Petr Černý
Petr Černý FRSC (8 January 1934 – 7 April 2018) was a mineralogy professor at the University of Manitoba.Černý's studies focus on pegmatite. He is best known for his geological mapping of Bernic Lake, Manitoba in the 1970s. The site has since hosted several tantalum-lithium-caesium mines, for example the Tanco Mine. Provided by Wikipedia