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    Wyświetlanie 1-6 z 6
    Tytuł:
    Ciała macierzyste meteorytów żelaznych jako złoża metali
    Parent bodies of iron meteorites as metal ores deposits
    Autorzy:
    Przylibski, Tadeusz A.
    Donhefner, Hubert
    Łuszczek, Katarzyna
    Powiązania:
    https://bibliotekanauki.pl/articles/1032940.pdf
    Data publikacji:
    2012
    Wydawca:
    Polskie Towarzystwo Meteorytowe
    Tematy:
    M-type asteroid
    asteroid belt
    chromium
    deposit
    iron meteorite
    metal
    Opis:
    Some of M type asteroids, like 016 Psyche, 022 Kalliope, 055 Pandora, 110 Lydia, 250 Bettina, 347 Pariana, 678 Fredegundis, 771 Libera, 872 Holda, are probably the source of iron meteorites. The population of these asteroids is less than 10% of all minor bodies orbiting the Sun in the asteroid belt. In the paper we analyzed the concentrations of 19 selected metals in 1730 iron meteorites according to the groups. Base on it authors found out that beside Fe and Ni the parent bodies of iron meteorites are the richest in Co, Cu, Ge, Cr, and Ga. They are also rich in As, Pt, Mo, Os, Pd, and Ir. The iron meteorites of IVB group are the richest in metals. Meteorites belonging to this group contain the highest average concentrations of Ir, Co, W, Re, Pt, Os, Pd, Rh, Ru, Mo, and Ni. Meteorites from IAB group are the richest in Ge, As, Sb and Au. The parent bodies of iron meteorites, especially from IVB and IAB groups, can be recognized as very rich polymetallic deposits. The concentrations of most of 19 analyzed metals in iron meteorites are greater than the concentrations in Earth’s crust. Only tungsten and chromium according to their strong litophile character occur in lower concentrations than in Earth’s crust. Few of the M type asteroids, those that are the source of iron meteorites, are probably the most differentiated bodies in the asteroid belt. Their chemical composition considerably differs from the composition of CI carbonaceous chondrites. Among their the most differentiated (enriched in some elements and depleted in others) and differing from CI chondrites are the parent bodies of iron meteorites belonging to IVB group. However even they are far less differentiated than Earth’s crust. This is the proof of relatively long chemical evolution of IVB group parent body comparing to parent bodies of other groups of iron meteorites and CI chondrites, but from the other hand the evolution of this body is also significantly shorter than the chemical evolution of Earth’s crust.
    Źródło:
    Acta Societatis Metheoriticae Polonorum; 2012, 3; 71-103
    2080-5497
    Pojawia się w:
    Acta Societatis Metheoriticae Polonorum
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Skład chondrytów węglistych jako wyznacznik zasobności planetoid typu C w surowce metaliczne
    Composition of carbonaceous chondrites as an indicator of the abundance of C-type asteroids in metallic resources
    Autorzy:
    Blutstein, Konrad
    Przylibski, Tadeusz A.
    Łuszczek, Katarzyna
    Gruchot, Joanna
    Powiązania:
    https://bibliotekanauki.pl/articles/2034027.pdf
    Data publikacji:
    2022-03
    Wydawca:
    Polskie Towarzystwo Meteorytowe
    Tematy:
    carbonaceous chondrite
    meteorite
    C-type asteroid
    asteroid belt
    extraterrestrial mining
    metal
    extraterrestrial resources
    Opis:
    The chemical composition of carbonaceous chondrites was analysed in terms of the content of selected 24 metals, including noble metals and rare-earth metals. Based on the obtained results, the abundance of C-type asteroids in metallic raw materials was estimated and compared to the concentration of terrestrial deposits and the average content in the Earth’s crust. All the analysed elements, except rare earths, showed higher concentrations in carbonaceous chondrites than in the Earth’s crust, but most of them did not match the Earth’s deposit contents. The exception is Fe and Ni, the concentrations of which in carbonaceous chondrites significantly exceed the Earth’s deposit concentrations. The profitability of mining operations on C-type asteroids is also increased by the number of accompanying mineral commodities, mainly metals (Cr, Co, Cu, Au, Pt, Pd, Ag), and water ice. In addition, the parent bodies of carbonaceous chondrites occur relatively close to the moons of Jupiter and Saturn – potential space mission targets.
    Źródło:
    Acta Societatis Metheoriticae Polonorum; 2022, 13; 7-26
    2080-5497
    Pojawia się w:
    Acta Societatis Metheoriticae Polonorum
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Perspektywy eksploatacji złóż metali z grupy platynowców z powierzchni asteroid
    Prospects for the exploitation of platinum group metals (PGM) from the asteroid surface
    Autorzy:
    Kłósko, P.
    Barański, K.
    Powiązania:
    https://bibliotekanauki.pl/articles/164263.pdf
    Data publikacji:
    2017
    Wydawca:
    Stowarzyszenie Inżynierów i Techników Górnictwa
    Tematy:
    górnictwo kosmosu
    pas asteroid
    złoża platynowców
    space mining
    asteroid belt
    platinum group metals (PGM) deposits
    Opis:
    Nieustannie rosnące zapotrzebowanie na surowce metaliczne, w tym metale z grupy platynowców, skłania do poszukiwania nowych, dotychczas niewykorzystywanych źródeł surowców. Potencjalne źródło platynowców stanowią asteroidy znajdujące się w Pasie Planetoid oraz asteroidy z grupy obiektów bliskich ziemi (NEO - ang. Near-Earth Objects). Na podstawie prowadzonych obecnie badań i projektów w dziedzinie eksploracji kosmosu, agencje rządowe i przedsiębiorstwa prywatne opracowują technologie umożliwiające eksploatację złóż platynowców pochodzących z powierzchni asteroid. Biorąc pod uwagę wysokie ceny metali z grupy platynowców oraz ich ograniczone zasoby na Ziemi, pomysł eksploatacji złóż pochodzenia kosmicznego wydaje się uzasadniony ekonomicznie. Istotną kwestią są także aspekty prawne i etyczne, związane z wykorzystywaniem obiektów pozaziemskich w celach gospodarczych.
    Constantly growing demand for metallic minerals, including platinum group metals (PGM) stimulates the search for new sources of raw materials, not used yet. The potential sources of PGM are asteroids located in the Asteroid Belt and asteroids from the group of Near-Earth Objects (NEO). On the basis of ongoing researches and projects in the field of space exploration, government agencies and private companies are working on technologies which enable exploitation of PGM from the surface of asteroids. Because of high prices of PGM minerals and their limited resources on Earth, the idea of exploitation of extraterrestrial sources appears to be economically reasonable. Also, the important issue is legal and ethical aspects connected with the use of extraterrestrial objects for economic purposes.
    Źródło:
    Przegląd Górniczy; 2017, 73, 10; 1-8
    0033-216X
    Pojawia się w:
    Przegląd Górniczy
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Skład chondrytów zwyczajnych a potencjalne surowce pasa planetoid
    Composition of Ordinary Chondrites and Potential Natural Resources of Asteroid Belt
    Autorzy:
    Łuszczek, Katarzyna
    Przylibski, Tadeusz A.
    Powiązania:
    https://bibliotekanauki.pl/articles/1032729.pdf
    Data publikacji:
    2011
    Wydawca:
    Polskie Towarzystwo Meteorytowe
    Tematy:
    Fe-Ni alloy
    asteroid
    asteroid belt
    chondrite
    extraterrestrial resource
    meteorite
    meteorites
    natural resource
    ordinary chondrite
    troilite
    Opis:
    In this article the authors present a simple method of determining the content of selected metal raw materials (Fe, Ni, Co) on the parent bodies of ordinary chondrites. Thanks to the use of planimeter for measuring, under microscope, polished slices of meteorites, it is possible to estimate quite accurately the proportion of these metals in the parent bodies of meteorites, i.e. on asteroids. When it comes to analysing a large number of polished slices, these results will be most likely comparable to much more expensive results of chemical tests conducted on meteorites. Based on the analysis of 16 thin polished sections and polished slices of 11 ordinary chondrites, the authors found out that the highest content of Fe, Ni and Co ore minerals, reaching 10,06% of the total volume, can be found in ordinary chondrites from group H. For ordinary chondrites from groups L and LL, it makes 3,86% and 3,93% of the volume respectively. Employing the results of chemical analyses available in literature sources, the authors also estimated the size of Fe, Ni and Co resources for several selected asteroids. These bodies contain higher concentrations of iron, nickel and cobalt than terrestrial deposits (those found in the earth’s crust). The total content of Fe on parent bodies of even the most deficient in metals group LL of ordinary chondrites is about twice as high as that in the earth’s crust. Cobalt occurs on parent asteroids of ordinary chondrites in concentrations 15–24 times as high as those in the earth’s crust, and the concentrations of Ni are 100–180 times as high as those in the earth’s crust. The contents of these metals on parent asteroids of ordinary chondrites are also several times as high as those in currently extracted deposits in the earth’s crust. Taking into account the mean annual terrestrial production of these metals, the authors have estimated that a parent asteroid of ordinary chondrites with the size between 433 Eros and 6 Hebe could satisfy our need for Fe, Ni and Co for the nearest several million to dozens of billion years. Considering the fact that asteroid belt contains plenty of such objects, and as many asteroids built chiefly of Fe-Ni alloy, one should regard this section of the Solar System as a practically inexhaustible source of metal raw materials. The prospect of their exploitation is probably much nearer than we can currently imagine.
    Źródło:
    Acta Societatis Metheoriticae Polonorum; 2011, 2; 92-111
    2080-5497
    Pojawia się w:
    Acta Societatis Metheoriticae Polonorum
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The Asteroid Belt as the Consequence of Resonance Density Convergence From Solar Velocity Around the Galaxy and Universal Dynamic Pressure
    Autorzy:
    Persinger, M. A.
    Vares, D. A. E.
    Powiązania:
    https://bibliotekanauki.pl/articles/412061.pdf
    Data publikacji:
    2014
    Wydawca:
    Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
    Tematy:
    origin of asteroid belt
    universal dynamic pressure
    intrinsic frequencies
    matter formation
    solar system
    Opis:
    The velocity of the solar system around the galaxy as it moves through universal dynamic pressure of about 0.15 nPa results in a critical mass density of 1.5 protons per cc. Interplanetary measurements indicate this density occurs within the space occupied by asteroids. Quantitative evidence is offered that the matter in asteroid space failed to accrete into a planet because of the disruptive resonance between universal dynamic pressure and the velocity of the system. The model may accommodate the chemical characteristics of the different regions of the asteroid belt and the marked difference in planetary characteristics above (the inner planets) and below (the “gas giants”) the critical density. The energy accumulated within the functional toroidal space between Mars and Jupiter since the formation of the solar system is equivalent to the total mass of asteroids. If energy is still emerging within this region then the probability of non-traditional disruption of orbits for certain masses of asteroids may have significant impact. Specific frequencies that should show enhanced power based upon these calculations are derived.
    Źródło:
    International Letters of Chemistry, Physics and Astronomy; 2014, 15; 73-79
    2299-3843
    Pojawia się w:
    International Letters of Chemistry, Physics and Astronomy
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    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
    Artykuł
      Wyświetlanie 1-6 z 6

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