This paper describes the history of the discovery of avdoninite and its distinctive features. The mineral is named after Avdonin V. N., the Ural mineralogist. He made a significant contribution to the study of exogenous processes in the pyrite deposits being developed. Vladimir Nikolaevich Avdonin is a participant of the Great Patriotic War, Candidate of Geological and Mineralogical Sciences, Associate Professor, Honorary Worker of Higher Education of Russia, a member of the All-Russian Mineralogical Society, award holder named after O. E. Claire; he was presented with government awards and the medal of the All-Russian Mineralogical Society.

Keywords: avdoninite, V. N. Avdonin, exogenous processes, minerals, Ural Geological Museum.

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