Luster is vitreous. Crystals are transparent to translucent. Crystal System is orthorhombic Crystal Habits include the crusts of acicular to almost fibrous crystals. Also as botryoidal masses and compact crusts. Cleavage is absent.
Fracture is uneven.
Streak is green. Associated Minerals are limonite , malachite , beudantite , adamite , cuproadamite , olivenite and smithsonite . Best Field Indicators are crystal habit, color, associations and density.