10-15 Arcanite per Hour (Gold eq2)
This requires a two man team. A Hunter (with a cat) and a Rogue.
You have a rouge stealth to the first vein in ZG. Normally before the bats that explode. Then have your hunter send in his cat stealthed to the rich hakkarian vein and jump out of prowl and aggro all the mobs. the rogue with 300 mining has about a 10 sec window to mine the vein while the mobs guarding the vein are chasing the hunters cat. Run out rinse and repeat.
It takes alot of pratice you can get the runs down to under 5 min and also loot the voodoo dolls. Souldrait also drops which can go for 50g each.