While the 600 does not have a dedicated Gold mode like the 800 does, you should have no problem detecting gold in Park 2 or Field 2 detect modes using multi-frequency technology. Using multi-IQ will be much better than using single frequency detectors due to the excellent, pre-configured settings.
In short, yes you can find gold with the Equinox 600. It might not be your dedicated gold prospecting metal detector, but it will get you in the game.