Luster is vitreous and silky to dull. Diaphaneity is transparent to translucent. Crystal Habits include sharp bladed crystals to 1.5cm forming divergent sprays.
Fracture is splintery.
Hardness is 3. Streak is yellowish-gray. Associated Minerals include aegirine, amphibole group, analcime, astrophyllite, calcite, cerite, fluorapatite, microcline, pectolite, pyrite, rhodochrosite and sphalerite.