Runite ore

Runite ores can be found in the Dwarven mines and at the Fremennik isles. They require level 85 Mining to be mined. They grant 892 experience per ore.

An Runite ore can be melted into an Rune bar in a Furnace, using 1 Runite ore and 4 Coal ores. You can also use the spell Superheat on a Runite ore to get an Rune bar, but you still need to have atleast 4 Coal ores, 4 fire runes and 1 nature runes in your inventory to use spell. Using this spell will grant 200 Smithing xp and 692 Magic xp Rune bars are further refined in the Smithing skill. They will grant 560 smithing xp when you smith a bar into an other item. When you smith 3 bars into 1 item you will grant 3 x 560 xp.