Hello Bigbarra
Why not try Mortlake, Western Victoria. It's the "Olivine Capital" of Australia. I know nothing of olivine, but I had a group of fossikers staying in my park and apparently they did quite well.
Regards
Frank
G'day,
I thought I retired, but now own a caravan park. Bloody hard work, but never mind.
If you ever want to get some trapped gold from between crevices, you'll need a sucker pump.
Here are the free plans for building one from scratch in one afternoon...