, Stanisław
Powiązania:
https://bibliotekanauki.pl/articles/2058694.pdf
Data publikacji:
2021
Wydawca:
Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:
polymetallic nodules
critical elements
rare earth elements
deep-sea mining
Clarion-Clipperton Fracture Zone
Pacific
Opis:
Geochemical studies (WD-XRF, ICP-MS, and GF-AAS) have shown that polymetallic nodules from the eastern Clarion-Clipperton Zone (CCZ) in the Pacific Ocean are enriched in several metals such as Cu (mean 1.16%), Ni (1.15%), Co (0.15%), and Zn (0.14%), as well as remarkable contents of Mo (0.059%), V (0.04%), Ce (0.019%), Nd (0.011%), Li (0.015), and Pt (43 ppb). The average content of REE, together with Y and Sc, is 620 ppm. In nodules from the CCZ metal concentrations are often much higher than those reported in nodules from other ocean basins in the world. The bulk-nodule mean value of the Mn/Fe ratio is 5.3, which is characteristic for a mixed (hydrogenetic and diagenetic) origin of the nodules. Microprobe investigation revealed two different chemical compositions of the layers, and ascertained their general metal content. The nodules analyzed are composed mainly of concentric-collomorphic laminae of Mn and Fe (oxy)hydroxides which crystallized around mineral nuclei (e.g., quartz, clay minerals), bioclasts or rock fragments. They are from 3.3 to 7.6 cm in diameter. The chemical and physical properties of the laminae allowed distinction of two genetic types: hydrogenetic and diagenetic. Those formed as a result of hydrogenesis had increased values of Co, Si, Cl and S, while formed diagenetically showed increased levels of Cu, Ni, Mg, Zn and K. These lamina types are characterized by different growth structures, reflectivity, density and Mn/Fe ratios. The ratio of the diagenetic layers to hydrogenetic layers (192/53) in representative polymetallic nodules shows that the nodules of this study are of mixed hydrogenetic-diagenetic type. A mixed genesis was also shown by discriminant diagrams, with these CCZ samples being located at the transition between typical hydrogenetic and diagenetic fields.
Źródło:
Geological Quarterly; 2021, 65, 4; 177--194
1641-7291
Pojawia się w:
Geological Quarterly
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Rare earth elements distribution in fine-grained deposits from the uppermost Triassic and Lower Jurassic of the Polish Basin : provenance and weathering of source area
Autorzy:
Brański, P.
Mikulski, S. Z.
Powiązania:
https://bibliotekanauki.pl/articles/2059878.pdf
Data publikacji:
2016
Wydawca:
Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:
rare earth elements (REE)
provenance
palaeoweathering
uppermost Triassic
Lower Jurassic
Polish Basin
Opis:
Nineteen samples of uppermost Triassic and Lower Jurassic claystones and mudstones, which were formed in the epicontinental Polish Basin, were analysed by inductively coupled plasma mass spectrometry (ICP-MS) for rare earth elements (REE) and other selected trace elements (Sc, Y, Th, Zr and U). The results indicate that the source of most of the claystones and mudstones studied were sedimentary rocks of the upper continental crust of old cratonic areas, where the protolith had a mainly felsic character. However, in the latest Triassic a characteristic layer formed, implying significant input from mafic volcanic protolith. It was also found that moderately intense chemical weathering usually favoured increased concentration of the rare earths. Extremely strong hydrolysis, related to episodes of very hot and humid climate (greenhouse events), caused conspicuous impoverishment in REE in residual clays. Weathering and recycling processes modified the composition of REE to some extent, but generally did not obliterate the original characteristics of the protolith. In some samples, enrichment in rare earth elements was observed, caused by admixtures of accessory minerals (being a main carrier of REE) and/or increased sorting during recycling.
Źródło:
Geological Quarterly; 2016, 60, 2; 441--450
1641-7291
Pojawia się w:
Geological Quarterly
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Pierwiastki ziem rzadkich (REE) w środowiskach powierzchniowych litosfery
Rare Earth Elements (REE) in surface environments of the lithosphere
Autorzy:
Kwecko, P.
Powiązania:
https://bibliotekanauki.pl/articles/2075552.pdf
Data publikacji:
2016
Wydawca:
Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:
pierwiastki ziem rzadkich
REE
gleba
skały
minerały
rare earth elements (REE)
soil
rocks
minerals
Opis:
In the Polish geochemical literature there is no general discussion of the occurrence and behaviour of REE in surface environments. This text is an attempt to review the world literature concerning the REE occurrence and behaviour mainly in rocks, minerals (primary and secondary) and soils, and during hypergenic and soil-forming processes. The article also presents the atomic structure and properties of REE, their divisions and participation in the biosphere, organic matter and sediments of selected Polish lakes and, additionally, anthropogenic sources. Particular attention is given to primary and secondary REE minerals and their presence in rocks, soils (including soil-forming processes) and hypergenic processes. The main source of REE is the primary minerals of acid and siliceous igneous rocks and secondary minerals of sedimentary rocks. Among primary minerals the largest quantities of REE are concentrated in heavy minerals (anatase, ilmenite, sphe- ne, rutile and zircon). Basic silicate weathering leads to the formation of secondary clay minerals which, together with iron and manganese oxides and carbonates, are the main sources of REE as secondary minerals.
Źródło:
Przegląd Geologiczny; 2016, 64, 11; 902--917
0033-2151
Pojawia się w:
Przegląd Geologiczny
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Pierwiastki ziem rzadkich w wybranych złożach surowców ilastych Niżu Polskiego (neogen)
Rare earth elements in selected clay deposits of the Polish Lowland (Neogene)
Autorzy:
Duczmal-Czernikiewicz, A.
Powiązania:
https://bibliotekanauki.pl/articles/2062528.pdf
Data publikacji:
2012
Wydawca:
Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:
pierwiastki ziem rzadkich
złoża iłów
neogen
Niż Polski
rare earth elements (REE)
clay deposits
Neogene
Polish Lowland
Opis:
Przedstawiono zawartość pierwiastków ziem rzadkich w złożach neogeńskich surowców ilastych na obszarze Niżu Polskiego. Ziemie rzadkie zbadano w surowych iłach o barwie czerwonej, zielonej oraz w konkrecjach węglanowych. Na podstawie współczynników korelacji, stwierdzono silną dodatnią korelację ziem rzadkich do itru, słabą do kobaltu i cyrkonu. Lekkie pierwiastki ziem rzadkich (La–Eu) wykazują słabą pozytywną korelację z K2O i MgO. Zawartość ziem rzadkich jest zgodna ze średnią ich zawartością w osadach ilastych, jednak obserwuje się wzbogacenie w lekkie ziemie rzadkie odmiany czerwonej w stosunku do zielonej oraz znaczne wzbogacenie w ciężkie ziemie rzadkie konkrecji węglanowych, w stosunku do otaczających je iłów. Zmiany zawartości pierwiastków ziem rzadkich są wynikiem uziarnienia osadów, składu mineralnego i chemicznego a także procesów wietrzenia i związanych z nimi zmian warunków fizykochemicznych.
The paper presents the content of rare earth elements in the Neogene deposits of clay raw materials in the Polish Lowland. Rare earths have been studied in red and green raw clays, and in carbonate nodules. Based on the correlation coefficients, a strong positive correlation between the rare earths and yttrium, and a weak correlation to cobalt and zirconium were found. Light rare earth elements (La–Eu) show a weak positive correlation to K2O and MgO. The content of rare earths is in line with their average contents in clays and shales, however there is enrichment in a red variety of light rare earths in relation to the green variety, and significant enrichment in heavy rare earths of carbonate nodules in relation to the surrounding claystones. Changes in the content of rare earth elements are the result of sediment grain size, mineralogical and chemical composition, weathering processes and the associated changes of physicochemical conditions.
Źródło:
Biuletyn Państwowego Instytutu Geologicznego; 2012, 448 (2); 419--430
0867-6143
Pojawia się w:
Biuletyn Państwowego Instytutu Geologicznego
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Przegląd głównych minerałów pierwiastków ziem rzadkich : złoto XXI wieku
Review of the major minerals of rare earth elements : gold of the 21st century
Autorzy:
Ryder, P.
Nowak, M.
Powiązania:
https://bibliotekanauki.pl/articles/2075335.pdf
Data publikacji:
2015
Wydawca:
Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:
REE
pierwiastki ziem rzadkich
apatyt
bastnazyt
ksenotym
loparyt
monazyt
rare earth elements (REE)
apatite
bastnäsite
xenotime
loparite
monazite
Opis:
The constant evolution of civilisation and ever more advanced technologies have forced the global economy to search for new and renewable resources. Since the 1950s, rare earth elements (REE) have played an increasingly significant role in the production of new materials. The REE form a group of 17 elements (15 lanthanides, yttrium and scandium) with special properties that distinguish them from the other elements. These unique and essential raw materials have numerous applications nowadays. Without the rare earths, many branches of industry would not be able to function. The main resources of the REE come from the rocks with mineralization enriched in minerals with a higher REO (rare earth oxides) contents. Although there are around 270 different REE-bearing mineral species, the exploitation of the REE refers to less than 10 minerals. Five major REE minerals (the major minerals from group of bastnäsite (bastnaesite), monazite, xenotime, apatite and perovskite (loparite)) are characterized and described. The REO percentage content varies from max. 16% in apatite to max. 79% in bastnäsite. The examples shown were chosen due to their importance and level of extraction. This review-paper has been based on the compilation of data from mineralogical publications, mineralogical data websites and metallurgical articles about the alloys and their compounds.
Źródło:
Przegląd Geologiczny; 2015, 63, 6; 348--362
0033-2151
Pojawia się w:
Przegląd Geologiczny
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Alkaliczna intruzja syenitowa Mławy a perspektywy występowania pierwiastków ziem rzadkich
The Mława syenite alkaline intrusion – a perspective of rare earth elements occurrence
Autorzy:
Krzemińska, E.
Krzemiński, L.
Powiązania:
https://bibliotekanauki.pl/articles/2062609.pdf
Data publikacji:
2012
Wydawca:
Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:
bastnazyt
pierwiastki ziem rzadkich (REE)
intruzje alkaliczne
kraton wschodnioeuropejski
bastnäsyt
rare earth elements (REE)
alkaline intrusion
East European Craton
Opis:
Obecność kilku alkalicznych i alkaliczno-ultramaficznych ciał w obrębie zakrytego podłoża kratonu wschodnioeuropejskiego na obszarze północno-wschodniej Polski była znana od dawna, na podstawie badań geofizycznych, jako wyraźne anomalie Ełku, Pisza, Tajna i Mławy. Jedynie cztery głębokie otwory wiertnicze na peryferiach anomalii Mławy (Płońsk IG 2A/2, Ciechanów 1, Konopki Wielkie 1 i Gradzanowo 2) odsłoniły syenity i kwarcowe syenity. Metaluminowe, bogate w pierwiastki ziem rzadkich (REE) i Zr syenity Mławy są względnie późnym produktem procesów frakcjonowania magmy. Analizy chemiczne w mikroobszarze potwierdziły obecność pierwotnych fluorowęglanów REE (bastnäsyt, parisyt) i obfitość cyrkonu jako faz bogatych w REE i Zr w syenitach. Istotna koncentracja minerałów nośników REE ma genetyczne i przestrzenne związki ze skałami alkalicznymi, dlatego intruzja Mławy powinna być obiektem dalszych badań.
A number of alkaline and alkaline-ultramafic bodies have been known within the hidden basement of the East European Craton (EEC) in north-western Poland for a long time. These are the strong anomalies of Ełk, Pisz, Tajno and Mława identified based on a geophysical survey. Syenite and quartz syenites, were drilled by only four deep boreholes on the periphery of the Mława anomaly (Płońsk IG 2A/2, Ciechanów 1, Konopki Wielkie and Gradzanowo 2). The REE- and Zr-rich Mława metaluminous syenites are relatively late-stage products of fractionation processes. Electron microprobe analyses confirm primary-appearing REE-fluorocarbonate (bastnäsite–parisite) and zircon abundance as major host phases to REE and Zr in the syenites. A significant concentration of the REE-bearing minerals shows a genetic and spatial relation to an alkaline rocks, therefore the Mława igneous bodies should be the subject of further investigations.
Źródło:
Biuletyn Państwowego Instytutu Geologicznego; 2012, 448 (2); 401--407
0867-6143
Pojawia się w:
Biuletyn Państwowego Instytutu Geologicznego
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Dolnokredowe fosforyty z NE obrzeżenia Gór Świętokrzyskichjako potencjalne źródło REE : badania wstępne
Lower Cretaceous phosphorites from the NE marginof the Holy Cross Mountains as a potential source of REE : preliminary study
Autorzy:
Zglinicki, Karol
Szamałek, Krzysztof
Salwa, Sylwester
Górska, Irena
Powiązania:
https://bibliotekanauki.pl/articles/2076076.pdf
Data publikacji:
2020
Wydawca:
Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:
rzadkie elementy ziemi
fosforyt
frankolit (CAF)
pseudoguzki
Góry Świętokrzyskie
rare earth elements
phosphorite
francolite (CAF)
pseudonodules
Holy Cross Mountains
Opis:
The PGI-NRI conducts geological research on the documentation of occurrence of REE deposits in Poland. The deposit potential may be related to the formation of Lower Cretaceous phosphorites from the NE margin of the Holy Cross Mountains. Two phosphorite deposits were exploited in this region in the past: Chałupki (1936-1959) and Annopol (1952-1970). From the Chałupki old mine dump, 34 samples of fine-grained sand were collected. The pseudonodules were extracted from this sand. The sand from the dump is composed of quartz, francolite (carbonate-rich fluorapatite) Ca5(PO4,CO3)3F, illite and a small amount of feldspar, calcite and heavy minerals. The heavy fraction is composed of zircon, monazite and rutile. Sand has a low content of REE ranging from 47.56 to 185.26ppm. The phosphorite pseudonodules underwent a detailed mineralogical and chemical analysis. They are composed of francolite, quartz, illite, glauconite, feldspar and minor heavy minerals: zircon and monazite. For the first time, the whole spectrum of REE was analysed in pseudonodules. The I.REE content in the nodules ranges from 177.37 to 354.18ppm. This level of REE indicates a serious need for further exploration and research of phosphorite pseudonodules within the whole Lower Cretaceous phosphorite series and moreover, also in the Eocene phosphorite formation in the Lublin region.
Źródło:
Przegląd Geologiczny; 2020, 68, 7; 566--576
0033-2151
Pojawia się w:
Przegląd Geologiczny
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Pierwiastki ziem rzadkich w kwaśnych wodach kopalnianych : zarys problematyki
Rare earth elements in acid mine drainage waters : an outline of the issues
Autorzy:
Migaszewski, Zdzisław M.
Gałuszka, A.
Powiązania:
https://bibliotekanauki.pl/articles/2075910.pdf
Data publikacji:
2019
Wydawca:
Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:
kwaśne wody kopalniane
pierwiastki ziem rzadkich
cechy
anomalie
występowanie
interakcje geochemiczne
acid mine drainage
rare earth elements
characteristics
anomalies
occurrence
geochemical interactions
Opis:
This paper presents the brief characteristics of rare earth elements (REE) and their occurrence in acid mine drainage (AMD) waters. The special emphasis is laid on REE classification, computation of shale-normalized coefficients and interpretation of REE anomalies. This paper also outlines the REE behavior in the environment, geochemical interactions and their potential application for assessing an impact of AMD on the environment.
Źródło:
Przegląd Geologiczny; 2019, 67, 2; 105--114
0033-2151
Pojawia się w:
Przegląd Geologiczny
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Pierwiastki ziem rzadkich (REE) w wodach powierzchniowych i podziemnych Polski na tle innych krajów Europy
Rare earth elements (REE) in surface and ground waters of Poland in comparison to other European countries
Autorzy:
Wysocka, I. A.
Porowski, A.
Rogowska, A. M.
Kaczor-Kurzawa, D.
Powiązania:
https://bibliotekanauki.pl/articles/2075815.pdf
Data publikacji:
2018
Wydawca:
Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:
pierwiastki ziem rzadkich
wody podziemne
wody powierzchniowe
woda z kranu
wody butelkowane
hydrogeologia
rare earth elements
ground waters
surface waters
tap waters
bottled waters
hydrogeology
Opis:
This article is focused on the aspects related to the occurrence and the behavior of REE in hydrosphere. Particular attention is given to the natural waters of Europe including Poland. The data shown in this work are based on the studies and discussions published elsewhere, as well as on own investigations of REE concentrations in the natural waters of Poland (ground- and surface waters). The aim of this article is to present information on REE in different types of waters (ocean, ground- and surface waters). Potential sources of REE in the selected waters and factors affecting their concentrations and distribution patterns (signatures) are discussed. The input of REE originating from human activity is indicated and some examples of anthropogenic factors are presented. Additionally, some general information on natural REE abundances in various environmental compartments and their applications in the industry are provided. The potential influence of some major components on determination of europium content in water samples during measurements by mass spectrometry is also explained.
Źródło:
Przegląd Geologiczny; 2018, 66, 11; 692--705
0033-2151
Pojawia się w:
Przegląd Geologiczny
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Wzbogacenie w REE utworów osadowych w wybranych rejonach obrzeżenia mezozoicznego Gór Świętokrzyskich : obiecujące dane wstępne i potrzeba dalszych badań
REE enrichment of sedimentary formations in selected regions of the Mesozoic margin of the Holy Cross Mountains : promising preliminary data and more research needed
Autorzy:
Mikulski, Stanisław Z.
Brański, Paweł
Pieńkowski, Grzegorz
Małek, Rafał
Zglinicki, Karol
Chmielewski, Andrzej
Powiązania:
https://bibliotekanauki.pl/articles/2076190.pdf
Data publikacji:
2021
Wydawca:
Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:
rzadkie elementy ziemi
osady krzemoklastyczne
górny trias
dolna jura
fosforyty dolnokredowe
fosforyty albsko-cenomańskie
rare earth elements
siliciclastic deposits
Upper Triassic
Lower Jurassic
Lower Cretaceous phosphorites
Albian-Cenomanian phosphorites
Opis:
The main task of research was a quantitative and qualitative identification of rare earth elements within various Mesozoic sediments in the surroundings of the Holy Cross Mountains. Over 100 samples from archive boreholes, outcrops and mining waste were analysed using modern methods, like portable XRF, geochemical analysis (ICP-MS), electron microprobe and SEM. Results show enrichments of REE concentrations in sedimentary rock samples from the Niektań PIG-1 borehole (LREE up to 0.95%), Miedary outcrop (LREY up to 0.4%) and Lower Cretaceous phosphorites from mining waste in Chałupki and Annopol (LREE ~0.2%). Further investigation is strongly recommended in order to explain the distribution of REE in the study areas.
Źródło:
Przegląd Geologiczny; 2021, 69, 6; 379--385
0033-2151
Pojawia się w:
Przegląd Geologiczny
Dostawca treści:
Biblioteka Nauki
Artykuł
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