In Terraria, mining Mythril ore requires a pickaxe with at least 110 pickaxe power. This means you need a Cobalt Pickaxe, Palladium Pickaxe, or any stronger option (like drills). These tools let you harvest Mythril ore found in the Cavern layer during Hardmode.

Minimum Pickaxes

Here's a quick breakdown of the entry-level pickaxes that work:

Pickaxe/Drill| Pickaxe Power| How to Obtain
---|---|---
Cobalt Pickaxe| 110| Crafted from 20 Cobalt Bars at a Mythril/Orichalcum Anvil 3
Palladium Pickaxe| 110| Crafted from 18 Palladium Bars at a Mythril/Orichalcum Anvil 47
Any Drill (e.g., Cobalt Drill)| 110+| Post-Mech Boss drops or crafting 1

Stronger ones like Mythril Pickaxe (140 power) come after mining the ore itself—you craft it from Mythril Bars.

Step-by-Step Mining Guide

  1. Enter Hardmode : Defeat the Wall of Flesh to spawn Mythril ore underground.
  2. Smash Altars : Destroy 2-3 Demon/Crimson Altars with a Pwnhammer (from Skeletron Prime/Prime Destroyer) to generate ore veins—about 2/3 chance for Mythril.
  1. Gear Up : Use your Cobalt/Palladium pickaxe (mined earlier with Hellstone tools).
  1. Locate Ore : Dive into Caverns or open Hardmode Crates while fishing.
  1. Mine Safely : Bring buffs like Spelunker Potion; watch for enemies.

TL;DR : Cobalt or Palladium Pickaxe (power 110+) is your ticket—nothing weaker cuts it.

"Can't mine mythril with a palladium pickaxe? Double-check your tool power!" – Forum chatter

Note : Details from public game wikis and forums like Terraria Fandom and Reddit. Information gathered from public forums or data available on the internet and portrayed here.