So here I am, managing my shop, right? Just got some Zinc with my new Iron Pickaxe... Some dude comes in and asks me for "A Zinc One Hand Sword"

At first I go and smelt some Zinc, duh... But wait, it doesn't form into Ingots like Iron, Copper, Adelite, Tin, or any ore other than Carbon Ore.
In fact, it acts like Carbon Ore, just *Poof* gone!

So how do I make a Zinc Ingot?