European Mineralogical Union Medal lecture The European Mineralogical Union (EMU) invites you to an online lecture of the 2022 EMU Research Excellence Medal recipient, Dr. Jakub Kierczak from the University of Wrocław, Poland, titled “Ultramafic geosystems as a source of metallic elements to the environment“. Please register on the EMU website <http://eurominunion.org/> Offical website of the European Mineralogical Union<http://eurominunion.org/> eurominunion.org<http://eurominunion.org/> [X] <http://eurominunion.org/> Best regards, Isabelle Daniel EMU acting president