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As it was usual at the time for naturalists, Pál Kitaibel (1757–1817) was involved in the study of all three ‘realms’ of natural history (mineralogy, botany, zoology) to a certain extent. Mineralogy then embraced every field of earth science and Kitaibel studied it as part of his general descriptive (physiographic) work and as a tool subject for his other (chemical, hydrographical and botanical) lines of investigations. Accordingly, his mineralogical studies were mostly done within the fields of mineral chemistry, topographic mineralogy and petrography. However, most of his results remained in manuscript. During his field expeditions within the Kingdom of Hungary, Croatia and Slavonia, he collected a number of mineral and rock specimens and he received many as a present, mainly from Slavonia. An autograph partial catalogue of these specimens was preserved, which we present in the appendix of this paper in a transliterated version.
Géza Szendrei (1942–2015) was an outstanding Hungarian soil mineralogist, pioneer of soil micromorphology research in Hungary. He spent more than 30 years from his almost half-century-long scientific career at the Department of Mineralogy and Petrology of the Hungarian Natural History Museum. In addition to the presentation of his scientific biography and his work for the museum, this obituary includes a list of his scientific publications.