Silt Blocks are soils very similar to Sand Blocks that appear at cavern layer. It is subject to gravity and will deal damage to any player or mob they fall on. Unlike sand, It is immune to the Hallow, the Crimson, and the Corruption. It looks similar to Ash Blocks, but is a lighter color.
Silt can be placed on an Extractinator to spawn various valuable materials, including gems, coins, ores, and the Amber Mosquito pet summoning item.
- When the Wall of Flesh is defeated for the first time, and the "Spirits of Light and Darkness" are unleashed, Silt Blocks inside the new Corruption, Crimson, and Hallow biomes will be converted to Ebonsand/Crimsand and Pearlsand respectively, much like regular sand. After this initial conversion however, Silt Blocks are not affected by the spread of Corruption and Hallow.
- Silt can be used in the same way as Sand to fill lava pits. It can also be used in creating traps, since it causes damage to whatever it falls onto.
- 1.2: Stack limit increased from 250 to 999. Also can now be used in Stucco blocks and turned into "something more useful" via the Extractinator.
- 1.1: Introduced.