Troilite is a crucial resource in Subnautica 2, used primarily to craft mangalloy ingots and establish a metal farm. Here's where to find it.
Crystal Caves
The most reliable source of troilite is the Crystal Caves biome. Look for small, dark crystal formations on the cave walls and floor. Use a Prawn Suit with a drill arm to extract large deposits. Smaller chunks can be picked up by hand.
Deep Purple Vents
Another location is the Deep Purple Vents biome. Troilite appears as scattered nodules near thermal vents. Be cautious of high temperatures and aggressive fauna.
Mangalloy Ingot Crafting
Once you have enough troilite, combine it with manganese ore in a fabricator to create mangalloy ingots. These are essential for advanced base components and vehicle upgrades.
Metal Farm
To set up a metal farm, use a large room with growbeds. Plant troilite crystals (if discovered) or use a resource harvester in areas with high troilite density. This ensures a steady supply for crafting.
Troilite deposits respawn over time, so mark locations with beacons for easy returns.