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Nowe znalezisko meteorytu w południowej części województwa łódzkiego

100%

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’.

2

Mössbauerowskie badania meteorytu Kuźnica

88%

Jakubowska M., Woźniak M., Bogusz P., Karwowski Ł., Gałazka-Friedman J., Duda P.

Acta Societatis Metheoriticae Polonorum

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2021

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vol. 12

31-40

EN

Kuźnica meteorite was found in summer 2008 by an inhabitant of Częstochowa in the village of Kuźnica (Poland, voivodeship: Łódź, county: Pajęczano) in Poland. The finder, who is a passionate and collector of interesting stones, shared his find with the world only after a few years in the autumn of 2018. The found meteorite with a mass of 2.14 kg is an ordinary chondrite type H5. The degree of weathering on the surface is W2, inside W1. Currently, the meteorite is represented by 3 parts and two thin plates. The main mass is 2.037 kg, fragments are 13.7 g and 5.81 g. The found object was officially classified as a meteorite on 22th of November 2020. In this paper, we present the results of the Kuźnica meteorite measurements obtained by using the Mössbauer spectroscopy method. Mössbauer measurements of Kuźnica were performed at room temperature. The experimental spectrum was elaborated with “Recoil” program. Nine mineralogical phases were identified in the obtained Mössbauer spectrum: two doublets associated with olivine, two doublets associated with pyroxene, sextet associated with troilite, sextet associated with metallic phase identified as kamacite, doublet associated with iron hydroxides and two sextets associated with oxyhydroxides. The presence of a metallic phase or troilite in the test sample is convincing evidence of its extraterrestrial origin. These are mineralogical phases that can only arise in space conditions. Mössbauer spectroscopy allows for unambiguous identification of these mineralogical phases. In the standard 4M method, we use four basic phases to determine the type of ordinary chondrite: olivine, pyroxene, troilite and metallic phase, and we choose specimens in which the content of weathered phases does not exceed 7%. The Kuźnica meteorite is heavily weathered. The content of weathered phases is as much as 36.4%. Secondary minerals are a breakdown product of the metallic phase and to a lesser extent of the sulphide phase. Due to the strong weathering of the Kuźnica meteorite, we can modify the 4M method using only two basic phases: olivine and pyroxene. The analysis of the location of the Kuźnica meteorite on the figure of pyroxene vs. olivine dependence shows that it is ordinary chondrite type H. In this paper, the influence of the loss of the metallic and sulphide phases on the position of the Kuźnica meteorite on the figure of pyroxene/olivine vs. (pyroxene+metallic phase/(olivine+troilite)) was also checked. Weathering processes significantly transform many minerals. The resulting compounds often have parameters difficult to identify. However, difficulties in identifying secondary phases and their origins should not prevent an attempt to determine the type of meteorites using the 4M method.

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Od Baszkówki do Kuźnicy – 27 lat badań mössbauerowskich meteorytów w Polsce

63%

Gałązka-Friedman J., Woźniak M.

Acta Societatis Metheoriticae Polonorum

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2023

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vol. 14

31-55

EN

The history, how the Mössbauer studies of meteorites began in Poland, was already described in our “Meteorites Odyssey… 20 years have passed”. One late afternoon (it was probably Spring 1995) I [Jolanta Gałązka-Friedman] was sitting in the Nonna Bakun’s office (at Banacha street) and we were talking about planet Mars. Suddenly Mr. Marian Stępniewski jumped to our room saying: We have a new Polish meteorite. It is called Baszkówka. Do you have any suggestion, how could we study this meteorite? Mössbauer spectroscopy – we both answered at the same time. And this is how it started, and it has been continued for the next quarter of a century. The first results of the Mössbauer studies of the Baszkówka meteorite were presented at the ISIAME conference in Johannesburg in 1996. In this paper we present the most important problems related to meteorites, which were investigated by us using Mössbauer spectroscopy. We will, however, show almost no formulas. We will try to explain everything by a method based on plots of Mössbauer spectra. We will try not to boast too much regarding our successes, but to explain also the problems that we were not able to resolve. While investigating the Baszkówka meteorite, we got most fascinated by troilite. We noticed that most of the laboratories determined the Mössbauer parameters of troilite incorrectly. They did not take into account the so-called theta angle, the value of which depends strongly on the number of vacancies and various additives. We thought that the theta angle may show us the parent body of the investigated meteorite. Unfortunately, this hypothesis turned up to be too difficult to defend. Then we studied Morasko meteorite and we discovered, by the comparison with Baszkówka meteorite Mössbauer spectra, and determined – up to now – not identified mineral phases present also in Morasko, such as pyrrhotite, daubréelite, taenite, tetrataenite, antitaenite and cohenite. In 2019 we published in MAPS a paper titled “Application of Mössbauer spectroscopy, multidimensional discriminant analysis and Mahalanobis distance for classification of equilibrated ordinary chondrites” (4M method), in which a new objective method for classification of ordinary chondrites is based on the knowledge of the Mössbauer spectra of the 4 main mineral phases present in the ordinary chondrites of H, L and LL type. Now we are working on the refinement of the 4M method enlarging our collaborative team by various foreign laboratories.

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Historyczny układ hydrotechniczny w Jędrowie (województwo świętokrzyskie) zachowany w formach i osadach – studium geoarcheologiczno-konserwatorskie

63%

Przepióra P., Kalicki T., Chwałek S., Houbrechts G.

Acta Universitatis Lodziensis. Folia Geographica Physica

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2019

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issue 18

29-40

EN

The water mill is one of the few objects in the Old Polish Industrial District that have been preserved in good condition. This also applies to the remains of hydrotechnical infrastructure that are still visible in the relief and traces of its functioning preserved in the sediments of the Kamionka River floodplain. Detailed analyzes using specialized research methods supported by a query of historical materials revealed the location of individual elements of this infrastructure, i.e. former reservoir, mill race, dyke. Part of this infrastructure is well preserved in the relief and visible on the digital elevation model. Other historical metallurgical activity traces are only visible after macro- and microscopic analysis of lacustrine and overbank sediments, i.e. charcoals, slags and microscopic iron balls. A forge operated in the place of the restored mill or nearby, as proven by archival materials. Currently, the water mill is being restored, and the research presented in the article was used to take this object along with the nearest surroundings under protection as a technical monument.

PL

Młyn w Jędrowie jest jednym z niewielu obiektów na terenie Staropolskiego Okręgu Przemysłowego, który zachował się w dobrym stanie. Dotyczy to również pozostałości wciąż widocznej w rzeźbie infrastruktury hydrotechnicznej oraz śladów jej funkcjonowania zachowanych w osadach równiny zalewowej Kamionki. Szczegółowe analizy, z wykorzystaniem specjalistycznych metod badawczych podpartych kwerendą materiałów historycznych, pozwoliły na lokalizację poszczególnych elementów tej infrastruktury, tj. dawny zbiornik, młynówka, wały. Część tej infrastruktury jest dobrze zachowana w rzeźbie i widoczna na numerycznym modelu terenu. Inne ślady po historycznej działalności metalurgicznej widoczne są dopiero po makro- i mikroskopowej analizie osadów jeziornych oraz pozakorytowych, tj. węgielki drzewne, żużle i mikroskopijne kulki żelaza. W miejscu odrestaurowanego młyna lub też w jego pobliżu funkcjonowała kuźnica, o czym świadczą materiały archiwalne. Obecnie młyn jest odrestaurowywany, a badania przedstawione w artykule posłużyły do objęcia tego obiektu wraz z najbliższym otoczeniem ochroną konserwatorską jako zabytku techniki.

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Nowe znalezisko meteorytu w południowej części województwa łódzkiego

Mössbauerowskie badania meteorytu Kuźnica

Od Baszkówki do Kuźnicy – 27 lat badań mössbauerowskich meteorytów w Polsce

Historyczny układ hydrotechniczny w Jędrowie (województwo świętokrzyskie) zachowany w formach i osadach – studium geoarcheologiczno-konserwatorskie