Missouri S&T's department of geosciences and geological and petroleum engineering is home to the Mineral Museum. Many of the minerals housed in the museum date back to the 1904 World's Fair when a portion of the minerals on display at the fair were sent to the Missouri School of Mines and Metallurgy (now Missouri S&T). Over a century later, the collection has grown to over 4,599 minerals from over 92 countries. The mineral collection is open daily during regular business hours (Mon-Fri, 8 a.m. - 4:00 p.m.). Visitors are always welcome and special tours can be arranged upon request by emailing rocks@mst.edu.