How to Get Cobalt in Terraria — Mining Guide
How to Get Cobalt in Terraria — Mining Guide
⚡ QUICK ANSWER
Cobalt Ore appears underground after smashing the 1st Demon or Crimson Altar with the Pwnhammer (Wall of Flesh drop). Mine it with a Gold or Platinum Pickaxe or better. Smelt 3 Cobalt Ore into 1 Cobalt Bar at any Furnace. Most importantly, craft the Cobalt Pickaxe — required to mine Tier 2 Hardmode ores (Mythril/Orichalcum).
| Detail | Info |
|---|---|
| Unlock Method | Smash the 1st Demon/Crimson Altar with the Pwnhammer (Wall of Flesh drop) |
| Ore Appearance | Bright blue ore found in Underground and Cavern layers in Hardmode |
| Min Pickaxe | Gold or Platinum Pickaxe (65% power) — minimum needed to mine Cobalt |
| Smelting | 3 Cobalt Ore = 1 Cobalt Bar at any Furnace |
| Counterpart | Palladium Ore — generates instead of Cobalt in ~50% of worlds |
| Most Important Craft | Cobalt Pickaxe (12 Cobalt Bars) — required to mine Mythril/Orichalcum |
How to Get Cobalt in Terraria — Step by Step
Defeat the Wall of Flesh and obtain the Pwnhammer
Cobalt only spawns in Hardmode. Defeat the Wall of Flesh in the Underworld using a Guide Voodoo Doll as a summon item. It drops the Pwnhammer — the only tool capable of smashing Demon or Crimson Altars to generate Hardmode ore veins.
🔥 Wall of Flesh must be defeated first — drops the Pwnhammer needed for Altar smashingSmash the 1st Demon or Crimson Altar
Find a Demon Altar (Corruption, purple glowing) or Crimson Altar (Crimson, red glowing) in your world and hit it with the Pwnhammer. The 1st Altar smash generates a vein of Cobalt or Palladium somewhere underground. Whether you get Cobalt or Palladium depends on your world seed — roughly 50/50.
🔨 1st Altar smash = Cobalt (or Palladium) appears underground — one smash is enough to startVerify you have a Gold or Platinum Pickaxe
Cobalt Ore requires a pickaxe with at least 65% power to mine. The Gold Pickaxe (9 Gold Bars) and Platinum Pickaxe (9 Platinum Bars) both meet this threshold. Pre-Hardmode Iron/Lead Pickaxes cannot mine Cobalt — upgrade to Gold/Platinum before heading underground if needed.
⛏️ Gold/Platinum Pickaxe minimum — Iron Pickaxe cannot mine Cobalt OreExplore the Underground and Cavern layers with Spelunker Potion
Cobalt Ore generates as bright blue veins in cave walls and floors. The deepest layers (Cavern and below) have the highest concentration. Brew a Spelunker Potion (Bottled Water + Blinkroot + Gold/Platinum Ore + Moonglow) and explore — it highlights all nearby ore with a golden glow, making Cobalt very easy to spot.
🌟 Spelunker Potion highlights Cobalt in gold — brew before any Hardmode mining runSmelt Cobalt Bars and craft the Cobalt Pickaxe immediately
3 Cobalt Ore smelts into 1 Cobalt Bar at any Furnace. The single most important first craft is the Cobalt Pickaxe (12 Cobalt Bars at Iron Anvil) — it has higher pickaxe power than Gold/Platinum and, crucially, can mine Tier 2 Hardmode ores (Mythril/Orichalcum) generated by your 2nd Altar smash.
🔨 Cobalt Pickaxe (12 bars) = top priority first craft — unlocks Mythril/Orichalcum miningSmash the 2nd Altar and upgrade mining tool
After crafting the Cobalt Pickaxe, smash the 2nd Altar to generate Mythril or Orichalcum ore. Your new Cobalt Pickaxe can now mine it. Continue progressing: 3rd Altar smash → Adamantite/Titanium → upgrade pickaxe at each tier. Cobalt is the first step in the Hardmode ore progression chain.
📈 2nd Altar → Mythril/Orichalcum; use Cobalt Pickaxe to mine it — keep upgradingPro Tips
Smashing each Altar also permanently corrupts a random surface tile, spreading Corruption/Crimson slightly. Smash Altars away from your base and vital biomes to minimize surface damage.
Whether your world generates Cobalt or Palladium is fixed at world creation. Both are Tier 1 Hardmode ores — Palladium Ore is the functional equivalent with slightly different stats on tools and armor.
Beyond the Cobalt Pickaxe, Cobalt Bars craft Cobalt Armor (strong early Hardmode set), Cobalt Drill (faster mining, same pickaxe power as Cobalt Pickaxe), and Cobalt Chainsaw.
The Cobalt Shield (found in Dungeon Gold Chests, not from Cobalt Ore) is a completely different and very useful accessory — do not confuse it with crafted Cobalt items.
Ore veins from multiple Altar smashes coexist underground simultaneously. A single Spelunker Potion mining session can yield Cobalt, Mythril, and Adamantite from the same cave run.
Cobalt is the first Hardmode ore players access and the gateway to the entire Hardmode crafting progression chain. The Cobalt Pickaxe — requiring only 12 bars — is the critical first craft that unlocks Tier 2 ore mining. Prioritize collecting 12 bars and building the pickaxe before anything else, then smash the 2nd Altar to continue the upgrade path.
Frequently Asked Questions
How do I unlock Cobalt Ore in Terraria?
Smash the 1st Demon or Crimson Altar in your world using the Pwnhammer dropped by the Wall of Flesh. The smash generates a Cobalt or Palladium vein underground. Whether you get Cobalt or Palladium is world-seed dependent.
What pickaxe mines Cobalt Ore in Terraria?
You need a Gold Pickaxe, Platinum Pickaxe, or any pickaxe with 65%+ power. Iron and Lead Pickaxes cannot mine Cobalt. Craft a Gold Pickaxe from 9 Gold Bars if you haven’t already.
What is Cobalt used for in Terraria?
Most important use: Cobalt Pickaxe (12 bars) — required to mine Tier 2 Hardmode ores. Also used for Cobalt Armor, Cobalt Drill, Cobalt Chainsaw, Cobalt Repeater, and the Cobalt Hat/Helmet/Mask.
What is the difference between Cobalt and Palladium in Terraria?
Cobalt and Palladium are world counterparts — each world generates one or the other (not both). They are equivalent Tier 1 Hardmode ores with slightly different tool and armor stats. Both unlock Tier 2 ore mining when crafted into pickaxes.