The terra mineralia exhibition is a central institution of the TU Bergakademie Freiberg. It is a scientific teaching collection that serves the education of students and research.

In 2004, Dr. Erika Pohl-Ströher transferred part of her private collection to the "Pohl-Ströher Mineral Foundation" and made it available to the TU Bergakademie Freiberg on permanent loan. This resulted in two exhibitions at the university: the terra mineralia in Freudenstein Castle and the Mineralogical Collection Germany in the Krügerhaus.