Josef Zemann

Josef Zemann (May 25, 1923 – ) is an Austrian mineralogist and geologist.

Zemann was born in 1923 in Vienna and studied mineralogy at the University of Vienna where he received his PhD for work with Felix Machatschki in 1946. Zemann worked with Martin J. Buerger at the Massachusetts Institute of Technology in 1951 and 1952. He became director of the Institute of Mineralogy and Crystallography of the University of Göttingen. From 1967 until his retirement in 1989 he was head of the Institute of Mineralogy and Crystallography of the University of Vienna.

The mineral Zemannite Mg_0.5ZnFe3+[TeO₃]₃ • 4.5 H₂O was named after him in the 1960s.