It, mistakingly, carried the name of ekanite until 1982, when the mineral was redefined and renamed. Color ranges from dark gray, grayish brown, off-white, beige and pale brown to dark brown. Luster is vitreous to greasy or dull. Diaphaneity is translucent to opaque. Cleavage none observed.
Fracture is irregular.
Hardness is 5. Streak is white. Associated Minerals include aegirine, albite, analcime, calcite, epididymite, eudialyte, fluorite, microcline, monteregianite, natrolite, nenadkevichite, polylithionite, raite and yofortierite.