Block of Sulfur - Found in the desert biomes and drops Sulfur, Can be crafted in Sulfuric Acid
Sulfur - Can be crafted into Gunpowder
Sulfuric Acid - Can be crafted in Bone Meal and Throwable Sulfuric Acid
Silt - Found in ocean biomes and can be crafted into Stucco (Regular)
Stucco - The regular stucco can be crafted into Midnight colored, Jungle colored, Rock colored, and Bloody Stucco
Slate - Found in the Plains and Tundra biomes, Can be crafted into Slate Tiles
Slate Tiles - Can be crafted into Slate Tiled Slab and Wall
Geode - Drops a random ore (Coal, Iron, Lapis, Redstone, Gold, Diamond, Emerald)
Wood Cores - Used to craft Talismans
Forest Ores and Gems (Crystal, Jade, Onyx, Pink Diamond, Ruby) - Used to craft talismans
Sapphire Ore and Gem - No use currently
Shroomium - Used to craft Shroomium Pickaxes and Upgrade them
Shroomium Pickaxes - Fastest pickaxes, but with VERY low durability
Dragon Fragment - Used to craft Dragon's Edges
Compected Obsidian - Used to craft Dragon Fragments
Dragon's Edges - The most powerful weapon in the game, Grants the 'End of the Swords' achievement
Oliminium - Used to craft Oliminous Forge and Oliminous Encyclopedia Vol. II
For crafting recipes use JEI or for Oliminous Forge recipes use the Oliminous Encyclopedia Vol. I