The chondrite breccia of Antonin (L4‐5)—A new meteorite fall from Poland with a heterogeneous distribution of metal

Patzek, Markus

Peters, Stefan T. M.
Barrat, Jean‐Alix
Di Rocco, Tommaso
Pack, Andreas

Ebert, Samuel

Jansen, Christian A.

Kmieciak, Kryspin
DOI: https://doi.org/10.1111/maps.13905
Persistent URL: http://resolver.sub.uni-goettingen.de/purl?gldocs-11858/11453
Peters, Stefan T. M.; 2 Universität Göttingen Geowissenschaftliches Zentrum Goldschmidtstr. 1 D‐37077 Göttingen Germany
Barrat, Jean‐Alix; 4 University of Brest, CNRS, IRD Ifremer, LEMAR F‐29280 Plouzané France
Di Rocco, Tommaso; 2 Universität Göttingen Geowissenschaftliches Zentrum Goldschmidtstr. 1 D‐37077 Göttingen Germany
Pack, Andreas; 2 Universität Göttingen Geowissenschaftliches Zentrum Goldschmidtstr. 1 D‐37077 Göttingen Germany
Ebert, Samuel; 1 Institut für Planetologie University of Münster Wilhelm‐Klemm‐Str. 10 D‐48149 Münster Germany
Jansen, Christian A.; 1 Institut für Planetologie University of Münster Wilhelm‐Klemm‐Str. 10 D‐48149 Münster Germany
Kmieciak, Kryspin; 6 Olsza 2 63‐100 Śrem Kraków Poland
Abstract
On July 15, 2021, a huge fireball was visible over Poland. After the possible strewn field was calculated, the first and so far only sample, with a mass of 350 g, was discovered 18 days after the fireball event. The Antonin meteorite was found August 3, 2021, on the edge of a forest close to a dirt road near Helenow, a small suburb of the city of Mikstat. The rock is an ordinary chondrite breccia and consists of equilibrated and recrystallized lithologies. The boundaries between different fragments are difficult to detect, and the lithologies are of petrologic type 5 and type 4. The rock is moderately shocked (S4) and contains local impact melt areas and thin shock veins. The low‐Ca pyroxene and olivine are equilibrated (Fs20.6 and Fa24.0, respectively), typical of L chondrites. The L chondrite classification is also supported by O isotope data and the results of bulk chemical analysis. The Ti isotope characteristics confirm that Antonin is related to the noncarbonaceous (NC) meteorites. One of the studied thin sections shows an unusual metal–chondrule assemblage, perhaps indicating that the metal in the chondrite is heterogeneously distributed, which is, however, not clearly visible in the element abundances.