Color is usually colorless to very pale pink. Luster is vitreous. Diaphaneity is transparent. Crystal Habits include rough hexagonal crystals, and etched barrel- shaped prisms to 5mm. Cleavage is not observed.
Fracture is splintery to conchoidal.
Hardness is 5. Streak is white. Associated Minerals include aegirine, apophyllite series and pectolite.