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1

Klasyfikacja meteorytów z Sahary

100%

Karwowski Ł.

Acta Societatis Metheoriticae Polonorum

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2011

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vol. 2

185-186

2

Datowanie metamorfizmu z początku Układu Słonecznego: wiek U-Pb apatytu z meteorytu Leoncin (chondryt zwyczajny LL5-6 o charakterze brekcji monomiktycznej)

64%

Szopa K., Karwowski Ł.

Acta Societatis Metheoriticae Polonorum

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2021

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vol. 12

85-91

EN

The U-Pb system is a useful chronometer for understanding the formation history of chondritic materials. Modern studies showed that the formation ages of chondrites (4.55–4.56 Ga) effectively equal the formation age of the solar system. Recently, researchers have undertaken U-Pb isotopic studies of phosphates separated from equilibrated ordinary chondrites, which are the major hosts for U and are enriched by an order of magnitude or more relative to the bulk rock (typical U concentrations of 0.1–3 ppm in phosphates). The observed Pb-Pb model ages for these phosphates range from 4.563–4.502 Ga, with an analytical precision of 1 Ma and the U-Pb system is apparently concordant. They also argued that the Pb-Pb ages of the phosphates from several H chondrites show a negative correlation with metamorphic grade. They concluded that thermal processing of the equilibrated chondrites took place over a 60 Ma interval and grain size of the phosphates increases with the degree of metamorphism. In the Leoncin meteorite, apatite reveal the 207Pb/206Pb age, which is 4549±61 Ma. The obtained apatite age in the Leoncin meteorite reflects the early solar system formation process. Moreover, the age is an example of the early solar system metamorphism, which confirms a slightly younger event of secondary changes of the parent body for this meteorite. It is also the first isotopic age of a Polish meteorite.

3

Wietrzenie meteorytów Saint-Aubin i Zegdou w kolekcjach

64%

Gurdziel A., Karwowski Ł.

Acta Societatis Metheoriticae Polonorum

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2016

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vol. 7

36-44

EN

Weathering meteorites in different collections carried out in various ways. Its course depends mainly on the conditions which exist in a room, where meteorites are stored as well as on their construction. An important role is also the time. In Saint-Aubin iron meteorite, as a result of weathering, were formed iron hydroxides, mainly akaganeite (beta-Fe3+ (O, OH, Cl)), that occurs in the intergranular spaces and cracks. On plate surfaces of the meteorite Zegdou hydrated magnesium sulfate (most likely epsomite) (MgSO4·7(H2O)) are formed. The thin slice of the Zegdou meteorite stored in a room at constant temperature (about 20°C) and low air humidity underwent significantly, a slower degradation in relation to the tiles of the same meteorite stored in a room variable temperatures and high atmospheric humidity. The differences were observed already over several years.

PL

Wietrzenie meteorytów w zbiorach kolekcjonerskich przebiega w zróżnicowany sposób. Jego przebieg jest uzależniony głównie od warunków, jakie panują w pomieszczeniu gdzie meteoryty są przechowywane, od upływu czasu oraz od ich budowy. W meteorycie żelaznym Saint-Aubin w wyniku wietrzenia, w przestrzeniach międzyziarnowych i szczelinach, wykształcają się wodorotlenki żelaza, głównie akaganeit (beta-Fe3+ (O, OH, Cl)). Na powierzchniach płytek meteorytu Zegdou powstaje uwodniony siarczan magnezu (najprawdopodobniej epsomit) (MgSO4·7(H2O)). Płytka meteorytu Zegdou przechowywana w pomieszczeniu, w stałej temperaturze (ok. 20°C) i niskiej wilgotności powietrza, ulegała znacznie wolniejszej degradacji w stosunku do płytki tego samego meteorytu, przechowywanego w pomieszczeniu o zmiennych temperaturach i podwyższonej wilgotności. Różnice obserwowano już w przeciągu kilku lat.

4

Nowy niezbrekcjonowany meteoryt enstatytowy z Algierii

64%

Karwowski Ł., Szyszka M.

Acta Societatis Metheoriticae Polonorum

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2019

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vol. 10

51-61

EN

In this paper, a new mineralogical and chemical data on a new brecciated enstatite are presented. Fe-low enstite is the main pyroxene. Locally small grains of diopside were noted. The rest of silicates are represented by oligoclase and cristobalite. Siliceous glass was also found. The meteorite contains up to11.5 vol.% of Ni-kamacite (up to 6.8 wt.% of Ni and up to 2.9 wt.% of Si). Niningeryt and Cr-rich troilite are the main sulphides. Small amount of graphite forms a bundle-like agregates of fine plate crystals. The classification is still in progres. The new meteorite from Algeria can be an example of unbrecciated enstatite or ungrouped achondrites.

5

Porównanie wietrzenia meteorytów Pułtusk i Morasko

64%

Gurdziel A., Karwowski Ł.

Acta Societatis Metheoriticae Polonorum

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2011

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vol. 2

182-183

6

NWA 14360 – Nowy meteoryt z Nigru

64%

Karwowski Ł., Szopa K.

Acta Societatis Metheoriticae Polonorum

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2022

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vol. 13

47-59

EN

The new meteorite was bought as one single stone in 2019 from a dealer in Niger by Tomasz Jakubowski. The meteorite has fusion crust. It contains chondrules of different types with dominance of barred olivine chondrules, with diameter to 1.5 mm. Px and Ol are 78.1 vol%. of the meteorite mass. Pl is up 11.8 vol%. Average fayalite content is 24.93. Metallic phases are 3.0 vol%. Troilite is up to 5.9 vol%. Spinel (Cr-spinel) is up to 0.9 vol%. Average content of the secondary Fe-rich minerals (e.g. hydroxides) is 0.4 vol%. Feldspar composition is: Ab80.2Or5.0An14.8. Mean content of Al2O3, MgO and TiO2 in chromium spinel is 6.70 wt%, 2.05 wt% and 2.02 wt%, respectively. Metal phases are kamacite and tetrataenite. The kamacite has a Ni content in the range 5.83–6.81 wt%, while the Co content is in the range 0.39 to 0.56 wt%. Tetrataenite is has Ni content from 49.68 to 50.46 wt%, and Co up to 0.05 wt%. High-Ca monoclinic pyroxene, similar to diopside, is very rare. Accessory minerals are: chlorapatite and merrylite. Base on chemistry and petrography, the meteorite is classified as ordinary chondrite (L5). The main mass, a 9190 g specimen, is in Krzysztof Socha private collection. Small fragments with the total mass 71 g are stored in Museum of Earth Sciences (catalogue no: WNoZ/Mt/110) at University of Silesia in Katowice, Poland. 39 g was used for thin-section preparation and spectroscopic investigation (Mössbauer spectroscopy).

7

Cieszyn – nowy polski meteoryt

64%

Karwowski Ł., Kotowiecki A.

Acta Societatis Metheoriticae Polonorum

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2009

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vol. 1

48-51

EN

On 21 of July 2001, small fragment of metal has been found on side walk, near branch of Silesian University in Cieszyn, by Ms. Małgorzata Kotowiecki. After a few years, the metallic fragment was carefully study. The investigation show that the metallic element has meteoritic origin. The mineral composition of the meteorite (kamacite, taenite, tetraenite, troilite, daubreelite) classify it as an iron meteorite and the most probably is representative of octahedrite. The meteorite has features of shock metamorphism and represent very old fall. It could be supposed that the meteorite has been transported to the destination place, together with gravel.

8

Reevesyt i jarosyt – nowe wtórne fazy w meteorycie Morasko

64%

Gurdziel A., Karwowski Ł.

Acta Societatis Metheoriticae Polonorum

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2016

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vol. 7

27-35

EN

Numerous investigations of Morasko meteorites, have so far identified many secondary mineral phases like: goethite, lepidocrocite, akaganeite, siderite, calcite, ankerite, awaruite, nickel native as well as vivianite. Recently studies on a new found meteorites Morasko, allowed the identification of more secondary minerals. They are represented by: aragonite CaCO3, chukanovite Fe2(CO3)(OH)2 and hellyerite (Ni[CO3]·6H2O) (Karwowski et al. 2011). More detailed analysis of the above phases revealed a new secondary phases, which are represented by: reevesite (Ni6Fe3+2CO3(OH)16·4H2O) as well as jarosite (KFe3+3(OH)6(SO4)2).

9

Strzelce Krajeńskie - średniowieczny deszcz meteorytów

64%

Karwowski Ł., Brzustowicz G. J.

Acta Societatis Metheoriticae Polonorum

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2009

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vol. 1

59-66

EN

There are relatively few good sources of historical information on the rain of meteorites, that fell down on Strzelce Krajeńskie in the Middle Ages (ca. 1300). The meteoritic rain was probably responsible for destruction of the city. The city was damaged for ca. 30 next years.

10

Leoncin – nowy polski chondryt LL4-6

64%

Karwowski Ł., Szopa K.

Acta Societatis Metheoriticae Polonorum

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2020

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vol. 11

31-44

EN

In this study, the new ordinary chondrite LL4-6 from the Leoncin Community, Poland is reported. This meteorite was sold on Allegro, a Polish online e-commerce platform, to a person, who is member of the Meteoritic Society of Poland. The meteorite was sold in 2017, but originally the fall was in 2012. Finder of the meteorite from the Nowe Gniewniewice Village (Leoncin Community) claimed that the meteorite was still warm (the higher temperature was result after hit in the roof) after fall and made a whole in metal roof (which was repaired soon after the fall). For five years after fall of the meteorite, it stayed in the finder hands. The total known weight of the meteorite is 111.3 g. The main mass is in the M. Burski’s collection (~70 g). Two plates with the total mass 20 g are stored at the Earth Science Museum, Faculty of Natural Sciences, University of Silesia in Katowice, Poland. The meteorite is strongly brecciated. All clasts are rounded, reaching up to 1 cm in size. The matrix is very fine grained. The biggest as well as clasts are represented by complex olivine-feldspar chondrule. Numerous clasts do not have any chondrules or their fragments as well. The fusion crust of the Leoncin meteorite is typical, having porous and glassy (isotropic) the most external part. The glassy zone is rich in Cr-rich spinels, where relicts of unmolten olivines and pyroxenes are present. The next zone is so-called the black vein zone. The veins are represented my metallic phases or Fe sulphide. The most common mineral in the fresh meteorite is olivine, having Fo and Fa up to 69 and 31, respectively. Pyroxenes are characterised by a general chemical formulae as follow: Fs9.78–9.7 Wo44.77–44.2 En46.02–45.53. Almost all feldspars are represented by plagioclases (Ab83.5–86.76Or2.54–5.53An9.42–12.5). Metallic phases are mostly represented by kamacite, taenite and rare tetrataenite (the richest in Ni phase; 55.92–49.21 wt.%). Troilite, spinel, ilmenite, apatite and merrillite are also noted. Based on chemical composition of investigated minerals, the Leoncin meteorite can by classified as a LL ordinary chondrite. It has been confirmed by fayalite content (avg. 30.33%) as well as the forsterite content in pyroxenes (avg. 25.32%). Brecciating of the meteorite, the same mineral content of the chondrules and their matrix shows that the meteorite is an example of monomictic breccia. Metamorphic changes of the clasts, their quality, size and mineral content, together with the chemical composition of selected minerals, indicate the LL4-6 type of the meteorites. The Leoncin meteorite seems to be a regolith, that formed far from the collision place on the asteroid. This situation is confirmed by the limitation of gassy material only to the fusion crust and lack of shock changes in the minerals. The parent body might be similar to the 25143 Itokawa asteroid or has connection with the Flora family.

11

Wtórne zmiany w obrębie fosforków i węglików w meteorycie Morasko

64%

Gurdziel A., Karwowski Ł.

|

EN

Weathering processes of minerals which are presented in the Morasko meteorite are characterized by different speed of the secondary changes. The most resistant minerals for the alternations are phosphites (schreibersite, rhabdite, nickielphosphide) and carbides (cohenite) but also the mentioned phases show secondary fluctuation. Phosphites are changing into metallic, phosphorus free phases, which are similar to native nickel or avaurite (awaruitu) with very well visible modification of its crystal morphology. All phosphorus amount is introduced to secondary phosphates like vivianite. The carbides alternation processes occur in a different way than in case of phosphates. Carbon is free to the environment up to time, when the new phase is totally decomposed and replaced by hydroxyoxide of iron. Sometimes, the high-nickel metallic phases are also noted as the products of the weathering. All described mineral phases, that are resistant for secondary alternation might be indicators for high evolved meteoritic material in the Earth’s weathered rocks.

PL

Wietrzenie poszczególnych faz mineralnych, obecnych we fragmentach meteorytu Morasko, przebiega w różnym tempie. Za najbardziej odporne uznaje się fosforki (schreibersyt, rhabdyt, nickielphosphide) oraz węgliki (cohenit). Jednak po pewnym czasie również i te fazy ulegają rozpadowi. Z fosforków wyraźnie ubywa fosforu i przekształcają się one stopniowo w fazy metaliczne, zbliżone do taenitu lub awaruitu. Towarzyszy temu zmiana morfologii kryształów. Uwolniony fosfor wchodzi w skład wtórnych fosforanów typu wiwianit (vivianit). Węgliki zachowują się nieco odmiennie. Węgiel zostaje stopniowo uwalniany do środowiska a w dalszym etapie faza ta ulega całkowitemu rozpadowi przechodząc w wodorotlenki żelaza. Jednymi z ostatnich faz, które można dostrzec wśród wodorotlenków żelaza są wtórne fazy wysokoniklowe. Powyższe odporne na wietrzenie fazy, jako nieobecne na powierzchni Ziemi (z wyjątkiem krzemianów), mogą służyć identyfikacji meteorytowego pochodzenia silnie zwietrzałych skał.

12

Wietrzenie meteorytów Morasko i Pułtusk

64%

Gurdziel A., Karwowski Ł.

Acta Societatis Metheoriticae Polonorum

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2009

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vol. 1

28-34

13

Procesy wietrzenia w meteorycie Pułtusk (wstępne wyniki badań)

64%

Gurdziel A., Karwowski Ł.

Acta Societatis Metheoriticae Polonorum

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2009

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vol. 1

23-27

EN

The researchInvestigations of secondary changes in the tree samples of Pułtusk meteorite, have brought more questions than answers. All the samples have well kept preserved fusion crust, which is built of tree parts. The external part is massive and compact, practically without any fractures whereas the middle part is cracked and porous. The internal part goes into the “black veins zone”. In the middle zone of the crust, skeletal crystals of Fe-Ni spinel, - trevorite, were found. Minerals present within Pułtusk meteorite are differently variously weathered. In At the edges of meteorite the sulphide phases are slightly altered whereas the metallic phases are completely replaced by iron and iron-nickel oxides and hydroxides, which were party removed during cutting. Silicates and chromite are the best preserved minerals.

14

Pierwsze znalezisko polskich mołdawitów

52%

Brachaniec T., Karwowski Ł., Szopa K.

Acta Societatis Metheoriticae Polonorum

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2013

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vol. 4

37-38

EN

In Lower Silesia, in the late Miocene sediments moldavites were discovered. Finding of polish moldavites may change the existing model of tektites distribution, after the impact in the Ries crater area. Further studies are planned and should bring a new information.

15

Nowe znalezisko meteorytu w południowej części województwa łódzkiego

52%

Karwowski Ł., Szopa K., Woźniak M.

Acta Societatis Metheoriticae Polonorum

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2021

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vol. 12

41-57

EN

An anonymous person from Częstochowa in Poland found a new meteorite during the summer of 2008. The specimen was found in eolian sand, where exotic grains connected with glacial activity were not observed. The suspected meteorite was kept in the founder’s possession until the autumn of 2018. This was when the holder of the meteorite contacted the owners of the woreczko.pl webpage, which is dedicated to meteorite identification. Moreover, the webpage was developed and operated by meteorite collectors Jan Woreczko and Wadi. After meeting, Jan and Wadi bought the meteorite, which is now part of their collection. After the meeting, Jan and Wadi bought the meteorite (total meteorite mass 2143 g), which is now part of their collection. Three fragments with their total mass 20.74 g as well as two thin-sections (7.03 g) are deposited at the Earth Sciences Museum, University of Silesia in Katowice. The fusion crust is black to brownish, typical for a chondrite. Regmagliptes are visible. The meteorite is characterized by chondrules, which range in diameter from 0.015 to 1.000 mm in diameter. The most common type of chondrule is represented by olivine (Ol). The barred Ol texture, showing elongate, sub-parallel bars of olivine with clear pyroxenes (Px) and oligoclase between the bars. The second characteristic type is represented by Ol-Px porphyritic chondrules and radial Px chondrules. The matrix is not recrystallized; and the clasts are up to 0.1 to 0.2 mm in diameter. Px and Ol, plagioclase, metallic phases, troilite, and spinel (Cr-spinel) are up to 71.9 vol.%, 11.2 vol.%., 7.0 vol.%., 4.2 vol.%., and 1.1 vol.% of the meteorite, respectively. The average content of the secondary minerals is 4.4 vol.% (close to the outermost part is up to 8–10 vol.%. The meteorite is classified as a H5 ordinary chondrite, based on the Ol and Px composition (Fa/Fs), with an official name ‘Kuźnica’.

16

Aktualny stan badań nad meteorytem Morasko

52%

Muszyński A., Karwowski Ł., Kryza R., Pilski A. S.

Acta Societatis Metheoriticae Polonorum

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2011

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vol. 2

191

17

Charakterystyka ałtaitu z meteorytu Morasko metodą spektroskopii Ramana

52%

Runka T., Karwowski Ł., Muszyński A.

Acta Societatis Metheoriticae Polonorum

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2012

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vol. 3

159-160

18

Polimineralne nodule w gruboziarnistym meteorycie Morasko

52%

Karwowski Ł., Muszyński A., Kryza R., Pilski A. S.

Acta Societatis Metheoriticae Polonorum

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2009

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vol. 1

52-58

EN

Morasko meteorite (IAB octahedrite) contains numerous graphite-troilite inclusions. Within these inclusions, many mineral phases have been found, including native elements, sulphides, tellurides, oxides, phosphates and silicates. Apart from dominant graphite and troilite, the following minerals occur: copper, sphalerite, daubreelite, chromite, cosmochlor, enstatite, albite and orthoclase; phosphates (buchwaldite and brianite) are found occasionally, whereas djerfischerite, altaite, olivine and silica are rare. The mineral composition of the nodules suggests a more complex origin of the Morasko-type meteorites than currently assumed.

19

Czy w Polsce są autochtoniczne tektyty?

52%

Brachaniec T., Szopa K., Karwowski Ł.

Acta Societatis Metheoriticae Polonorum

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2016

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vol. 7

17-20

EN

Undoubtedly, the river transport is very important in tektites distribution. Most of the moldavites are located in fluvial sediments, what indicates their redeposition origin. Similar situation is on the territory of Poland. Finding of the autochthonous Polish tektites seems very difficult and requires further fieldworks.

20

Polskie mołdawity – podsumowanie dotychczasowej wiedzy

52%

Brachaniec T., Szopa K., Karwowski Ł.

Acta Societatis Metheoriticae Polonorum

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2017

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vol. 8

18-22

EN

Up to now, twenty Polish moldavites were recovered from fluvial deposits of Gozdnica formation. Apart from typical bottle green colour, moldavites also yield other typical features for tektites like presence of bubbles and inclusions of lechatelierite. Low degree of corrosion and palaeogeography suggest river transport flow from Lusatia to the east direction in the Miocene.

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Klasyfikacja meteorytów z Sahary

Datowanie metamorfizmu z początku Układu Słonecznego: wiek U-Pb apatytu z meteorytu Leoncin (chondryt zwyczajny LL5-6 o charakterze brekcji monomiktycznej)

Wietrzenie meteorytów Saint-Aubin i Zegdou w kolekcjach

Nowy niezbrekcjonowany meteoryt enstatytowy z Algierii

Porównanie wietrzenia meteorytów Pułtusk i Morasko

NWA 14360 – Nowy meteoryt z Nigru

Cieszyn – nowy polski meteoryt

Reevesyt i jarosyt – nowe wtórne fazy w meteorycie Morasko

Strzelce Krajeńskie - średniowieczny deszcz meteorytów

Leoncin – nowy polski chondryt LL4-6

Wtórne zmiany w obrębie fosforków i węglików w meteorycie Morasko

Wietrzenie meteorytów Morasko i Pułtusk

Procesy wietrzenia w meteorycie Pułtusk (wstępne wyniki badań)

Pierwsze znalezisko polskich mołdawitów

Nowe znalezisko meteorytu w południowej części województwa łódzkiego

Aktualny stan badań nad meteorytem Morasko

Charakterystyka ałtaitu z meteorytu Morasko metodą spektroskopii Ramana

Polimineralne nodule w gruboziarnistym meteorycie Morasko

Czy w Polsce są autochtoniczne tektyty?

Polskie mołdawity – podsumowanie dotychczasowej wiedzy