Prof. dr. Aleksander Rečnik received prestigious »Pannonia Award« following his 20-year collaboration with the Department of Geology and Environment, Faculty of Engineering at Pannonian University, and support of Hungarian doctoral students in electron microscopy of interfaces in their studies of phase transformations in materials. Joint research involved in–situ TEM experiments to study solid state reactions. In January 2022, a fundamental NKFIH–ARRS research project on aragonite twinning was approved for funding, where Hungarian and Slovenian researchers jointly tackle the problems related to the formation of aragonite under atmospheric conditions, which is one of the fundamental issues in mineralogy. The recognition to our colleague was awarded by the Academic Senate of the University of Pannonia and honors outstanding personalities with long–standing collaboration that substantially contributed to the development of new research areas at their university. Congratulations!