Planet Crafter Uranium Locations: Caves, Ore Extractor and Uraninite

Planet Crafter uranium is found in caves on Prime, through Uraninite on Humble and later from the sky through meteor showers. For steady mining you need a T2 Ore Extractor, because according to the game database only the second and third tier extract this rare ore.

This guide shows which worlds have the resource at all, which machine mines it, how the Asteroid attraction rocket pays off and why you'll come up empty on Skeo if you don't bring any with you.

📍 Planet Crafter Uranium: Overview of All Worlds

The community-run database planetcrafter.th.gl reads the spawn points from the game files. It lists 137 fixed locations. It shows ore veins for the extractor only on Prime and Toxicity, and Uraninite veins on Humble instead. No fixed spawn point is listed for Selenea, Aqualis and Skeo.

"No" here means the database lists no fixed spawn point. Single pieces in crates and wrecks aren't ruled out, but they're no use as a source you can plan around. How the worlds connect is explained in the overview of the planets in The Planet Crafter.

☢️ Prime: Finding Planet Crafter Uranium in the Caves

On Prime, the resource doesn't lie out in the open. It's concentrated in caves. You can find early single pieces in crates and wrecks before that. That isn't enough to set up steady mining, though. For that you need the veins in the caves.

Players have been quoting the same coordinates for years: a cave entrance at around 586 / 35 / -669 and a second spot at around 1782 / 22 / 1940. A Steam thread describes the entrance almost identically at 588 / 35 / -672. These are community values, not numbers from Miju Games. The interactive map on planetcrafter.th.gl shows the points more precisely.

A practical tip from the same community: the extractor has to sit exactly on the vein. Players describe placing it as fiddly, because the machine often only fits in a few spots and still has to pick the right ore. Expect a few attempts before you wire the spot up with power lines.

⛏️ Which Ore Extractor Mines Planet Crafter Uranium

The Planet Crafter has three tiers of Ore Extractor. According to the game database, the game describes the second tier as "Extracts rarer ores from the ground" and the third as "Extracts ores from the ground depending on user selection".

According to the database, the T2 Ore Extractor costs 3× Osmium, 1× Super Alloy Rod and 2× Iridium Rod. That only this tier extracts the rare ore shows in the database: as a source of Uranium it lists only the T2 and T3 Ore Extractor. Steam threads and older community guides report the same. Our Osmium guide covers the Osmium you need for it.

A second stumbling block from the Steam discussions: if there isn't enough power, the extractor only shows Iron according to player reports, even though it's placed correctly. So check your power supply first before you give up on the spot. Background on that is in the guide to endgame energy.

☄️ Meteor Showers: The Asteroid Attraction Rocket

The second big source comes from above. The Asteroid attraction rocket's in-game description reads "Attracts uranium asteroids. Gives a GLOBAL heat generation bonus". It's built at the Launch Platform and gives a permanent heat bonus of 1000 percent.

The math behind it: each rocket uses two units of the very ore it then pulls from the sky, through its engine. Miju Games doesn't say how much a shower drops. Community reports talk about clearly more than you put in, but there's no confirmed number. So always keep two units back for the next engine.

Don't launch two rockets right after each other. Collect the chunks from the last shower first, otherwise you quickly lose track with several impact sites.

🌋 Humble: Uraninite Instead of an Ore Vein

Humble has no classic vein for the extractor. Instead, the database lists 101 locations for Uraninite, plus Uraninite veins that the T2 and T3 Ore Extractor can mine. The in-game description reads: "Insert this in an ore breaker to extract rare ores". The database links Super Alloy, Iridium, the ore you're after, Iron and Dolomite to Uraninite.

Humble itself unlocks the first Ore Crusher, the T2 Ore Crusher follows at 25 kTi and the T3 Ore Crusher at 1 MTi. Building the T3 itself takes one Uraninite. The database doesn't say which tier processes the ore best.

Steam players describe the vein locations differently: at the big lake in the extinct volcano in the west, in ice caves near the landing pod and in the northeast near the giant robots. These are community values, so check them on the interactive map before you build there.

🗺️ How the Map Helps You Find Planet Crafter Uranium

The interactive map on planetcrafter.th.gl is the best tool for finding spawn points in The Planet Crafter. Pick the world at the top, filter for the ore you're looking for and mark collected points as done. That way you see at a glance which cave you've already cleared.

Two things to know. First, the map only shows fixed spawn points, not loot in crates. Second, players report that rare ground spawns like Zeolite don't respawn after mining, so don't count on it here either. If you want a permanent supply, there's no way around the extractor or the rocket.

🧪 Toxicity, Selenea, Aqualis and Skeo

On Toxicity you can find the ore much like on Prime: ground spawns plus at least one ore vein for the extractor. On Selenea, Aqualis and the new moon Skeo, however, the database lists not a single fixed spawn point. That also applies to Skeo after the update to version 2.102. Osmium was switched to the Ore Extractor there, but nothing changed for the nuclear fuel.

In practice: if you fly to a moon, bring finished Uranium Rods, not loose ore. Nine units are condensed into one rod, which takes up much less inventory space. What survives the flight is covered in the Skeo inventory guide.

📦 What You Need Planet Crafter Uranium For

The rod is the biggest consumer: each one costs nine units of ore, and a single T2 Nuclear Reactor needs three rods, so 27 units. Which other recipes need rods is in the Uranium Rod guide. On top of that come two units per Rocket Engine.

The rods are building material, not fuel: a finished reactor runs without resupply. According to the database, the T1 costs one rod and delivers 86.5 kW, the T2 costs three rods and delivers 331.5 kW. So per rod, the T2 gives a bit more power. The road into the late game is covered in the endgame guide.

💡 Common Mistakes When Mining

• Standing in the cave with the first Ore Extractor and waiting for rare ores.
• Placing the extractor next to the vein instead of exactly on it.
• Giving up on a spot during a power shortage when only energy is missing.
• Putting your whole stock into reactors and keeping no ore for the next Rocket Engine.
• Heading to Skeo, Selenea or Aqualis without a supply.

❓ FAQ about Planet Crafter Uranium

Where can I find uranium in Planet Crafter?

In caves on Prime, as ground spawns on Prime, Humble and Toxicity, and through meteor showers from the Asteroid attraction rocket. On Humble, the supply mostly comes through Uraninite and the Ore Crusher.

Which Ore Extractor mines the ore?

According to the game database, the T2 Ore Extractor is the first, unlocked at 364.5 mPa pressure. The T3 lets you select the ore directly.

Why does my extractor only show Iron?

Either it isn't placed exactly on the vein, or there isn't enough power. Players report that the display jumps to Iron during a power shortage.

Can I find Planet Crafter uranium on Skeo?

The community database lists no fixed spawn point on Skeo. Bring finished Uranium Rods with you.

Is the Asteroid attraction rocket worth it?

Yes, if you want to push heat anyway. It costs two units of ore through its engine and gives you a shower plus a 1000 percent heat bonus in return. The exact yield isn't officially stated.

Can I craft the ore instead of finding it?

Not directly. The only detour is crushing Uraninite on Humble. Everything else is mining, loot or meteors.

Checked against version 2.103 (Skeo Moon Patch #1) as of October 2026. Recipes, unlock values, in-game descriptions and spawn counts come from the community-run database planetcrafter.th.gl, which reads the client names from the game files, compared against Miju Games' patch notes on Steam. Coordinates, locations on Humble and the behavior during power shortages are community information from Steam discussions and not officially confirmed.