Temat: ore - Katalog OPAC zbiorów

Skocz do pozycji: 1.

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

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Tytuł:: Parametry geotechniczne częstochowskich iłów rudonośnych z rejonu Konopisk (SW obrzeżenie Częstochowy)
Geotechnical properties of siderite-rich clays from Konopiska municipality (SW margin of Częstochowa)
Autorzy:: Dudko-Pawłowska, I.
Kowalska, M.
Gawlik, M.
Powiązania:: https://bibliotekanauki.pl/articles/2075725.pdf
Data publikacji:: 2017
Wydawca:: Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:: glina kruszona
Konopiska
właściwości geologiczno-inżynierskie
ore-bearing clay
geological-engineering properties
Opis:: In the vicinity of the Konopiska municipality (SW margin of Częstochowa) ore-bearing clays have been deposited. These formations, only locally covered by younger sediments, constitute direct foundation subsoil, so their geotechnical parameters may conditionate founding possibility of various structures. The paper presents results of a series of experiments (conducted accordingly to PN-B-04481: 1988) dedicated to estimation of the geological-engineering properties of these clays in terms of the possibility of their use as a founding ground or a material to build earth structures. It has been learned that the tested soils contain high amounts of clayey fraction, occur in semi-solid state and show relatively high shear-strength parameters. Their natural water content is close to the optimum one (18-20%), at which a clear peak of the dry density (about 1.7 Mg/m3) is noted. Low colloidal activity proves that they are prone to expansion. All these properties indicate that they can constitute a competent subsoil for typical structures of the first or second geotechnical category, unless obviously the ultimate and serviceability limit states are checked and satisfied for the particular geotechnical case.
Źródło:: Przegląd Geologiczny; 2017, 65, 10/2; 848--855
0033-2151
Pojawia się w:: Przegląd Geologiczny
Dostawca treści:: Biblioteka Nauki

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Tytuł:: Wstępne wyniki badań geochemicznych i mineralogicznych stref wietrzenia złoża cynku i ołowiu (obszar śląsko-krakowski)
Preliminary geochemical and mineralogical results of zinc and lead weathering zones (Silesia-Cracow zinc-lead ore district)
Autorzy:: Swęd, Maciej
Powiązania:: https://bibliotekanauki.pl/articles/2075974.pdf
Data publikacji:: 2019
Wydawca:: Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:: złoże rudy cynku i ołowiu
wietrzenie
minerały wtórne
zinc-lead ore deposit
weathering
secondary minerals
Opis:: The study area is located within the Silesia-Cracow zinc-lead ore district. Secondary minerals were collected from the reclaimed zinc-lead underground mine in Bolesław and from the currently operated zinc-lead underground mine Olkusz-Pomorzany. The main goal of investigations was the geochemical and mineralogical comparison of weathering zone developed within horst and tectonic graben. Semi-quantitative chemical composition was determined using the SEM-EDS method and quantitative chemical composition was determined employing the EMP microanalysis. Mineralogical investigations were performed with the XRD. The predominant zinc mineral of weathering zone located within tectonic horst is hemimorphite. No primary and secondary lead minerals were observed in this zone. In contrast, the weathering zone within tectonic graben contains secondary carbonate zinc and lead minerals. These differences could result from pervasive sulfide minerals (especially marcasite) in a graben unit, and limestones which are the main gangue rock of this zinc-lead ore.
Źródło:: Przegląd Geologiczny; 2019, 67; 198--199
0033-2151
Pojawia się w:: Przegląd Geologiczny
Dostawca treści:: Biblioteka Nauki

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Tytuł:: 60-lecie odkrycia złoża rud miedzi Lubin–Sieroszowice – nowa perspektywa
The 60th anniversary of the discovery of the Lubin–Sieroszowice copper ore deposit – new perspective
Autorzy:: Oszczepalski, S.
Powiązania:: https://bibliotekanauki.pl/articles/2075736.pdf
Data publikacji:: 2017
Wydawca:: Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:: złoża
Lubin-Sieroszowice
ruda miedzi
odkrycie
badanie
przyszłość
Lubin-Sieroszowice deposit
copper ore
discovery
exploration
future
Opis:: During the period of 60 years, the mining and metallurgical industry has been developed to such extent that Poland is now among the worlds’major producers ofcopper and silver. The discovery, made on 23 March 1957 by a team of specialists from the Geological Institute under the leadership of Jan Wyżykowski, was followed by the preparation of the first geological documentation of the copper deposit, containing the results ofpioneering works that laid the foundation for the knowledge of the Fore-Sudetic Monocline geology. This discovery marked the beginning of the recognition of the deposit and gave rise to further exploration for prospective areas elsewhere in SW Poland. Later studies of numerous drill cores strongly indicate that the Zechstein copper-bearing series contains a very large volume of prognostic, prospective and hypothetical resources, rimming the oxidized Rote Fäule areas also outside the Lubin-Sieroszowice Copper District. Extensive deep exploration drilling is required to verify the resource potential in several prospects. The long-term challenges demand new solutions for the mining industry of the future within the EU, to enable the reindustrialization of Europe.
Źródło:: Przegląd Geologiczny; 2017, 65, 5; 312--320
0033-2151
Pojawia się w:: Przegląd Geologiczny
Dostawca treści:: Biblioteka Nauki

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Tytuł:: Zróżnicowanie i zmiany rzeźby terenu historycznego pola górniczego na Osicowej Górze k. Stąporkowa (NW obrzeżenie Gór Świętokrzyskich)
Differentiation and changes of the relief of historical mining field of the Osicowa Góra hill near Stąporków (NW margin of the Holy Cross Mountains)
Autorzy:: Kusztal, Piotr
Pabian, Grzegorz
Kalicki, Tomasz
Nowak, Ewa
Przepióra, Paweł
Powiązania:: https://bibliotekanauki.pl/articles/2076053.pdf
Data publikacji:: 2020
Wydawca:: Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:: geomorphology
historical iron ore mining
Osicowa Góra hill
geomorfologia
historyczne wydobycie rudy żelaza
Wzgórze Osicowa Góra
Opis:: As a result of historical human interference in the natural environment (iron ore mining) of the Osicowa Góra hill area, there are very clear relief transformations, whose location reflects the occurrence of minerals (the geological structure). Geomorphological forms, co-creating the post-industrial relief, are of various sizes, concentrations, arrangements and ages. They are susceptible to the impact of exogenous processes. Their secondary transformations are highly dynamic.
Źródło:: Przegląd Geologiczny; 2020, 68, 2; 127--134
0033-2151
Pojawia się w:: Przegląd Geologiczny
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 6.

Tytuł:: Geostrada Sudecka - nowa forma geoturystyki w Sudetach
Sudetic Geostrada – new form of geotourism in the Sudetes Mts.
Autorzy:: Cwojdziński, S.
Pacuła, J.
Stachowiak, A.
Powiązania:: https://bibliotekanauki.pl/articles/2074876.pdf
Data publikacji:: 2011
Wydawca:: Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:: geoturystyka
Geostrada Sudecka
Rudawy Janowickie
dawne górnictwo rud
geotourism
Sudetic Geostrada
Rudawy Janowickie Mts.
ancient ore mining
Opis:: Two new geoturistic projects based on the idea of the Sudetic Geostrada, proposed by Leszek Sawicki, are now realized in the Sudetes Mts. Project "Sudetic Geostrada - geologic-touristic guide" is carried out by the Polish Geological Institute – National Research Institute in collaboration with Czech Geological Survey within the frame of Poland-Czech Republic Cross-border Cooperation Operational Program 2007–2013. The project is aimed at creation of atractive geotouristic route, 600 km long, within cross-border areas of Poland and Czech Republic. Second project "Sudetic Geostrada - geological and landscape studies with cataloguing of inanimate nature objects" is lead by the Prof. Tadeusz Słomka and his team from University of Science and Technology in Cracow in collaboration with PGI Lower Silesian Branch. The project is focused on cataloguing and documentation of geotouristic objects and valorization of selected geostites for use in general and scientific education as well as geotourism.
Źródło:: Przegląd Geologiczny; 2011, 59, 7; 510-519
0033-2151
Pojawia się w:: Przegląd Geologiczny
Dostawca treści:: Biblioteka Nauki

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Tytuł:: Kopalnia rud cynku i ołowiu Pomorzany skończyła 40 lat : jak długo jeszcze wystarczy jej zasobów?
The Pomorzany Zn-Pb mine in Poland is 40 years old : when will its ore reserves become depleted?
Autorzy:: Paulo, A.
Wnuk, R.
Powiązania:: https://bibliotekanauki.pl/articles/2075453.pdf
Data publikacji:: 2015
Wydawca:: Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:: Pomorzany
kopalnia rud cynku i ołowiu
zarządzanie zasobami
rezerwy rudy
Zn-Pb mine
resource management
ore reserves
Opis:: The Pomorzany mine, currently the only one Zn-Pb mine in Poland and one of the largest underground mines of this type worldwide (output 2.5 Mt/y) exceeded 40 years of operation on the MV-type deposit. In 1960, the first geological report on its resources based on drillings was issued. Data from this long period were used to analyse the resource management and evolution of reserve tonnage and quality due to changes in the economic and technical viability as well as to qualify different categories of mine reserves and losses due to the ongoing operation. The mine project was based on geological resource of 97.6 Mt ore averaging 4.12% Zn and 1.42% Pb. Resources extracted with documented low losses and those remaining in situ amount to 92.7 Mt averaging 4.18% Zn and 1.27% Pb. These figures indicate the high accuracy of the exploration results and cost-effective management of resources. The observed trend of ore reserve increase over the last decade gives hope of delimiting at least 3 Mt over the next three years. The mine, which was planned for a 30-year life cycle, has sufficient reserves until 2016, and under favourable market conditions, may extend its life up to 2018.
Źródło:: Przegląd Geologiczny; 2015, 63, 12/2; 1483--1490
0033-2151
Pojawia się w:: Przegląd Geologiczny
Dostawca treści:: Biblioteka Nauki

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Tytuł:: Mineralizacja kruszcowa Cu-Mo typu porfirowego w rejonie Doliny Będkowskiej na Wyżynie Krakowsko-Częstochowskiej
Porphyry-type Cu-Mo mineralization in the Będkowska Valley region of the Kraków-Częstochowa Upland
Autorzy:: Małek, R.
Powiązania:: https://bibliotekanauki.pl/articles/2075828.pdf
Data publikacji:: 2018
Wydawca:: Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:: mineralizacja porfirowa
mineralizacja rudy
Dolina Będkowska
typ porfirowy
porphyry-type mineralization
ore mineralization
Będkowska Valley
Cu-Mo porphyry
Opis:: Signs of mineralization were found in historical boreholes of the Będkowska Valley region within granodiorites, porphyry dykes and mostly in country rocks, which are represented chiefly by Ediacaran meta-mudstones and meta-claystones. Sulphide mineralization of epigenetic character and hydrothermal origin is represented mainly by pyrite, chalcopyrite, molybdenite, sphalerite and galena, which appear as both impregnations and quartz, quartz-feldspar, quartz-carbonate and quartz-chlorite veinlets. Both clastic and magmatic rocks are marked by numerous metasomatic alterations like sericitization, biotitization, feldspatization, pyritization and chloritization.
Źródło:: Przegląd Geologiczny; 2018, 66, 4; 252--258
0033-2151
Pojawia się w:: Przegląd Geologiczny
Dostawca treści:: Biblioteka Nauki

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Tytuł:: Zmienność dolnocechsztyńskiej mineralizacji kruszcowej w sąsiedztwie stref uskokowych w złożu miedziowo-srebrowym Radwanice–Gaworzyce
Variability of ore mineralization in the vicinity of fault zones in the Radwanice-Gaworzyce copper-silver deposit
Autorzy:: Chmielewski, Andrzej
Głuszyński, Andrzej
Oszczepalski, Sławomir
Kuczak, Artur
Powiązania:: https://bibliotekanauki.pl/articles/2075982.pdf
Data publikacji:: 2019
Wydawca:: Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:: cechsztyn
strefy uskokowe
mineralizacja rudy
złoża miedziowo-srebrowe
strefa utleniona
Zechstein
fault zones
ore mineralization
copper-silver deposits
Rote Fäule
Opis:: The characteristic of ore mineralization in the immediate vicinity of fault zones in the Lower Zechstein deposits is shown. All presented outcomes are on the basis of rock material taken from mining profiles in the Radwanice-Gaworzyce deposit area. During conducted studies ore minerals and oxide minerals were identified under optical microscope in reflected light and photographic documentation of the examined samples was undertaken. In addition, microprobe examination was carried out for selected samples from the studied profiles along with calculations of the chemical composition of individual ore minerals. In all analyzed profiles, Rote Fäule oxidized zone (enriched with hematite) was found, which occurs at various levels of the Kupferschiefer series and the reduced zone (enriched with ore minerals) over the oxidized series. The redox front cuts across the boundaries oflithostratigraphic units, moving from the Weis- liegend to the higher parts of the Zechstein Limestone. The primary ore mineralization in the examined profiles is the chalcocite-digenite association with subordinate bornite and covelitte recorded in the reduced series. Furthermore, the secondary sulphide mineralization in the direct vicinity of tectonic deformation and faults superimposed on primary ore mineralization and hematite enrichments is observed and it is represented by chalcopyrite, bornite, tennantite, tetrahedrite and pyrite, both within reduced and oxidized zones.
Źródło:: Przegląd Geologiczny; 2019, 67; 147--153
0033-2151
Pojawia się w:: Przegląd Geologiczny
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 10.

Tytuł:: Mineralizacja kruszcowa w odkrywczym otworze Sieroszowice S-1 w świetle nowych badań
Ore mineralization in the discovery borehole Sieroszowice S-1 in the light of new research
Autorzy:: Oszczepalski, S.
Chmielewski, A.
Powiązania:: https://bibliotekanauki.pl/articles/2075738.pdf
Data publikacji:: 2017
Wydawca:: Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:: złoża miedziane
otwór wiertniczy
Sieroszowice S-1
mineralizacja rudy
Rote Fäule
Lubin–Sieroszowice copper deposit
Sieroszowice S-1 borehole
ore mineralization
Opis:: Sieroszowice S-1 borehole was drilled by the Geological Institute under the drilling program conducted by Jan Wyżykowski in the previously unexplored central part of the Fore-Sudetic Monocline, contributing to the discovery of the largest European copper ore deposit. The Zechstein copper-bearing series was reached on 23 March 1957, with the ore mineralization interval at a depth of 656.30-658.26 m. Detailed results of chemical analyses and petrographic investigation were included in the ore deposit geological documentation compiled in 1959, but new research methods currently applicable enable the complementary studies to acquire new results. New findings are based on compilation of reflected-light microscopy, CAMECA SX100 electron microprobe studies and LEO scanning electron microscope observations. As a result of the supplementary research, the qualitative and quantitative composition of ore minerals along with the indication of their chemical composition in microprobe studies as well as their distribution in the ore-mineralized interval are presented in detail in this paper. Ore mineralization occurs in the shale-carbonate series and it is generally represented by sulphides of Cu-Fe-S system (chalcopyrite, bornite), accompanied by digenite and covellite, occasionally geerite and spionkopite, but one of the ore intervals is dominated by chalcocite associated with bornite. Pyrite, galena and sphalerite commonly accompany copper sulphides, especially in the uppermost part of the copper-bearing series. A few previously unidentified minerals, such as native silver, silver amalgams, and clausthalite have also been identified. The Weissliegend is characterized by oxidative alteration, typical for the Rote Fäule pattern, and contains only relict sulphide mineralization represented by minor chalcopyrite and pyrite locally corroded by hematite. It displays an elevated concentration of gold as well.
Źródło:: Przegląd Geologiczny; 2017, 65, 5; 321--338
0033-2151
Pojawia się w:: Przegląd Geologiczny
Dostawca treści:: Biblioteka Nauki

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Tytuł:: Inwersyjne obrazowanie oporu w rejonie złoża Zn-Pb Zawiercie Źródłem informacji na temat budowy geologicznej
Application of electrical resistivity tomography (ERT) in the Zawiercie Zn-Pb ore area as a source of information on the geological structure
Autorzy:: Cabała, J.
Jochymczyk, K.
Poręba, A.
Powiązania:: https://bibliotekanauki.pl/articles/2074512.pdf
Data publikacji:: 2007
Wydawca:: Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:: inwersyjne obrazowanie oporu
geofizyczny pomiar
złoża w rejonie Zn-Pb Zawiercie
Polska
electrical resistivity tomography
geophysical survey
Zawiercie Zn-Pb ore deposits
Polska
Opis:: The depletion of Zn-Pb ores in developed mining areas and the increase in metal prices have resulted in the need to search for new deposits which have not been exploited yet. A project of drilling new exploratory boreholes should be preceded by an interpretation of archival geological data. To obtain the most valuable information on the geological structure leading to its plausible interpretation, it seems to be purposeful and advisable to apply some geophysical methods that are reasonably cheap in comparison with others. The method of electrical resistivity tomography, which in this research uses two of many measurement protocols such as Schlumberger array and dipole-dipole array, is particularly useful. Computer interpretation of geophysical results allows a high resolution 2D and 3D geoelectrical model of rock mass to be created. The study was carried out using the multi-electrode Lund Imaging System manufactured by ABEM, Sweden. In order to evaluate the practical application of this method, Zawiercie Zn-Pb ore deposits were chosen as the area used in previous scientific research. Taking into account mineralization in its economic aspect, the deposits occur at relatively shallow depths of 50-120 m. In the investigated region, the Triassic carbonate formation overlays the Devonian rocks. The Keuper low-resistance clay, occurring on the surface, provides a very good electrical contact between an electrode and the soil. This is why there are favourable measurement conditions in this area. The boundaries between the Keuper, Devonian and Triassic formations are clearly noticeable in the resistivity cross-sections obtained. On the basis of the ERT results, it is possible to locate faulting zones as well as karst systems. One of the profiles clearly shows the occurrence of a low-resistance anomaly correlated with Zn-Pb mineralization, which was confirmed by borehole surveys. However, this early stage of the research with the use of the ERT method cannot unequivocally identify the ore body, particularly as it was conditioned by the limited depth of prospecting.
Źródło:: Przegląd Geologiczny; 2007, 55, 10; 380-386
0033-2151
Pojawia się w:: Przegląd Geologiczny
Dostawca treści:: Biblioteka Nauki

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Tytuł:: Geologiczno-geofizyczna ocena perspektyw złożowych pierwotnych i wietrzeniowych minerałów tytanowych w rejonie ofiolitowego masywu Ślęży w Sudetach (SW Polska)
Geologic and geophysical estimation of the prospect for ore deposit of the occurrences of primary and placer titanium minerals in the Ślęża Massif ophiolite, area, the Sudetes Mts (SW Poland)
Autorzy:: Wiszniewska, J.
Petecki, Z.
Powiązania:: https://bibliotekanauki.pl/articles/2075531.pdf
Data publikacji:: 2016
Wydawca:: Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:: masyw Ślęży
minerały ciężkie
złoża rud tytanu
anomalia magnetyczna
anomalia grawimetryczna
Ophiolite Ślęża Massif
placer heavy minerals
titanium ore deposits
magnetic anomaly
gravimetric anomaly
Opis:: Miocene aged heavy mineral (HMin) alluvial cones and regolith sands above ore-bearing gabbro and amphibolite/diabase rock zone were considered as a prospective metallotect in the area of Devonian ophiolite Ślęża Massif in the Sudets (SW Poland). The available research data from the Sobótka region indicated that the ultramafic gabbro intrusion has an interesting titanium ore enrichment with minerals such as ilmenite and titanomagnetite in the Strzegomiany-Kunów primary ultramafic rocks. The mean composition of ore gabbro samples taken from the surface contained eg; Fe -14.21%, TiO2 - 4.92%, V2O5 - 0,15. Conducted geophysical surveys in the vicinity of the presumed gabbroic rocks at thin Quaternary sediments cover, suggested the variable content ofa primary mineralization, which could be related to the increased content of heavy minerals fractions over the bed in the form of regolith or as a secondary deposit. Titanium minerals such as ilmenite, sphene, were enriched during the oxidation process and created secondary bed, where the concentrates of titanium oxides: rutile, leucoxene or oxidized ilmenite may have a high titanium content as high as 70-90%. Placer HMin sands are at present a major source of titanium deposits worldwide and the largest industrial value due to their large resources, simplicity and purity of exploitation and the ability to yield concentrates of HMin: ilmenite, rutile, pseudobrookite, anatase and leucoxene, sometimes in the company of valuable zircon, monazite or garnet. These deposits in the world are mainly used in metallurgical and chemical industries, eg; the production ofpaints and pigments used in the pharmacy, paper and paint industry. Similar observations have been reported from the region of Spain, Portugal, western Australia andfrom the south of India. Preliminary results of presented study indicate that the Strzegomiany-Kunów region can be considered as prospective not only because of the presence ofprimary titanium mineralization in gabbro, especially in diallage gabbro, amphibolite (diabase) and serpentinite, but also a presence of enriched titanium mineralization in regolith over gabbro and in clastic sediments on the foreland of Ślęża Massif.
Źródło:: Przegląd Geologiczny; 2016, 64, 9; 650--656
0033-2151
Pojawia się w:: Przegląd Geologiczny
Dostawca treści:: Biblioteka Nauki

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Tytuł:: Zanieczyszczenie wód spływu powierzchniowego ze skarpy osadnika odpadów poflotacyjnych rud Zn-Pb typu doliny Mississippi w Bolesławiu k. Olkusza
Contaminated water runoff from dam slopes of tailings pond of flotation plant of Zn-Pb Mississippi Valley-type ores at Bolesław near Olkusz
Autorzy:: Bauerek, A.
Łączny, J.M.
Powiązania:: https://bibliotekanauki.pl/articles/2074748.pdf
Data publikacji:: 2010
Wydawca:: Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:: spływ powierzchniowy
odpadów poflotacyjnych
metale ciężkie
siarczki
złoża Zn-Pb Mississippi Valley-type (MVT)
rain water runoff
flotation wastes
heavy metals
sulfates
MVT ore deposits
Opis:: The paper presents results of studies on storm-generated surface runoff, a phenomenon belonging to the least known factors responsible for migration of pollutants to water environment. The results of determinations of pH, conductivity as well as content of Ca, Zn, Cd, and Pb are found to be useful as the main indicators of pollution spread by waters running from dam slopes of pond in which tailings from flotation of Zn-Pb ore are disposed. Rain water leaches fine fractions of carbonate-sulfate wastes (represented mainly by dolomite, 73%, and Fe sulfides – marcasite, up to 20%) which leads to change in character of surface runoff water to that of SO4-Ca hydro-chemical type. Among the leached metals significantly important for the environment are Zn, Cd and Pb whose concentrations exceed threshold values for surface and/or groundwater of IV quality class. Acceptable concentrations in waste waters are frequently exceeded by sulfates and incidentally by zinc. Variability of the analyzed concentration indices from the years 2008 and 2009 indicates influence of weather conditions on chemical composition of surface runoff water from slopes of tailings pond of flotation plant of MVT ores.
Źródło:: Przegląd Geologiczny; 2010, 58, 1; 54-59
0033-2151
Pojawia się w:: Przegląd Geologiczny
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 14.

Tytuł:: Trzeci wymiar geologii złoża rud miedzi
The third dimension of the geology of copper ore deposit
Autorzy:: Twardowski, Mateusz
Kaczmarek, Wojciech
Rożek, Robert
Powiązania:: https://bibliotekanauki.pl/articles/2076047.pdf
Data publikacji:: 2020
Wydawca:: Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:: modelowanie geologiczne 3D
modele konstrukcyjne
komórki modelu
złoże rud miedzi
KGHM Polska Miedź S.A.
3D geological modelling
structural models
grade models
copper ore deposit
Opis:: The issue of three-dimensional geological modelling of stratoidal copper and silver ore deposit in the Fore-Sudetic Homocline has been the subject of hot discussions for many years. Formation of a single layer of deposit body can suggest the ease of interpretation of its form and structure, putting into question the need of three-dimensional visualization. The problem of building and updating a model is directly related to the production scale of KGHM Polska Miedź S.A. which is held over an area of495 km2 with an annual progression of around 480 km of underground workings in three mines, which also includes additional exploration of the deposit body. An important step in the time-consuming 3D geological modelling process is the appropriate selection of previously prepared data and the spatial dimension for the target model - in accordance with its intended purpose. The process of 3D geological modelling, currently carried out at KGHM Polska Miedź S.A., can be divided into two related steps: structural modelling and grade modelling. The components of structural models are used in the grade modelling process, acting as a set of geological constraints during the grade estimation process. The products of both steps find practical application in many processes in a mining company.
Źródło:: Przegląd Geologiczny; 2020, 68, 12; 886--893
0033-2151
Pojawia się w:: Przegląd Geologiczny
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 15.

Tytuł:: Chondryt węglisty NWA 4446
Carbonaceous chondrite NWA 4446
Autorzy:: Przylibski, Tadeusz A.
Blutstein, Konrad
Łuszczek, Katarzyna
Gruchot, Joanna
Powiązania:: https://bibliotekanauki.pl/articles/2087069.pdf
Data publikacji:: 2022
Wydawca:: Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:: meteoryt
chondryt węglowy
chondryt CV3
Asteroida typu C
pas asteroid
Układ Słoneczny
ruda
meteorite
carbonaceous chondrite
CV3 chondrite
C-type asteroid
asteroid belt
Solar System
ore mineral
Opis:: The authors carried out petrographic, mineralogical, and chemical analyses (bulk chemical composition and microanalyses of mineral chemical composition) of NWA 4446 carbonaceous chondrite. NWA 4446 chondrite is classified as CV3, S2, W2. This meteorite is a rock fragment most likely from one of the C-type asteroids orbiting the Sun in the outer part of the asteroid belt. It represents the matter formed at the earliest stages of the formation of extrasola bodies in the solar system. As a result of the research, the authors documented a wider range of variation in the chemical composition of olivine crystals (Fa: 0.67-46.57 mol%) in the matrix and chondrules, and a much narrower range of variation in the chemical com- position of pyroxene crystals (Fs: 0.90–3.35 mol%) against the data used for the classification of the meteorite. The characteristics of the chondrules, ranging in size from 0.5 to more than 1 mm, allowed concluding that they constitute about 60% of the meteorite’s vol- ume, in which they form many structural and mineral varieties PO, POP, BO, PP and RP chondrules were observed. The remaining 40% of the chondrite volume is a matrix consisting of small crystals of pyroxenes, olivines, glass, as well as opaque minerals: sulphides, FeNi alloy, native copper and gold grains, carbonaceous substance, and compact CAIs. The mineral and chemical composi- tion of CAIs shows that their dominant mineral is melilite, accompanied by diopside and spinel. The chemical composition of spinel and diopside is very similar to their total chemical formulas, while the composition of melilite shows a significant sodium deficiency. Among the opaque minerals, one phase of the FeNi dominates - awaruite (Ni 3 Fe), and sulphides are represented by troilite (FeS) and mackinawite ((Fe,Ni) 9 S 8 ). Moreover, grains of native copper with an admixture of gold and grains of native gold with an admixture of platinum, nickel and copper with a size of several μm were identified. Taking into account the admixtures contained in the above-mentioned opaque minerals (mainly Co and Cu), the parent rock of the carbonaceous chondrite NWA 4446 can be considered to have been mineralized with Fe, Ni, Co and Cu ore minerals with the content of Au and Pt. This means that, we can expect deposits of native forms of the above-mentioned metals and sulphides on the parent bodies of carbonaceous chondrites of the CV group - C-type asteroids.
Źródło:: Przegląd Geologiczny; 2022, 70, 7; 513--526
0033-2151
Pojawia się w:: Przegląd Geologiczny
Dostawca treści:: Biblioteka Nauki

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