Color ranges from orange to orange-red. Luster is vitreous. Diaphaneity is transparent to translucent. Crystal Habits include pseudo-octahedral crystals to 0.5mm. Cleavage is not present.
Fracture is uneven.
Hardness is 5 - 6. Streak is white. Associated Minerals include analcime, annite, natrolite, pyrite and titanite.