Color is usually colorless to pale pink, pale brown to reddish brown.
Luster is vitreous to pearly. Diaphaneity is transparent to opaque. Crystal Habits include globular grains and embedded rectangular crystal sections that are etched. Hardness is 2. Associated Minerals include cancrinite, eudialyte, kogarkoite, lovozerite, rasvumite, s randite, sodalite, terskite, tugtupite, ussingite, villiaumite and vuonnemite.