Some of the largest and perhaps the best specimens for the species have been found at Mont Saint-Hilaire. Color is usually colorless on smaller crystals and white or gray on the larger crystals. Luster is vitreous. Diaphaneity is transparent on smaller crystals and translucent to opaque on larger crystals. Crystal System is isometric with several space groups.
Fracture is subconchoidal.
Hardness is 5 - 5.5. Streak is white. Associated Minerals include a wide variety of associated minerals due to its widespread occurrence.