Stalactite is a natural cubic block that can be found in large amounts on the Stalactite layer underground.
On blocks of Stalactite Warmworms and green Mirus can spawn in complete darkness. The same goes for any structures and artificial biomes made from blocks of Stalactite.
Underneath Stalactite blocks, there is a chance of water drops falling, although it it's just decoration
To mine this block you will need to equip an Obsidian Mining Cell or better.
Blocks of Stalactite can be placed just like they are and can also be used for crafting Healing Beacons, Corruption Resistance Potions, Purification Bombs, Siltstone Walls and Mosaic Moroccan Walls.