Mu50Stang
Sounds just like a spot I hit last year, lots of lead but no gold. My thought on this is the river I was in has a lot of fines and small flakes that don't travel down the river the same as heavy nugget gold. After doing some more testing the gold was around the corner and up the bank higher. More of a flood gold type thing, if there was any bigger gold I believe I wood have hit the motherload but not one flake from the spot where all the lead came from.
I think it comes down to the size of the gold and how heavy it is.
Just my thought on that...