Shadow Rock

Shadow Rock is a block that can only be found on Shadow Moon biomes.

Besides Elder Stone, it is the only reliable source of Raw Nocxium. Depending on the situation, producing it can be slightly more efficient and easier than production of the Elder Stone, because you are only need 1 crystal and 30 Essentia Obscura (which can be obtained using Infinite mixing on Atropus Sea planets) for 30 Shadow Rocks.