The anomalous polymict ordinary chondrite breccia of Elmshorn (H3-6)—Late reaccretion after collision between two ordinary chondrite parent bodies, complete disruption, and mixing possibly about 2.8 Gyr ago

Addi Bischoff (Corresponding author), Markus Patzek, Romain M.L. Alosius, Jean Alix Barrat, Jasper Berndt, Henner Busemann, Detlev Degering, Tommaso Di Rocco, Mattias Ek, Jérôme Gattacceca, Jose R.A. Godinho, Dieter Heinlein, Daniela Krietsch, Colin Maden, Oscar Marchhart, Martin Martschini, Silke Merchel, Andreas Pack, Stefan Peters, Miriam RüfenachtJochen Schlüter, Maria Schönbächler, Aleksandra Stojic, Jakob Storz, Wolfgang Tillmann, Alexander Wieser, Karl Wimmer, Reiner Zielke

Publications: Contribution to journalArticlePeer Reviewed

Abstract

Elmshorn fell April 25, 2023, about 30 km northwest of the city of Hamburg (Germany). Shortly after the fall, 21 pieces were recovered totaling a mass of 4277 g. Elmshorn is a polymict and anomalous H3-6 chondritic, fragmental breccia. The rock is a mixture of typical H chondrite lithologies and clasts of intermediate H/L (or L, based on magnetic properties) chondrite origin. In some of the 21 pieces, the H chondrite lithologies dominate, while in others the H/L (or L) chondrite components are prevalent. The H/L chondrite assignment of these components is based on the mean composition of their olivines in equilibrated type 4 fragments (~Fa21–22). The physical properties like density (3.34 g cm−3) and magnetic susceptibility (logχ
Original languageEnglish
Pages (from-to)2321-2356
Number of pages36
JournalMeteoritics and Planetary Science
Volume59
Issue number9
Early online date29 May 2024
DOIs
Publication statusPublished - Sept 2024

Austrian Fields of Science 2012

  • 105105 Geochemistry
  • 103014 Nuclear physics

Cite this