Bob-omb

 is a mining bomb used in the Crystal Hollows.

Obtaining
Bob-ombs are dropped from placing down all Crystals in Crystal Nucleus in Crystal Hollows, in stacks of 16. It has a 3.954% chance to be dropped for each roll in the treasure bundle.

Usage
Bob-ombs are consumable items. When one is used, it throws a block of TNT in the direction the player is facing. After a short time, it explodes, destroying blocks in an 8 block radius regardless of their required. 50% of the blocks destroyed will be mined, dropping their resources.

Trivia

 * They are a reference to Bob-ombs from the Mario franchise.
 * Auto Pick-up doesn't work on drops by this item.
 * Blocks in a protected area cannot be bombed.
 * Ores destroyed by a Bob-omb will no longer respawn, thus it is sometimes used for griefing.