An astounding 99.9% of the entire volume of our planet’s crust is made up of less than a 100 of the 5,500-plus unique mineral species known to form on Earth. The take-home message: on Earth, mineral diversity is oddly rare! However, diversity is observed at an explosive scale at a handful of specific localities. Situated on Mont Saint-Hilaire about 40 km east of Montreal, the Poudrette (Demix) quarry is one such location. In an area less than 1 km2, an incredible 439 mineral species—25% of all known in Canada—can be found. Of these 439 species, 71 were first discovered here.
The reason behind this remarkable diversity is compositional complexity of the alkaline rocks that characterize Mont Saint-Hilaire. Here, mineral species containing more than 40 different chemical elements have been found. Many of these constituent elements—lithium (Li), beryllium (Be), zirconium (Zr), niobium (Nb) and the rare earth elements (REE) among others—are themselves rare in the Earth’s crust. Even after decades of scientific study, many of the geological processes responsible for the creation of Mont Saint-Hilaire over 115 million years ago remain a mystery.
In October 2020, the Canadian Museum of Nature proudly announced the acquisition of the Gilles Haineault – Mont Saint-Hilaire Collection. Undoubtedly, this is the most comprehensive collection of Mont Saint-Hilaire material in existence.
For over 30 years, G. Haineault was given unprecedented access to freshly exposed quarry material. His incredible skill, patience and dedication have resulted in a collection totaling over 8,000 pieces.
At the Museum, many of these newly acquired specimens will serve as crucial research tools, helping us to better understand the geochemical complexity that makes our Earth such a unique planet in the solar system.
Many specimens in this Collection are also of unparalleled physical beauty, exhibiting incredible optical qualities (colour and clarity), atomically perfect crystal shapes and forms, and exemplary crystal size. Recently, 1,160 of the top specimens were acknowledged by the Canadian Cultural Property Export Review Board (CCPERB) as veritable Canadian treasures, taking their rightful place alongside objects like Group of Seven masterpieces and Glenn Gould’s infamous Steinway. Integral to Canada’s
cultural identity, they are protected from sale or export and will remain discoverable to future generations of researchers and enthusiasts alike.
The minerals of Mont Saint-Hilaire – Unique. Diverse. Canadian.