Chondryt Sołtmany

• Authors: Tadeusz A. Przylibski

Title variants

EN

Sołtmany chondrite

• Languages of publication: PL

Abstracts

EN

The Sołtmany hammer meteorite is classified as an ordinary chondrite type L6, W0, S2. At present it is the most thoroughly and comprehensively examined Polish meteorite. A comprehensive petrological, mineralogical and geochemical analysis alongside the investigation of its physical and particularly thermophysical properties, and, most of all, analyses of cosmogenic radionuclides and noble gases isotopes content, as well as the use of a troilite thermometer has made it possible to draw interesting conclusions concerning the genesis and evolution of the parent body and the history of the parent meteoroid and, finally, the Sołtmany meteorite. The present report attempts at summing up the results of studies conducted at several European research centres in the last four years. The age of the the Sołtmany chondrite parent rock has been defined at 4.137 billion years. It was formed at a temperature of up to 440–450 K (about 170°C), probably at a depth of up to 3 to 7 km under the surface of the parent body, i.e. at a pressure of the order of 1–2.4 kbar. Such a low temperature during the accretion, diagenesis and metamorphism of the parent body may point to its complicated development, which may be in part due to collisions of partially melted planetesimals. Like with other type L ordinary chondrites, one can infer that the parent body could have been destroyed about 467 million years ago, at the time of a catastrophic collision which led to the formation of Gefion family of planetoids. Perhaps one of the bodies in this family was involved in another collision about 29.2 million years ago, which resulted in ejecting the parent meteoroid of the Sołtmany chondrite onto the Earth collision trajectory. Before entering the Earth’s atmosphere, this meteoroid had the mass of about 36 kg and the diameter of ca 13.5 cm. During its flight through the atmosphere, it rotated and somersaulted, which resulted in the formation of an uniform thin (0.5–0.7 mm) fusion crust, whose temperature reached 1000°C. In the last phase, the Sołtmany meteorite fell almost vertically and its mass was a mere 3% of the mass of the parent meteoroid – 1.066 kg. It hit the roof and then the concrete stairs of a farm building, which caused it to break into two bigger and many small pieces. It was found a few minutes after the fall, which occurred at 6:03 a.m. (CEST, UTC+2:00) on 30 April 2011, by Wydmińskie Lake in northern Poland (54°00,53’N, 22°00,30’E). The Sołtmany chondrite is one of just 14 meteorites in which the activity concentration of the cosmogenic 52Mn has been determined, and one of the few ordinary chondrites where the concentration of organic matter has been defined. As a result, it was found out that unlike in carbonaceous CI chondrites, the composition of organic particles is dominated by less complex compounds (CHO and CHOS) than CHNO and CHNOS compounds. This may indicate the decomposition of more complex organic compounds into particles with simple structures during magmatic and metamorphic processes related to formation of type L ordinary chondrites.

Keywords

EN

Gefion family; L6; asteroid; atomic weight; bulk chemistry; cosmic-ray exposure age; cosmogenic radionuclides; density; fusion crust; magnetic susceptibility; meteorite; meteorite age; meteorite fall; mössbauer spectroscopy; noble gas; ordinary chondrite; organic matter; parent body; porosity; primordial radionuclides; thermophysical properties; troilite thermometer

Discipline

• GEOLOGY: GEOLOGY

• Publisher: Polskie Towarzystwo Meteorytowe
• Journal: Acta Societatis Metheoriticae Polonorum
• Year: 2016
• Volume: 7
• Pages: 93-122

Contributors

author

Tadeusz A. Przylibski

• Politechnika Wrocławska, Wydział Geoinżynierii, Górnictwa i Geologii, Zakład Geologii i Wód Mineralnych

References

• Beatty J.K., Collins Petersen C., Chaikin A., 1999, The New Solar System, Cambridge University Press, New York, USA.
• Bennett M.E. III, McSween H.Y.Jr., 1996, Revised model calculations for the thermal histories of ordinary chondrite parent bodies, Meteoritics and Planetary Science, 31, s. 783–792.
• Bus S.J., Binzel R.P., 2002, Phase II of the Small Main-Belt Asteroid Spectroscopic Survey. A Feature-Based Taxonomy, Icarus, 158, s. 146–177.
• Consolmagno G.J., Britt D.T., Macke R.J., 2008, The significance of meteorite density and porosity, Chemie der Erde, 68, s. 1–29.
• Gałązka-Friedman J., Szlachta K., 2012, Mössbauer studies of Sołtmany meteorite – preliminary results, Meteorites, 2, s. 73–77.
• Gałązka-Friedman J., Szlachta K., Karwowski Ł., Woźniak M., 2014, Mössbauer studies of Soltmany and Shisr 176 meteorites – comparison with other ordinary chondrites, Hyperfine Interactions, 226, s. 593–600.
• Hutchison R., 1996, Chondrules and their associates in ordinary chondrites: A planetary connection?, [in:] Hewins R.H., Jones R.H., and Scott E.R.D. (Eds.) – Chondrules and the protoplanetary disk, Cambridge University Press, Cambridge, s. 311–318.
• Hutchison R., 2006, Meteorites. A Petrologic, Chemical and Isotopic Synthesis. Cambridge University Press, Cambridge, UK.
• Karwowski Ł., 2012, Sołtmany meteorite, Meteorites, 2, s. 15–30.
• Karwowski Ł., Pilski A.S., Przylibski T.A., Gattacceca J., Rochette P., Łuszczek K., Kryza R., Woźniak B., Woźniak M., 2011, A new meteorite fall at Sołtmany, Poland, 74th Annual Meteoritical Society Meeting, 5336pdf, Meteoritics & Planetary Science, 46(S1), s. A118.
• Kessel R., Beckett J.R., Stolper E.M., 2007, The thermal history of equilibrated ordinary chondrites and the relationship between textural maturity and temperature, Geochimica et Cosmochimica Acta, 71, s. 1855–1881.
• Lang K.R., 2011, The Cambridge Guide to the Solar System, Second Edition, Cambridge University Press, Cambridge, UK.
• Laubenstein M., Giampaoli A., Janowski P., Mietelski J.W., 2012, Cosmogenic radionuclides in the Sołtmany (L6) meteorite, Meteorites, 2, s. 45–51.
• Lauer H.V.Jr., Gooding J.L., 1996, Troilite cosmothermometer: application to L-chondrites, Lunar and Planetary Science Conference, XXVII, s. 731–732.
• Łuszczek K., Dalcher N., Leya I., 2012, Cosmogenic and radiogenic noble gases in the Sołtmany L6 chondrite, Meteorites, 2, s. 39–43.
• Macke R.J., 2010, Survey of meteorite physical properties: density, porosity and magnetic susceptibility, Ph.D. Thesis, University of Central Florida, Orlando.
• Nesvorný D., Vokrouhlický D., Morbidelli A., Bottke W.F., 2009, Asteroidal source of L chondrite meteorites, Icarus, 200, s. 698–701.
• Przylibski T.A., Łuszczek K., 2012, Bulk chemical composition of Sołtmany chondrite, Meteorites, 2, s. 31–37.
• Przylibski T.A., Pilski A.S., Zagożdżon P.P., Kryza R., 2003, Petrology of the Baszkówka L5 chondrite: A record of surface forming processes on the parent body, Meteoritics and Planetary Science, 38 (6), s. 927–937.
• Rochette P., Gattacceca J., Lewandowski M., 2012, Magnetic classification of meteorites and application to the Sołtmany fall, Meteorites, 2, s. 67–71.
• Sanders I.S., 1996. A chondrule forming scenario involving molten planetesimals, [in:] Hewins R.H., Jones R.H., and Scott E.R.D. (Eds.) – Chondrules and the protoplanetary disk, Cambridge University Press, Cambridge, s. 327–334.
• Schmitt-Kopplin P., Harir M., Kanawati B., Tziozis D., Hertkorn N., Gabelica Z., 2012, Chemical footprint of the solvent soluble extraterrestrial organic matter occluded in Sołtmany ordinary chondrite, Meteorites, 2, s. 79–92.
• Szlachta K., Woźniak M., Gałązka-Friedman J., 2014, Porównawcze badania mössbauerowskie meteorytów: Sołtmany (L6), Chelyabinsk (LL5) i Grzempy (H5), Acta Societatis Metheoriticae Polonorum, 5, s. 115–120.
• Szurgot M., 2014, Modal abundance of minerals in Sołtmany L6 chondrite, 77th Annual Meteoritical Society Meeting, 5031pdf, Meteoritics & Planetary Science, 49(S1), s. A380.
• Szurgot M., 2015, Średni ciężar atomowy chondrytu Sołtmany, chondrytów L6 i minerałów pozaziemskich, Acta Societatis Metheoriticae Polonorum, 6, s. 107–128.
• Szurgot M., Adamus A., Wach R.A., 2013a, Troilite cosmothermometer in Sołtmany meteorite, 76th Annual Meteoritical Society Meeting, 5004pdf, Meteoritics & Planetary Science, 48(S1), s. A302.
• Szurgot M., Adamus A., Wach R.A., 2013b, Estimation of fusion crust temperature of Sołtmany meteorite by troilite thermometry, 76th Annual Meteoritical Society Meeting, 5033pdf, Meteoritics & Planetary Science, 48(S1), s. A301.
• Szurgot M., Wach R.A., Przylibski T.A., 2012, Thermophysical properties of the Sołtmany meteorite, Meteorites, 2, s. 53–65.
• Szurgot M., Wach R.A., Przylibski T.A., 2014, Właściwości termofizyczne meteorytu Sołtmany, Acta Societatis Metheoriticae Polonorum, 5, s. 185–186.
• Wach R.A., Adamus A., Szurgot M., 2013, Specific heat capacity of Sołtmany and NWA 4560 meteorites, 76th Annual Meteoritical Society Meeting, 5017pdf, Meteoritics & Planetary Science, 48(S1), s. A331.
• Woźniak B., Woźniak M., 2012, Account of circumstances surrounding the fall of a meteorite in Sołtmany village, Meteorites, 2, s. 9–14.
• Zappalà V., Bendjoya Ph., Cellino A., Farinella P., Froeschlé C., 1995, Asteroid Families: Search of a 12,487-Asteroid Sample Using Two Different Clustering Techniques, Icarus, 116, s. 291–314.

• Document Type: article