Mithril Ore (block)

Mithril ore is a mineral block found underground. It's one of the rarer, and stronger mineral that can be used to craft tools and armor. Mithril ore requires a diamond pickaxe or better to mine, and it will drop two mithril ore items, which are smelted five at a time to get a  mithril ingot. Mithril ingots can be used to craft strong tools and armor.

Natural Occurrence
Mithril occurs from bedrock, up to layer 24. It's one of the rarest ores found in the overworld.