Bane ore

Bane ore is an ore which can be obtained after completing the Ritual of the Mahjarrat quest. It can be mined out of the bane ore mine which is located on the ritual plateau. It requires 77 Mining and grants 90 XP per ore. It can be enchanted with the Tune Bane Ore spell (requires 87 Magic, 2 astral runes and 4 earth runes), which attunes it to a certain type of creature. After that it can be smelted, then smithed (which requires 77 Smithing and can only be done on the anvils on Kethsi), and then fletched into arrows (76 Fletching required) or bolts (80 Fletching required). Bolts made with the various bane ores made 50 at a time, rather than the usual 10.

The quickest way to access the bane ore mine is taking the Fairy Ring System. The code to access the bane ore mine is D - K - Q. This teleports you to a cavern filled with Glacors. Head northeast, through a barrier and you are now in the Bane Ore Mine.