The partners of Erz & Stein

Dr. rer. nat. Bernd Buschmann, born 1963
Diploma geologist Bergakademie Freiberg / Germany 1990
  • Economic geology
  • Metallogeny
  • Geochemistry of mineral resources
Member of SEG, IAGOD, Deutsche Gesellschaft f. Geowissenschaften.


Dr. rer. nat. Frank Haubrich, born 1964
Diploma mineralogist Bergakademie Freiberg / Germany 1993
  • Geochemistry
  • Stable isotope geochemistry
  • Soil science
Member of Deutsche Bodenkundliche Gesellschaft.


Dr. rer. nat. Michael Trinkler, born 1963
Diploma mineralogist Bergakademie Freiberg 1989
  • Applied mineralogy
  • Geochemistry of mineral resources
  • Spectroscopy of solids
Member of IAGOD, Deutsche Gesellschaft f. Geowissenschaften, Deutsche Gesellschaft f. Mineralogie.


The partners are guest lecturers at the Technical University Bergakademie Freiberg and Technical University Dresden. They are involved in scientific research projects and mentoring of students.