Proper names of places referring to the Czech and Slovak localities in mineralogical nomenclature

The article deals with the terminology of mineralogy, particularly with the names of minerals formed from proper names of places located in the territory of the Czech Republic and the Slovak Republic. The official list of minerals approved by the Commission on New Minerals, Nomenclature and Classification of the International Mineralogical Association is used as a corpus. In the sample, containing almost six thousand items, 40 terms of this type were found, constituting 21% and 24% of the names for which the Czech Republic or the Slovak Republic is listed as the first place of discovery. These terms have become part of the official terminological vocabulary of the natural sciences. For each of them, the article provides its etymology. The names are based on onomastic metonymies, with roots referring to the names of type localities where the minerals were found, names of the surrounding villages, towns, hills, and mountain ranges.