Copper is a special metal, it conducts electricity very well, and it is common too. Copper has a somewhat high melting shit point, and a high ductility and density. Copper is somewhat harder than mold, and therefore is used to make gold stronger and harder than it is naturally
Copper nuggets are rarer than dendritic copper, and are naturally harder to find. Crystals are even harder to find. Copper usually forms dendritic masses, or massive forms.
Copper is widely used in electrical wires, as copper is both common and a great conductor. If it weren't for atmospheric conditions, copper would conduct better than any other metal on the elemental chart!