Copper and gold most certainly go together. Take Burra SA for example - to the north east of the town there is a run of alluvial workings that are on a track-side verge, there was/is also a privately owned working goldmine, small scale. We did some work up there in the 70s when the copper mine was open and I clearly remember heading out to the alluvial gold bearing areas. Certain areas looked like prime gold bearing locations - they were in a national park and while the 70s was pretty flex with the rangers for panning and running early VLF detectors, I feel pretty sure that they would now be no go areas. The Flinders Ranges also looks very promising but I am led to believe, a no-go area. Look but don't touch. You would be better off, and probably not earn the wrath of the Parks people, by heading to the legal areas in the Adelaide Hills, or heading over to Victoria, your closest 'large scale' detectable goldfields.
As for looted out (flogged) - yes a lot of areas are. The new PI detectors are finding smaller gold, as are the new Garretts, Minelabs and Whites, running small coils on flogged ground. Where people are coming unstuck is too high expectations in that they park, detect close to their cars in known gold bearing areas, have no luck and get frustrated very quickly. The key is to get away from the 'easy' areas and pretty much walk into the more remote fields, auriferous gold bearing areas.
As for looted out (flogged) - yes a lot of areas are. The new PI detectors are finding smaller gold, as are the new Garretts, Minelabs and Whites, running small coils on flogged ground. Where people are coming unstuck is too high expectations in that they park, detect close to their cars in known gold bearing areas, have no luck and get frustrated very quickly. The key is to get away from the 'easy' areas and pretty much walk into the more remote fields, auriferous gold bearing areas.