European Journal of Mineralogy
European Journal of Mineralogy
European Journal of Mineralogy
Articles | Volume 33, issue 1
Articles | Volume 33, issue 1
https://doi.org/10.5194/ejm-33-9-2021
© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/ejm-33-9-2021
© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 33, issue 1
Research article
 | 
29 Jan 2021
Research article |  | 29 Jan 2021

On the anomalous shapes of native copper crystals from the Michigan Copper Country

Jean-Claude Boulliard, Jérôme Aléon, and Eloïse Gaillou

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Short summary
The anomalous shapes of Michigan copper crystals are well known by mineral collectors and are curated in museums worldwide. Still, their particular habits remain enigmatic. These anomalous crystals do not seem to follow the standard crystal shape theories, maybe due to the presence of oxygen impurities. This new find is of great importance in shape-dependent catalysis, sensor characteristics, or other properties of material such as nanocrystals.
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