Color is usually brown, orange-yellow or reddish brown. Luster is vitreous to adamantine. Diaphaneity is transparent to translucent. Crystal Habits include sharp octahedral crystals to 1mm sprinkled on various minerals, very rarely as rosettes, irregular grains and embedded granular masses.
Fracture is subconchoidal to uneven.
Streak is light brown. Associated Minerals include aegirine, albite, amphibole group, analcime, ancylite, astrophyllite, biotite, calcite, catapleiite, chlorite group, elpidite, epididymite, fluorite, genthelvite, leucophanite, microcline, natrolite, polylithionite, rhodochrosite, rutile, s randite and wurtzite.