Specimens Ktenasite is a rare mineral from the classic mineral site at Laurium , Attiki, Greece. Ktenasite is a colorful mineral. It is often associated with other colorful minerals such as serpierite , glaucocerinite and smithsonite . Ktenasite forms crusts of lovely blue-green aggregates and tiny crystal rosettes adorning other minerals. Ktenasite forms as the result of the oxidation of copper and zinc sulfide minerals.
Color is blue-green to green.
Luster is vitreous. Specimens are translucent to transparent. Crystal System is monoclinic. Crystal Habits include small tabular crystals that can form rosettes and encrusting masses. Cleavage is poor but discernible.