Yuri Zhemchuzhnikov
Russian clay mineralogist, geologist
Yuri Apollonovich Zhemchuzhnikov (Russian: Юрий Аполлонович Жемчужников; 8 May [O.S. 26 April] 1885 – 9 January 1957) was a Russian geologist. He became professor at the Saint Petersburg Mining Institute in 1920 and was a noted expert in petrography. The mineral Zhemchuzhnikovite is named after him.