TEXT Sebastian Schmidt1, Daniela Sappa1, Prof. Dr. Dr. Herbert Pöllmann2 and Prof. Dr. Wolfgang Krcmar1
¹University of Applied Sciences Nuremberg Georg Simon Ohm, Materials Technology Department, Nuremberg/Germany
2Institute of Geosciences and Geography, Mineralogy/Geochemistry Section, Martin-Luther-Universität Halle-Wittenberg, Halle (Saale)/Germany
