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New insights into an old rock: the Aarhus Meteorite

Aarhus’s extra-terrestrial visitor finally gets a modern analysis and classification.

Photo: James Scott

7th semester student Maja C. F. Pedersen has published the results of her Bachelor project on the Aarhus meteorite, which fell in Risskov 1951, as a journal article in the Bulletin of the Geological Society of Denmark.

Last studied in 1963, Maja gave the meteorite mineral compositions and textures a modern micro-analytical analysis using Aarhus Geoscience’s scanning electron microscope and Copenhagen University’s microprobe. She revealed the precise classification of this ancient rock to be a high iron chondrite (H6). Her microscale analysis also revealed that this meteorite was brecciated, but that the breccia texture had been metamorphosed. This suggests that this special rock records a significant portion of the formation of the parent body (where the meteorite came from) just after formation of the Solar System c. 4.56 billion years ago.

The meteorite is housed in the Natural History Museum of Aarhus, and her publication can be found here: https://2dgf.dk/xpdf/bull74-209-217.pdf