Some recent finds have produced locally abundant specimens of larger size. It was originally described from the Francon quarry in Montreal 35 kilometers to the West, the only other locality for the species. It was originally found at MSH by Jean-Pierre Beckerrich.
Color is usually colorless, yellow.
Luster is vitreous. Diaphaneity is transparent. Crystal Habits include tabular crystals to 1.5mm and stacked micaceous plates. Hardness is not determined. Streak is white.