Color is usually pale brown, beige or gray. Luster is vitreous to greasy. Diaphaneity is transparent to translucent. Crystal Habits include botyroidal aggregates of tabular hexagonal crystals to 3mm and flat tabular crystals to 5mm.
Fracture is conchoidal to uneven.
Hardness is 5. Streak is white. Associated Minerals include aegirine, catapleiite and microcline.