From A Wiki in the Desert
Silt is rich, granular soil deposits. It spawns on the ground in piles of 10, generally near bodies of water, and is free for anybody to pick up.
- 5 silt plus 1 sand used in a Flimsy Brick Mould will make 6 Wet Firebricks.
- 10 silt plus 2 sand used in an Sturdy Brick Mould will make 12 Wet Firebricks.
- Can be used in a Brick Machine to make up to 900 Wet Firebricks depending on the upgrade level of the machine.