Tellurium farming guide
Uranus — Ophelia (Survival)
The wiki also documents Tellurium coming from enemies in any "Submersible"-tagged tileset (Uranus’ Grineer Sealab is one), so this Survival’s ever-growing enemy density genuinely adds to the haul on top of its resource caches, unlike a pure container farm.
Boosters help: this spot relies on enemy drop tables.
Uranus — Assur (Dark Sector Survival, Steel Path)
The wiki states Steel Path’s higher enemy density and resource drop chance give "anecdotally around 4x" the Tellurium of a regular run on this Sealab tileset, so — unlike most Uranus resources — boosters and the Steel Path passive are worth stacking here.
Boosters help: this spot relies on enemy drop tables.
Early game
Ophelia on Uranus (Survival, Grineer Sealab) is the standard early Tellurium farm. Unlike most of Uranus’ other resources, Tellurium isn’t purely a container pickup: the wiki documents it also dropping from enemies encountered in any “Submersible”-tagged tileset, and Ophelia’s Sealab tileset is one of them. That means the longer the Survival runs and the more enemies your squad clears, the more Tellurium comes in on top of the mission’s resource caches.
Mid & late game
Assur (Dark Sector Survival, Steel Path) is the endgame upgrade on the same planet. The wiki states plainly that “Steel Path grants much higher enemy density and +100% resource drop chance,” and anecdotally reports around 4x the Tellurium drop rate compared to a regular run on Ophelia. Since part of Tellurium’s supply genuinely comes from enemy kills, this is one of the few Uranus resources where stacking a Resource Drop Chance Booster with the Steel Path passive is actually worth it.