It crystallizes in the monoclinic-prismatic crystal system. It occurs as transparent to translucent orange-brown aggregates of subparallel acicular crystals up to 10 mm in length, and as patches of yellow, fibrous crystals.
It crystallizes in the monoclinic-prismatic crystal system. It is observed as transparent to translucent orange-brown needle-like crystals up to 10 mm long and as patches of yellow, fibrous crystals.