Zinc is a plentiful, naturally-generated block.
How to Obtain
This item can no longer be obtained into players inventory. When mined, it will drop into inventory as zinc ore rather than as the zinc-flecked earth block shown to the right. If lucky you may be able to find some one with it in there inventory and trade!
See zinc ore for more information on the uses of zinc as a resource.
If you have a zinc-flecked earth block in your inventory, you can place it or use it to trade with other players. Note that if you place this item, you will be unable to recover it into inventory as a zinc-flecked earth block. It will turn into zinc ore when you mine it.
During the testing phases of the various tutorial worlds, one of the chests of plenty was erroneously coded to drop this block (rather than zinc ore) into players inventory. The error was caught almost immediately, but some players ended up with the zinc-flecked earth blocks in their inventories. Today, these blocks are prized as rare, albeit rather useless, glitched game items.