EN
The article deals with nomenclatural names of minerals based on proper names of the persons associated with the Czech environment, and provides their etymologies. The names form part of the official mineralogical nomenclature and have been approved by the Commission on New Minerals, Nomenclature and Classification of the International Mineralogical Association, i.e. the authority recognizing the existence of new minerals. In the nomenclature consisting of 5,975 items (as of October 2023), 88 names based on anthroponyms have been identified, formed usually from last names, first names or their combination. These words are neologisms known to a limited number of experts, but they nevertheless rank among full-fledged words of the Czech vocabulary that is closely connected to the history of Czech science.