Example – Spertiniite, Cu(OH)2
It was named for mine geologist Francesco Spertini (born 1937), Chief Geologist, Jeffrey mine, Asbestos, Canada, who submitted the first sample.
Structure of copper(II) hydroxide, Cu(OH)2
Oswald H R, Reller A, Schmalle H W, Dubler E
Acta Crystallographica, Section C , 46 (1990) p.2279-2284
Layers of distorted CuO6 octahedra, connected via H-bonds.