Langsdon Mineral Collection
(Mercer County Library) 303 N Main St.
Celina, OH 45822
Rock hounds take note of this fabulous gem and mineral collection on display to the public. The Mercer County District Library in Celina exhibits the collection consisting of 661 samples from all over the world. The specimens are housed in 12 custom built cabinets located in the center of the library. The collection was donated to the library by Ron and Ruth Langsdon on the basis that it be continually displayed to the public. Each sample is labeled with the mineral type and place of origin. Examples of minerals displayed are: apophyllite, stibnite, pyrite, galena, and purple amethyst. Displayed in brightly lit cases, the minerals sparkle and gleam with a life of their own. The library offers classes and group tours by prior arrangement with Professor Ken Strickland who is the curator of the collection. The library is open six days a week with a variation in hours from summer to winter. Call ahead for library hours of service or to request a program or tour.