Fractite ore

Fractite ore is a Tier 5 ore that can only be obtained while dungeoneering. It can either be bought from the Smuggler, received as a monster drop or mined from a Fractite rock, requiring level 40 Mining. This is the highest tier of ore available to free players.

Mining fractite grants 71 Mining experience for each ore mined. A player may receive between 2 and 5 ores from each fractite rock, after which it is depleted and no further ore can be mined. Players can smelt fractite ore into a fractite bar through the Smithing skill by using it on a furnace, granting 32.2 Smithing experience.

Special Notes
The fractite rock has the potential to give the most mining experience available from a single rock on free play, at 355 experience (if it yields all 5 ores). However, mining fractite is not recommended as a method for power-training the Mining skill, as they are only located sparsely throughout the Daemonheim dungeons, and there is no guarantee that a single dungeon will contain even one fractite rock.