Dr. Leimer taught Mineralogy, Petrology and Optical Mineralogy courses as well as introductory geoscience courses. Dr. Leimer retired from teaching in 2021 after 50 years of service. His research interests include clay mineralogy and x-ray diffraction analysis.

BS in geology, 1962, Missouri School of Mines and Metallurgy, Rolla, MO; PhD in Geology, 1969, University of Missouri, Columbia, MO