Editing Covellite (section)

== Structure ==
For a copper sulfide, covellite has a complicated lamellar structure, with alternating layers of CuS and Cu<sub>2</sub>S<sub>2</sub> with copper atoms of trigonal planar (uncommon) and tetrahedral coordination respectively.<ref name=":3" /> The layers are connected by S-S bonds (based on Van der Waals forces) known as S<sub>2</sub> dimers.<ref name=":3" /> The Cu<sub>2</sub>S<sub>2</sub> layers only has one l/3 bond along the c-axis (perpendicular to layers), thus only one bond in that direction to create a perfect cleavage {0001}.<ref name=":8" /> The conductivity is greater across layers due to the partially filled 3p orbitals, facilitating electron mobility.<ref name=":3" />