Mythril Chunks are tertiary materials obtained from the crafting of 7 Mythril Gems. They are the base materials for most of the Mythril Set. The Mythril Chunk is quite easy to obtain, requiring only 21 Mythril Fragments. However, there are many items made from Mythril Chunks that are quite resource intensive, such as Mythril Armor, which requires 26 Mythril Chunks in total, meaning that it can be very tedious to obtain.