A solid solution series exists when two or more elements can fill the same position within the structure of two or more minerals. Kottigite is the zinc rich member of the series and parasymplesite is the iron rich member. However, not all of them share elements within their structures. Color is greenish blue, greenish gray or green. Luster is vitreous.
Crystals are transparent to translucent.
Crystal System is monoclinic. Crystal Habits include tabular or acicular crystals, radiating fibrous and massive crusts. Cleavage is perfect. Fracture is uneven. Streak is white.