but if you go on a field trip and pay $10 like I did your guaranteed to find them all there's a guy there that runs field trips every Wednesday I think at one of the churches at Glen Innes his name is john he meets anyone at saint johns church at I think 10am well worth the $10 dig in the creek...
I once had a whole jar of small sapphires and zircons and garnets from there and sadly my friend took the lid off the jar and tipped them all into a bucket with quartz peace's I was going to crush and he didn't let me know they wore in there and I ended up crushing them all it took about a week...
mate your onto the gold once you find that stuff your onto the gold its chlorided quartz. or quartz with chloride mineral in it I would be sinking a shaft right on top of it or driving a tunnel in maybe tunnelling as its easer to do ;)