Luster is vitreous or silky to dull. Crystals are transparent to translucent. Crystal System is hexagonal. Crystal Habits include radiating clusters, tufts or spherules of acicular or fibrous crystals, also massive, capillary and earthy. Cleavage not noticeable.
Fracture is fibrous.
Hardness is 3 - 4. Streak is light green. Associated Minerals are pharmacosiderite , zeunerite , emplectite , limonite , malachite , wulfenite , mimetite and barite . Best Field Indicators are color, crystal habit, density and associations with bismuth ores.