Most of McGill's approximately 17,000 non-Canadian archaeological and ethnological artifacts were consolidated at Redpath in the 1970s. 4091 - The Mineral Collection contains approximately 16,000 specimens including material from the turn of the century, an important period of mineral collecting. Specimens from around the world can be found on display. Recent acquisitions to the collection have included phosphates from the Yukon, minerals from Mont St-Hilaire and the Francon Quarry in Montreal. At both the last two sites rare minerals have been found, including Weloganite, Dresserite, Donnayite and Hilairite, some of which are known only from a few localities.
Donations continue from collectors and duplicate material is available for trade.
The Rock Collection, consists of some 400-500 specimens.