Hey Yankeevicjim...
Klondike here..
If you have smaller gold above you and larger gold below you.. somewhee inbetween is a deposit from one of several sources...such as an erroding vein...or a secondary channel from long ago geological times, or from glacial remains ...or with the smaller gold...a possible end dump of a long tom from gold rush days...to name a few ....
If the gold you are finding up stream is flat, well worn,,, it is some distance from from the source... if the gold from below your claim has sharp edges, it hasn't moved very far from its source...
How the old times found the great lode mines was to follow the gold up river until they ran out of gold...they back track..focusing on the larger gold until they identified the source or sources...
The larger the gold and more course the gold.... the less it has traveled from the source compared to the smaller flake gold which will have moved much further from the source..
Good luck... keep going for it...
Klondike...