Palladium Ore

Palladium Ore is an orange-colored Hardmode ore which can replace Cobalt in a given world. It appears similar to Copper Ore but appears slightly more saturated.

Like other Hardmode ores, Palladium is generated upon destruction of a Demon Altar with a Pwnhammer, are immune to all types of explosions and requires Molten Pickaxe or higher to mine.

Trivia
In reality, palladium is an element that is chemically similar to platinum. Though elemental palladium is silvery-white in color, it forms several compounds with orange or red-brown color. It has a wide range of applications including jewelery and electronics, but its most common use is as a chemical catalyst.