European Journal of Mineralogy
European Journal of Mineralogy
European Journal of Mineralogy
Articles | Volume 37, issue 6
Articles | Volume 37, issue 6
https://doi.org/10.5194/ejm-37-971-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/ejm-37-971-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 37, issue 6
New minerals, nomenclature, and classification
 | 
19 Dec 2025
New minerals, nomenclature, and classification |  | 19 Dec 2025

The crystal structure of launayite from Taylor Pit, Madoc, Ontario, Canada: crystal chemistry, modulated superstructures, and parent modular structure compared with rouxelite

Dan Topa, Berthold Stoeger, Frank Norman Keutsch, and Gheorghe Ilinca

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Short summary

We conducted this research to gain an understanding of the unknown crystal structure of mineral launayite, which contains elements like antimony, copper, and lead. Using advanced X-ray techniques, we solved its crystal structure and discovered new details, such as unit cell parameters, symmetry, and substitutions. These findings provide accurate information about its relationship with rouxelite.

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