The Mercer County District Library has one of the largest mineral collections in the state of Ohio. This collection was donated by Ron and Ruth Langsdon of St. Marys in 2006 and contains some of the best quality specimens in the world.
We offer free educational and fun presentations to schools of all grades and other groups such homeschoolers and scout groups.
Options include a program on minerals or fossils which we can adapt to any grade level and standard. We can bring minerals and fossils to your classroom for the students to examine or we offer an in-house program at our library where the students can view our extensive collection.
The program time is flexible within a range of 45-90 minutes. We are now scheduling presentations for 2026. Please contact minerals@mercerlibrary.org to schedule a date that works for you.
School Visits