Troilite and Atacamite are essential resources for crafting Mangalloy Ingots in Subnautica 2, used to build Metal Farms and repair the Alien Power Plant [1, 2, 3].
Troilite appears in-game as mineralized clinkers but is listed as troilite in the player inventory [1, 3]. Deposits lie near greenish-yellow Metal Farm fields northeast of the Alien Ruins. Sources differ on exact distance: one cites roughly 520 meters east near Angel Comb, another about 870 meters northeast from the Alien Ruins [1, 3]. The troilite is found at a depth around 450 meters, requiring a depth module on the Tadpole submarine to access safely due to hazardous surroundings [1, 3].
Troilite is very rare and limited in quantity, making it critical not to process all pieces at once. Metal Farms demand at least one piece of metal initially inserted to start production, so keeping spares of troilite avoids a potential soft lock in progression [3].
Atacamite is found about 200 meters east-northeast from the Alien Ruins Research Base in shallower waters under 250 meters, near alien dwellings and quartz nodes [2]. It is vital not only for Mangalloy Ingots but also for repairing the Alien Power Plant, which requires about 10 ingots in total [2, 3].
Crafting one Mangalloy Ingot demands one piece each of titanium, atacamite, and a stack of troilite, with the process taking 30 seconds [1].
Players aiming to repair the Alien Power Plant or build more Metal Farms should prioritize securing both troilite and atacamite at their respective locations. The depth module for the Tadpole submarine enables access to the deeper troilite deposits. Careful resource management is advised to prevent progress stalls due to troilite scarcity.
