魔礦 is a pre-困難模式 礦石. It is the 腐化 counterpart to the 猩紅's 猩紅礦, and will not appear naturally in Crimson worlds. It can be found very rarely in small veins 地下 in worlds that contain Corruption, however the only usable quantities come from Boss, namely 世界吞噬怪, and from the 克蘇魯之眼 in worlds naturally containing Corruption. Demonite Ore emits a faint blue glow when placed, similar to Crimtane Ore.
Like Crimtane Ore, the 鎬 power required to mine Demonite changes with location. Below ground level, a 金鎬 or better is needed, while above ground, any pickaxe will do. Alternatively, it can be destroyed by bombs.
- Demonite Ore does not spread the Corruption during 困難模式.
- The placed block texture of Demonite Ore seems to represent scales.
- Demonite Ore, and its counterpart 猩紅礦, can be mined extremely early-game with bombs, though because they are both very rare this is not a very viable method to gather any appreciable amount.
- Selling the bar rather than the ore yields an extra 8 per bar. The bar is the most profitable way to sell Demonite.
- Placed Demonite has a new texture.
- Now requires 3 Demonite instead of 4 Demonite to craft a bar.
- 1.2.3：Increased stack limit from 99 to 999.
- 1.1：Now gives off purple light on top of the sparkle effect.
- Now has a sparkle effect.
- Can now be found underground, in small veins.