Yuri Zhemchuzhnikov

Yuri Apollonovich Zhemchuzhnikov (Юрий Аполлонович Жемчужников; 8 May 1885, Samara – 9 January 1957, Leningrad) was a Russian and Soviet geologist. He became professor at the Leningrad Mining University in 1920 and was a noted expert in petrography. The mineral Zhemchuzhnikovite is named after him.